sox-users Mailing List for SoX - Sound eXchange

Chris,

I just read the very last paragraph of your reply again. Are you saying 
that even the "lame_enc.dll" won't work (I had not validated it yet)? 
And that the windows sox.exe does not recognize ANY external libraries? 
If that is the case, then the main page might want to change the comment 
indicating that "(with optional external library)" to "(with optional 
external library on non-windows systems)", or something similar.


Jim



Jim O'Flaherty wrote:
> Chris,
>
> Thank you very much for your reply.
>
> I like your clever idea of attempting to round out each of the small 
> files to equal exactly 8 seconds. However, due to the nature of my 
> application, it will only work sporadically. Some of the files are 
> longer than 8 seconds and must overlap (mix) with the next one. A 
> such, I am trying to get to a uniform way to handle all the files. 
> Making special logic for files under 8 seconds and other logic for 
> those over 8 seconds is quite a bit more work. I will do that if it 
> comes down to it is the only way to solve the problem without 
> exploding files sizes on my HD.
>
> I am confused why the phrase "(with optional external library)" is 
> used on this page (http://sox.sourceforge.net/) when listing FLAC 
> (first list, right column, 8th item down). It's making it appear 
> similar to how I got MP3s working, by placing the "lame_enc.dll" in 
> the same folder as the "sox.exe". Is there a "flac_enc.dll" that's 
> equivalent?
>
> As to the speed increase using FLAC - the very slowest operation on my 
> computer is I/O. So, I am willing to use lots of processor time to do 
> lossless compression and then write out a much smaller file (way 
> smaller than the 10s of MB that the files begin to be towards the end 
> of my 20 minutes). As such, I figured that FLAC would maximize 
> throughput on my primary constraint, I/O. Once I get FLAC (or some 
> other lossless compression format) working, I will let you know what I 
> experience in terms of performance gain. It might be as you say, not much.
>
> I would rather not use Cygwin at this point. I have already invested a 
> number of hours in the current design. If I have to, I will. I sure 
> hope that adding FLAC is as simple as adding MP3 support was, just 
> adding a .dll to the sox.exe folder.
>
>
> Thank you,
>
> Jim
>
>
> Chris Bagwell wrote:
>> Jim O'Flaherty wrote:
>>   
>>> So some questions:
>>>   A) Is taking each of the 140 files and prepending it with (n * 8 
>>> seconds of) silence (using the "pad" option) and then mixing the 140 
>>> tracks together the proper way to approach generating the desired output 
>>> of 140 small samples each playing at an 8 second interval? And what 
>>> other options in SOX might there be to achieving this same effect?
>>>   
>>>     
>> Sounds like your on the right track.  I have a small suggestion that 
>> will save some disk space.  If the majority are less then 8 seconds then 
>> use the soxi to find the exact length, do some script math to find how 
>> much to pad it out to 8 seconds and use pad to do that  Then use the 
>> --combine concatenate option on sox to concat as many exact 8 second 
>> files as possible together into a single file.  If they were all less 
>> then 8 seconds then you'd be able to do that with out the megs of 
>> padding at beginning.
>>
>> Since I think you said they are not all 8 seconds, at least concat'ing 
>> all that you can into bigger files first will reduce the number 
>> intermediate files you need to concat with megs of silenece.
>>   
>>>   B) How much will FLAC speed up the processing? Using .wav as my 
>>> output, saving tracks with 320 second of silence was taking 10s of 
>>> seconds due to the file being 10s of MB large.
>>>   
>>>     
>> I'm not sure that using FLAC will help with anything except disk space.
>>   
>>>   C) Where can I go to find out what to dl and where to place it 
>>> regarding the FLAC library so that SOX can use it?
>>>
>>>
>>>   
>>>     
>> Your using windows, right?   The cygwin version of sox on download page 
>> contains FLAC support so you may give it a try.  It may have a file 
>> pathname issues in your script since cygwin emulates POSIX environment.
>>
>> SoX under windows doesn't support dynamic detecting of DLL's so not much 
>> you could do expect recompile using mingw or VC++ to add in FLAC 
>> support.  Thats not been done as far as I know before.
>>
>> Chris
>>
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>>   
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>   

Chris,

Thank you very much for your reply.

I like your clever idea of attempting to round out each of the small 
files to equal exactly 8 seconds. However, due to the nature of my 
application, it will only work sporadically. Some of the files are 
longer than 8 seconds and must overlap (mix) with the next one. A such, 
I am trying to get to a uniform way to handle all the files. Making 
special logic for files under 8 seconds and other logic for those over 8 
seconds is quite a bit more work. I will do that if it comes down to it 
is the only way to solve the problem without exploding files sizes on my HD.

I am confused why the phrase "(with optional external library)" is used 
on this page (http://sox.sourceforge.net/) when listing FLAC (first 
list, right column, 8th item down). It's making it appear similar to how 
I got MP3s working, by placing the "lame_enc.dll" in the same folder as 
the "sox.exe". Is there a "flac_enc.dll" that's equivalent?

As to the speed increase using FLAC - the very slowest operation on my 
computer is I/O. So, I am willing to use lots of processor time to do 
lossless compression and then write out a much smaller file (way smaller 
than the 10s of MB that the files begin to be towards the end of my 20 
minutes). As such, I figured that FLAC would maximize throughput on my 
primary constraint, I/O. Once I get FLAC (or some other lossless 
compression format) working, I will let you know what I experience in 
terms of performance gain. It might be as you say, not much.

I would rather not use Cygwin at this point. I have already invested a 
number of hours in the current design. If I have to, I will. I sure hope 
that adding FLAC is as simple as adding MP3 support was, just adding a 
.dll to the sox.exe folder.


Thank you,

Jim


Chris Bagwell wrote:
> Jim O'Flaherty wrote:
>   
>> So some questions:
>>   A) Is taking each of the 140 files and prepending it with (n * 8 
>> seconds of) silence (using the "pad" option) and then mixing the 140 
>> tracks together the proper way to approach generating the desired output 
>> of 140 small samples each playing at an 8 second interval? And what 
>> other options in SOX might there be to achieving this same effect?
>>   
>>     
> Sounds like your on the right track.  I have a small suggestion that 
> will save some disk space.  If the majority are less then 8 seconds then 
> use the soxi to find the exact length, do some script math to find how 
> much to pad it out to 8 seconds and use pad to do that  Then use the 
> --combine concatenate option on sox to concat as many exact 8 second 
> files as possible together into a single file.  If they were all less 
> then 8 seconds then you'd be able to do that with out the megs of 
> padding at beginning.
>
> Since I think you said they are not all 8 seconds, at least concat'ing 
> all that you can into bigger files first will reduce the number 
> intermediate files you need to concat with megs of silenece.
>   
>>   B) How much will FLAC speed up the processing? Using .wav as my 
>> output, saving tracks with 320 second of silence was taking 10s of 
>> seconds due to the file being 10s of MB large.
>>   
>>     
> I'm not sure that using FLAC will help with anything except disk space.
>   
>>   C) Where can I go to find out what to dl and where to place it 
>> regarding the FLAC library so that SOX can use it?
>>
>>
>>   
>>     
> Your using windows, right?   The cygwin version of sox on download page 
> contains FLAC support so you may give it a try.  It may have a file 
> pathname issues in your script since cygwin emulates POSIX environment.
>
> SoX under windows doesn't support dynamic detecting of DLL's so not much 
> you could do expect recompile using mingw or VC++ to add in FLAC 
> support.  Thats not been done as far as I know before.
>
> Chris
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Sox-users mailing list
> Sox...@li...
> https://lists.sourceforge.net/lists/listinfo/sox-users
>
>   

--- On Fri, 29/8/08, Mike Hirst <mik...@bl...> wrote:

> Where can I find an explanation of the terms...

Please see the updated docs at http://sox.sourceforge.net/Docs/HomePage

Cheers,
Rob


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On Sunday 31 August 2008 2:51 pm, you wrote:
> Quick reply, as I'm not a Windows guru, and I hope you will get a better
> reply(!).

OK, Chris posted at the same time.
Trust his; rather than mine!!

Would just add, do watch volume when mixing.
You do _not_ want SoX to halve the volume each time it mixes two files, as 
your silence will mean there is no risk of clipping anyway.
In the manual.

MC

Hi

Quick reply, as I'm not a Windows guru, and I hope you will get a better 
reply(!).

You are trying to generate 18min 40s of output (140*8 seconds)(?), which is 
about a quarter to a third of a CD (as WAV) so about 200 MBytes.

If this is a 'one off' fair enough, if not you might be better writing a 
script (and may find a bootable Linux DVD a lot easier ... in the end).

If you have the disc space why not continue till you have 200 Mbytes?

Presuming FLAC has a Windows version, just install that and do
a conversion of final.wav to final.flac?
(If FLAC is installed before SoX I suspect it just finds it and you could do 
the conversion in SoX, but unless discspace is a problem then compressing the 
'mix' 140 times (each stage) is just going to slow everything down!!)
FLAC will give you an output of 30 to 50% of the original (see their site for 
less 'if i remember aright' figures!). With lots of silence you should get a 
better figure than the typical.

If you want smaller (about 10% of original) use Vorbis (as in Ogg-Vorbis) or 
... MP3. (But it will be lossy, unlike FLAC).

If you save compression to the last step, then SoX as it is can do the hard 
work.

If you want a GUI compression then try Audacity (just load your final.wav in 
and export as flac or ogg or MP3) ---again you will need the relevant 
libraries but the Audacity site should tell you.

The SoX build literature does tell you all about optional libraries. But my 
suspicion is that on Windows you may have to install them first and then 
re-install SoX.

As before, if this is not a 'one off', it would be worth getting everything 
working, if not, the above may give you a quick/dirty work around.

Michael

BTW There is surely an easy way of padding each file to 8 seconds, then just 
concatenating the lot, but if you have already padded them all why start 
again? (Though the 14th mix is going to be of two 200 MB files !!)
That way the 140 input files would only total about 200 MBytes. Your method 
(if I understood) will need about 20 GBytes of input files, but presumably 
you make mix and delete, then repeat?


On Sunday 31 August 2008 3:32 am, you wrote:
> Hi,
>
> I have a project where I am taking a series of small sound files (.wav)
> and attempting to combine them into a single .wav file. In a specific
> order and at every 8 second marker starting from 0, I need one of these
> small sound files to play until it completes (typically in less than 8
> seconds). And then on the next 8 second marker, another small sound file
> plays. I have 140 these spanning 20 minutes.
>
> My first approach was to take each of the small sound files and prepend
> (using "pad") a number of seconds to the file. However, by the time it
> got to the 40th file, what was a small sound file before (~422K) was
> growing into the 10s of MB. I think this is because the output was a
> .wav and there is no compression in a .wav file. Here's an example
> Windows DOS command line entry:
> %SOX% %PATH_SS%\024.wav %PATH_TEMP%\024_silence40.wav pad 304.000 norm
>
> I am not stuck with .wav except as my input type. I want to experiment
> with using .flac. However, apparently some optional library is required.
> And, I have looked all over the SOX site and have not been able to
> figure out what that library might be, where to find it and what to do
> with it once I found it. I then went to the FLAC site. That was no help
> as there were no SOX references there.
>
> So some questions:
>   A) Is taking each of the 140 files and prepending it with (n * 8
> seconds of) silence (using the "pad" option) and then mixing the 140
> tracks together the proper way to approach generating the desired output
> of 140 small samples each playing at an 8 second interval? And what
> other options in SOX might there be to achieving this same effect?
>   B) How much will FLAC speed up the processing? Using .wav as my
> output, saving tracks with 320 second of silence was taking 10s of
> seconds due to the file being 10s of MB large.
>   C) Where can I go to find out what to dl and where to place it
> regarding the FLAC library so that SOX can use it?
>
>
> Thank you,
>
> Jim
>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's
> challenge Build the coolest Linux based applications with Moblin SDK & win
> great prizes Grand prize is a trip for two to an Open Source event anywhere
> in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Sox-users mailing list
> Sox...@li...
> https://lists.sourceforge.net/lists/listinfo/sox-users

Jim O'Flaherty wrote:
> So some questions:
>   A) Is taking each of the 140 files and prepending it with (n * 8 
> seconds of) silence (using the "pad" option) and then mixing the 140 
> tracks together the proper way to approach generating the desired output 
> of 140 small samples each playing at an 8 second interval? And what 
> other options in SOX might there be to achieving this same effect?
>   
Sounds like your on the right track.  I have a small suggestion that 
will save some disk space.  If the majority are less then 8 seconds then 
use the soxi to find the exact length, do some script math to find how 
much to pad it out to 8 seconds and use pad to do that  Then use the 
--combine concatenate option on sox to concat as many exact 8 second 
files as possible together into a single file.  If they were all less 
then 8 seconds then you'd be able to do that with out the megs of 
padding at beginning.

Since I think you said they are not all 8 seconds, at least concat'ing 
all that you can into bigger files first will reduce the number 
intermediate files you need to concat with megs of silenece.
>   B) How much will FLAC speed up the processing? Using .wav as my 
> output, saving tracks with 320 second of silence was taking 10s of 
> seconds due to the file being 10s of MB large.
>   
I'm not sure that using FLAC will help with anything except disk space.
>   C) Where can I go to find out what to dl and where to place it 
> regarding the FLAC library so that SOX can use it?
>
>
>   
Your using windows, right?   The cygwin version of sox on download page 
contains FLAC support so you may give it a try.  It may have a file 
pathname issues in your script since cygwin emulates POSIX environment.

SoX under windows doesn't support dynamic detecting of DLL's so not much 
you could do expect recompile using mingw or VC++ to add in FLAC 
support.  Thats not been done as far as I know before.

Chris

Hi,

I have a project where I am taking a series of small sound files (.wav) 
and attempting to combine them into a single .wav file. In a specific 
order and at every 8 second marker starting from 0, I need one of these 
small sound files to play until it completes (typically in less than 8 
seconds). And then on the next 8 second marker, another small sound file 
plays. I have 140 these spanning 20 minutes.

My first approach was to take each of the small sound files and prepend 
(using "pad") a number of seconds to the file. However, by the time it 
got to the 40th file, what was a small sound file before (~422K) was 
growing into the 10s of MB. I think this is because the output was a 
.wav and there is no compression in a .wav file. Here's an example 
Windows DOS command line entry:
%SOX% %PATH_SS%\024.wav %PATH_TEMP%\024_silence40.wav pad 304.000 norm

I am not stuck with .wav except as my input type. I want to experiment 
with using .flac. However, apparently some optional library is required. 
And, I have looked all over the SOX site and have not been able to 
figure out what that library might be, where to find it and what to do 
with it once I found it. I then went to the FLAC site. That was no help 
as there were no SOX references there.

So some questions:
  A) Is taking each of the 140 files and prepending it with (n * 8 
seconds of) silence (using the "pad" option) and then mixing the 140 
tracks together the proper way to approach generating the desired output 
of 140 small samples each playing at an 8 second interval? And what 
other options in SOX might there be to achieving this same effect?
  B) How much will FLAC speed up the processing? Using .wav as my 
output, saving tracks with 320 second of silence was taking 10s of 
seconds due to the file being 10s of MB large.
  C) Where can I go to find out what to dl and where to place it 
regarding the FLAC library so that SOX can use it?


Thank you,

Jim

hi
i have Version 12.17.9 installed on a debian...

when issuing the following command: soxmix -S gia.mp3 jungle.mp3 test.wav

i have a final.wav created, but this file is not a mix of both files, it
"contains" only the second one...any clue ?

thanks for your help !

regards

Gabriel

Where can I find an explanation of the terms:

Scaled by
Maximum amplitude
Minimum amplitude
Midline amplitude
Mean norm
Mean amplitude
RMS amplitude
Maximum delta
Minimum delta
Mean delta
RMS delta
Rough frequency
Volume adjustment

as used in output from sox stat?

I'd also like to know what units are used for each measurement.

-- 
Mike Hirst
Managing Director
DAS-360°
16 Ocean View
Whitley Bay
Tyne & Wear
NE26 1AL

tel: 0191 289 3186
email: mik...@bl...
web: http://www.das360.net

On Fri, Aug 29, 2008 at 12:17 AM, Chris Rogus <cri...@gm...> wrote:
> I still don't quite get the clipping business as it relates to the sox
> software (I see the problem with my speakers, but how does sox know how high
> my speakers can handle?...)

 The amplitude at any sample is represented in software as an integer.
That integer has a limited size. For argument's sake, say it has a
range of 0-9. Now, at a particular sample you might have an amplitude
of 5 in one file and 6 in another. To mix signals you can just add
their samples together, which with no volume scaling leaves you with
an amplitude of 11 - too high to represent in software! So, the output
sample gets clipped to 9.
-sqweek

Thanks, -v 1 definitely did the trick, exactly how I wanted.  However, for
those who want to also use this, I'd like to clarify that the -v 1 goes
before all the input files, such as:

sox -m -v 1 a.wav -v 1 b.wav out.wav


I still don't quite get the clipping business as it relates to the sox
software (I see the problem with my speakers, but how does sox know how high
my speakers can handle?...) but I am not going to worry about it -- the
sounds mix exactly as they are, as if they were just playing at the same
time together, and I am satisfied.


On Thu, Aug 28, 2008 at 2:27 AM, robs <aq...@ya...> wrote:

> --- On Wed, 27/8/08, Chris Rogus <cri...@gm...> wrote:
> > out how to just put all the tracks together in one file
> > (all files with
> > stereo sound, so two channels) *without* changing the
> > volume of any of the
> > inputs in the final output.  Can anyone tell me how to do
> > that?  I just want
>
> There are a few options:
>
> sox -m -v 1 ...
>
> will do exactly what you ask (at most risk of clipping).
>
> sox --mix-power ...
>
> will mix to a volume that is roughly as loud as one input file (with a
> small risk of clipping) -- Note: not available before SoX 14.1.0.
>
> sox -m ... norm
>
> (SoX 14.1.0) normalises the mixed audio to the loudest possible without
> clipping
>
> sox -m ... compand ...
>
> can be used to compress the mix to make it sound louder.
>
> > I'm not worried about
> > clipping....  I think -- though I'm not quite sure what
> > the clipping the
> > docs refer to is in this context and if someone could
> > explain that to me as
> > well, that might be helpful.
>
> There's a small section on clipping in the manual page, just before the
> section on combining; otherwise, see
> http://en.wikipedia.org/wiki/Clipping_(audio)<http://en.wikipedia.org/wiki/Clipping_%28audio%29>
>
> Cheers,
> Rob
>
> Send instant messages to your online friends http://uk.messenger.yahoo.com
>

--- On Wed, 27/8/08, Chris Rogus <cri...@gm...> wrote:
> out how to just put all the tracks together in one file
> (all files with
> stereo sound, so two channels) *without* changing the
> volume of any of the
> inputs in the final output.  Can anyone tell me how to do
> that?  I just want

There are a few options:

sox -m -v 1 ...

will do exactly what you ask (at most risk of clipping).

sox --mix-power ...

will mix to a volume that is roughly as loud as one input file (with a small risk of clipping) -- Note: not available before SoX 14.1.0.

sox -m ... norm

(SoX 14.1.0) normalises the mixed audio to the loudest possible without clipping 

sox -m ... compand ...

can be used to compress the mix to make it sound louder.

> I'm not worried about
> clipping....  I think -- though I'm not quite sure what
> the clipping the
> docs refer to is in this context and if someone could
> explain that to me as
> well, that might be helpful.

There's a small section on clipping in the manual page, just before the section on combining; otherwise, see http://en.wikipedia.org/wiki/Clipping_(audio)

Cheers,
Rob

Send instant messages to your online friends http://uk.messenger.yahoo.com 

Hi, I have been using sox to merge a few different audio tracks together
into just one file, with the -m (mix) combining method.  However, it very
noticably affects the volume of the different pieces once they're all put
together, especially if one of the inputs is of a significantly lower or
higher volume than the other input(s) -- intentionally so, I might add.  I
found this "explained" in the docs, that -m lowers the volume of the inputs
before combining, in the "Input File Combining" section:
http://sox.sourceforge.net/sox.html#lbAJ -- right at the end, the three
paragraphs before "Output Files".  However, it didn't really help me figure
out how to just put all the tracks together in one file (all files with
stereo sound, so two channels) *without* changing the volume of any of the
inputs in the final output.  Can anyone tell me how to do that?  I just want
the input sounds, exactly as they are, combined together all in one final
output file, so I don't want the volume adjusted, and I'm not worried about
clipping....  I think -- though I'm not quite sure what the clipping the
docs refer to is in this context and if someone could explain that to me as
well, that might be helpful.

For reference, it really is very simple what I'm doing currently, just:
sox -m a.wav b.wav out.wav

Only, out.wav definitely has a different volume for both a and b than they
had going in.  I want them to stay as they are.


Thanks a bunch.

--- On Tue, 26/8/08, Mats Folkesson <mat...@er...> wrote:

> From: Mats Folkesson <mat...@er...>
> Subject: [SoX-users] How extract one channel from a stereo file
> To: sox...@li...
> Date: Tuesday, 26 August, 2008, 12:05 PM
> Hi,
> how do I extract one channel from a stereo file...? 

Try something like this:

sox infile -c 1 outfile mixer -l  (or -r)

/Rob

Send instant messages to your online friends http://uk.messenger.yahoo.com 

Hi,
how do I extract one channel from a stereo file...? 

/Mats

Chris,

This is the line that worked exactly as I needed:
%SOX% %SAMPLES%\utterance1.wav utterance1_silence.wav pad 1.349

And when I checked utterance1_silence.wav in Audacity, it was precisely 
1.349 seconds of silence prepended in front of utterance1.wav. Perfect

Thank you very much for your help.


Jim


Jim O'Flaherty wrote:
> Chris,
>
> Awesome! I definitely have copying working (and have been converting 
> mono files to stereo).
>
> I will look at the pad option. I had not seen that at all. And once I 
> get it working, I will reply here to let you know what I figured out.
>
> BTW, the reason I took the route I did is it was one of the examples 
> at the top of this page:
> http://sox.sourceforge.net/sox.html - 3rd example down
>
>
> Thank you,
>
> Jim
>
>
> Chris Bagwell wrote:
>> Jim,
>>
>> I was just starting with the basics to see if you can copy a input file 
>> to an output file (with no silence added) because you were showing 
>> command lines that wouldn't work.  If you can do that then you can next 
>> move to using effects to add silence.
>>
>> Once you get a straight copy working then look at the soxeffect man page 
>> for the pad effect as it can pad silence to file.
>>
>> sox infile outfile pad 4000s
>>
>> will add 4000 samples to front.  I'll leave it up to you to compute how 
>> many samples are required for your 1349ms or to convert 1.349ms into the 
>> time format that sox accepts.
>>
>> Chris
>>
>> Jim O'Flaherty wrote:
>>   
>>> Chris,
>>>
>>> I think I might not be making myself as clear as I need to...
>>> Input: utterance1.wav (immediate and continuous talking for 4,012ms)
>>> Output: utterance1_silence.wav (where this is 1,349ms of silence 
>>> followed by the whole of utterance1.wav, i.e. there needs to be 
>>> silence and then talking for a total of 5,361ms)
>>>
>>>
>>> Jim
>>>
>>>
>>> Jim O'Flaherty wrote:
>>>     
>>>> Chris,
>>>>
>>>> Thank you very much for your quick response.
>>>>
>>>> I am confused. The utterance1.wav file (which is a valid .wav file) 
>>>> has no silence before it. I am looking for an output file of 
>>>> utterance1_silence.wav to be created which has 1,349 milliseconds of 
>>>> silence prepended. I don't have a .wav file containing silence.
>>>>
>>>> If I just enter the command you show, where does the additional 
>>>> 1,349ms of silence get generated and prepended?
>>>>
>>>>
>>>> Jim
>>>>
>>>>
>>>> Chris Bagwell wrote:
>>>>       
>>>>> Jim O'Flaherty wrote:
>>>>>   
>>>>>         
>>>>>> The command lines I have tried:
>>>>>> A) %SOX% -r 44100 -a -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
>>>>>>     Received: An error of => C:\Archive\Apps\Sound\sox-14.1.0\sox.exe 
>>>>>> formats: bad input format for file 
>>>>>> `C:\Data\Projects\sox-test\Compositions\Tracks\Example1\utterance1.wav': 
>>>>>> data encoding was not specified
>>>>>>
>>>>>>
>>>>>> What am I doing wrong? Any help would be greatly appreciated.
>>>>>>
>>>>>>   
>>>>>>     
>>>>>>           
>>>>> Lets start with some basics... First, assuming its a valid WAV file your 
>>>>> using as input then there are no need for any command line options 
>>>>> *before* the input filename.  It will read the file and use right 
>>>>> values.  Above will just confuse things.
>>>>>
>>>>> Next, if you want the output file to be exact same options as input 
>>>>> file; just with silence added; then you also do not need to specify any 
>>>>> options *after* the input filename.  Options *after* input filenames are 
>>>>> applied to output file.
>>>>>
>>>>> sox utterance1.wav utterance1_silence.wav
>>>>>
>>>>> Chris
>>>>>
>>>>>       
>>>>>         
>>
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
>> Build the coolest Linux based applications with Moblin SDK & win great prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the world
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>> _______________________________________________
>> Sox-users mailing list
>> Sox...@li...
>> https://lists.sourceforge.net/lists/listinfo/sox-users
>>
>>   
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
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>   

--- On Sun, 24/8/08, Jim O'Flaherty <jim...@ya...> wrote:
> BTW, the reason I took the route I did is it was one of the
> examples at 
> the top of this page:
> http://sox.sourceforge.net/sox.html - 3rd example down

Ah yes, I was never particularly happy with the text for that example; I've now updated it with something hopefully a little clearer.

Cheers,
Rob

Send instant messages to your online friends http://uk.messenger.yahoo.com 

Hi,

Thank you very much for all your help.

Following the example suggested, I tried :
sox -m sample.wav music.wav  result.wav pad 1 10 repeat 9

and

sox sample.wav music.wav result.wav fade t 0:0:20

But I can only hear the sample.wav played once at the beginning of the
result.wav instead of being mixed into the music.wav every 15 minutes.

Any hint on how to solve this problem will be greatly appreciated.

Thanks,
Pete

Chris,

Awesome! I definitely have copying working (and have been converting 
mono files to stereo).

I will look at the pad option. I had not seen that at all. And once I 
get it working, I will reply here to let you know what I figured out.

BTW, the reason I took the route I did is it was one of the examples at 
the top of this page:
http://sox.sourceforge.net/sox.html - 3rd example down


Thank you,

Jim


Chris Bagwell wrote:
> Jim,
>
> I was just starting with the basics to see if you can copy a input file 
> to an output file (with no silence added) because you were showing 
> command lines that wouldn't work.  If you can do that then you can next 
> move to using effects to add silence.
>
> Once you get a straight copy working then look at the soxeffect man page 
> for the pad effect as it can pad silence to file.
>
> sox infile outfile pad 4000s
>
> will add 4000 samples to front.  I'll leave it up to you to compute how 
> many samples are required for your 1349ms or to convert 1.349ms into the 
> time format that sox accepts.
>
> Chris
>
> Jim O'Flaherty wrote:
>   
>> Chris,
>>
>> I think I might not be making myself as clear as I need to...
>> Input: utterance1.wav (immediate and continuous talking for 4,012ms)
>> Output: utterance1_silence.wav (where this is 1,349ms of silence 
>> followed by the whole of utterance1.wav, i.e. there needs to be 
>> silence and then talking for a total of 5,361ms)
>>
>>
>> Jim
>>
>>
>> Jim O'Flaherty wrote:
>>     
>>> Chris,
>>>
>>> Thank you very much for your quick response.
>>>
>>> I am confused. The utterance1.wav file (which is a valid .wav file) 
>>> has no silence before it. I am looking for an output file of 
>>> utterance1_silence.wav to be created which has 1,349 milliseconds of 
>>> silence prepended. I don't have a .wav file containing silence.
>>>
>>> If I just enter the command you show, where does the additional 
>>> 1,349ms of silence get generated and prepended?
>>>
>>>
>>> Jim
>>>
>>>
>>> Chris Bagwell wrote:
>>>       
>>>> Jim O'Flaherty wrote:
>>>>   
>>>>         
>>>>> The command lines I have tried:
>>>>> A) %SOX% -r 44100 -a -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
>>>>>     Received: An error of => C:\Archive\Apps\Sound\sox-14.1.0\sox.exe 
>>>>> formats: bad input format for file 
>>>>> `C:\Data\Projects\sox-test\Compositions\Tracks\Example1\utterance1.wav': 
>>>>> data encoding was not specified
>>>>>
>>>>>
>>>>> What am I doing wrong? Any help would be greatly appreciated.
>>>>>
>>>>>   
>>>>>     
>>>>>           
>>>> Lets start with some basics... First, assuming its a valid WAV file your 
>>>> using as input then there are no need for any command line options 
>>>> *before* the input filename.  It will read the file and use right 
>>>> values.  Above will just confuse things.
>>>>
>>>> Next, if you want the output file to be exact same options as input 
>>>> file; just with silence added; then you also do not need to specify any 
>>>> options *after* the input filename.  Options *after* input filenames are 
>>>> applied to output file.
>>>>
>>>> sox utterance1.wav utterance1_silence.wav
>>>>
>>>> Chris
>>>>
>>>>       
>>>>         
>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Sox-users mailing list
> Sox...@li...
> https://lists.sourceforge.net/lists/listinfo/sox-users
>
>   

Jim,

I was just starting with the basics to see if you can copy a input file 
to an output file (with no silence added) because you were showing 
command lines that wouldn't work.  If you can do that then you can next 
move to using effects to add silence.

Once you get a straight copy working then look at the soxeffect man page 
for the pad effect as it can pad silence to file.

sox infile outfile pad 4000s

will add 4000 samples to front.  I'll leave it up to you to compute how 
many samples are required for your 1349ms or to convert 1.349ms into the 
time format that sox accepts.

Chris

Jim O'Flaherty wrote:
> Chris,
>
> I think I might not be making myself as clear as I need to...
> Input: utterance1.wav (immediate and continuous talking for 4,012ms)
> Output: utterance1_silence.wav (where this is 1,349ms of silence 
> followed by the whole of utterance1.wav, i.e. there needs to be 
> silence and then talking for a total of 5,361ms)
>
>
> Jim
>
>
> Jim O'Flaherty wrote:
>> Chris,
>>
>> Thank you very much for your quick response.
>>
>> I am confused. The utterance1.wav file (which is a valid .wav file) 
>> has no silence before it. I am looking for an output file of 
>> utterance1_silence.wav to be created which has 1,349 milliseconds of 
>> silence prepended. I don't have a .wav file containing silence.
>>
>> If I just enter the command you show, where does the additional 
>> 1,349ms of silence get generated and prepended?
>>
>>
>> Jim
>>
>>
>> Chris Bagwell wrote:
>>> Jim O'Flaherty wrote:
>>>   
>>>> The command lines I have tried:
>>>> A) %SOX% -r 44100 -a -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
>>>>     Received: An error of => C:\Archive\Apps\Sound\sox-14.1.0\sox.exe 
>>>> formats: bad input format for file 
>>>> `C:\Data\Projects\sox-test\Compositions\Tracks\Example1\utterance1.wav': 
>>>> data encoding was not specified
>>>>
>>>>
>>>> What am I doing wrong? Any help would be greatly appreciated.
>>>>
>>>>   
>>>>     
>>> Lets start with some basics... First, assuming its a valid WAV file your 
>>> using as input then there are no need for any command line options 
>>> *before* the input filename.  It will read the file and use right 
>>> values.  Above will just confuse things.
>>>
>>> Next, if you want the output file to be exact same options as input 
>>> file; just with silence added; then you also do not need to specify any 
>>> options *after* the input filename.  Options *after* input filenames are 
>>> applied to output file.
>>>
>>> sox utterance1.wav utterance1_silence.wav
>>>
>>> Chris
>>>
>>>       

Chris,

I think I might not be making myself as clear as I need to...
Input: utterance1.wav (immediate and continuous talking for 4,012ms)
Output: utterance1_silence.wav (where this is 1,349ms of silence 
followed by the whole of utterance1.wav, i.e. there needs to be silence 
and then talking for a total of 5,361ms)


Jim


Jim O'Flaherty wrote:
> Chris,
>
> Thank you very much for your quick response.
>
> I am confused. The utterance1.wav file (which is a valid .wav file) 
> has no silence before it. I am looking for an output file of 
> utterance1_silence.wav to be created which has 1,349 milliseconds of 
> silence prepended. I don't have a .wav file containing silence.
>
> If I just enter the command you show, where does the additional 
> 1,349ms of silence get generated and prepended?
>
>
> Jim
>
>
> Chris Bagwell wrote:
>> Jim O'Flaherty wrote:
>>   
>>> The command lines I have tried:
>>> A) %SOX% -r 44100 -a -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
>>>     Received: An error of => C:\Archive\Apps\Sound\sox-14.1.0\sox.exe 
>>> formats: bad input format for file 
>>> `C:\Data\Projects\sox-test\Compositions\Tracks\Example1\utterance1.wav': 
>>> data encoding was not specified
>>>
>>>
>>> What am I doing wrong? Any help would be greatly appreciated.
>>>
>>>   
>>>     
>> Lets start with some basics... First, assuming its a valid WAV file your 
>> using as input then there are no need for any command line options 
>> *before* the input filename.  It will read the file and use right 
>> values.  Above will just confuse things.
>>
>> Next, if you want the output file to be exact same options as input 
>> file; just with silence added; then you also do not need to specify any 
>> options *after* the input filename.  Options *after* input filenames are 
>> applied to output file.
>>
>> sox utterance1.wav utterance1_silence.wav
>>
>> Chris
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
>> Build the coolest Linux based applications with Moblin SDK & win great prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> _______________________________________________
>> Sox-users mailing list
>> Sox...@li...
>> https://lists.sourceforge.net/lists/listinfo/sox-users
>>
>>   
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> ------------------------------------------------------------------------
>
> _______________________________________________
> Sox-users mailing list
> Sox...@li...
> https://lists.sourceforge.net/lists/listinfo/sox-users
>   

Chris,

Thank you very much for your quick response.

I am confused. The utterance1.wav file (which is a valid .wav file) has 
no silence before it. I am looking for an output file of 
utterance1_silence.wav to be created which has 1,349 milliseconds of 
silence prepended. I don't have a .wav file containing silence.

If I just enter the command you show, where does the additional 1,349ms 
of silence get generated and prepended?


Jim


Chris Bagwell wrote:
> Jim O'Flaherty wrote:
>   
>> The command lines I have tried:
>> A) %SOX% -r 44100 -a -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
>>     Received: An error of => C:\Archive\Apps\Sound\sox-14.1.0\sox.exe 
>> formats: bad input format for file 
>> `C:\Data\Projects\sox-test\Compositions\Tracks\Example1\utterance1.wav': 
>> data encoding was not specified
>>
>>
>> What am I doing wrong? Any help would be greatly appreciated.
>>
>>   
>>     
> Lets start with some basics... First, assuming its a valid WAV file your 
> using as input then there are no need for any command line options 
> *before* the input filename.  It will read the file and use right 
> values.  Above will just confuse things.
>
> Next, if you want the output file to be exact same options as input 
> file; just with silence added; then you also do not need to specify any 
> options *after* the input filename.  Options *after* input filenames are 
> applied to output file.
>
> sox utterance1.wav utterance1_silence.wav
>
> Chris
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Sox-users mailing list
> Sox...@li...
> https://lists.sourceforge.net/lists/listinfo/sox-users
>
>   

Jim O'Flaherty wrote:
> The command lines I have tried:
> A) %SOX% -r 44100 -a -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
>     Received: An error of => C:\Archive\Apps\Sound\sox-14.1.0\sox.exe 
> formats: bad input format for file 
> `C:\Data\Projects\sox-test\Compositions\Tracks\Example1\utterance1.wav': 
> data encoding was not specified
>
>
> What am I doing wrong? Any help would be greatly appreciated.
>
>   
Lets start with some basics... First, assuming its a valid WAV file your 
using as input then there are no need for any command line options 
*before* the input filename.  It will read the file and use right 
values.  Above will just confuse things.

Next, if you want the output file to be exact same options as input 
file; just with silence added; then you also do not need to specify any 
options *after* the input filename.  Options *after* input filenames are 
applied to output file.

sox utterance1.wav utterance1_silence.wav

Chris

All,

I am attempting to use Sox on Windows XP to prepend some silence to a 
.wav file. I am having all sorts of difficulty figuring out the command 
line parameters. I have read the online man pages over and over trying 
to figure out the right combination.

My goal: To prepend 1,349 milliseconds of silence to a file called 
utterance1.wav (which contains a spoken phrase lasting 4 seconds at 
705kbps in a single channel)

The command lines I have tried:
A) %SOX% -r 44100 -a -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
    Received: An error of => C:\Archive\Apps\Sound\sox-14.1.0\sox.exe 
formats: bad input format for file 
`C:\Data\Projects\sox-test\Compositions\Tracks\Example1\utterance1.wav': 
data encoding was not specified

B) %SOX% -r 44100 -u -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
    Received: command executes without error and file is output, and 
when played it has an absolutely horrible noisy background and the voice 
track does not seem delayed at all.

C) %SOX% -r 44100 -A -2 -c 1 %SAMPLES%\utterance1.wav utterance1_silence.wav
    Received: An error of => C:\Archive\Apps\Sound\sox-14.1.0\sox.exe 
formats: bad input format for file 
`C:\Data\Projects\sox-test\Compositions\Tracks\Example1\utterance1.wav': 
data encoding was not specified

And when I tried using the -n option, I could not figure out how to get 
the command to stop without hitting Ctrl-C and then having a huge file 
(+50MB) filled with silence.

What am I doing wrong? Any help would be greatly appreciated.


Thank you,

Jim