gmane.comp.audio.sox

sox.sf.net down

Jan Stary — 2013-05-21T06:00:32

http://sox.sourceforge.net/ has been "temporarily blocked"
snce yesterday afternoon - anyone knows what's going on?

Jan


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Using sox with external audio-devices on MacOSX

Schumacher Marlon — 2013-05-20T21:24:06

Hello,

I've been trying to find a way to use sox (14.4.1) on MacOS (10.7.5) with external audio devices, such as the "RME Fireface 800" or the "MOTU 828MK2" for playback of multichannel audio. Couldn't succeed so far. I tried two strategies:

1) Choose the audio device (Fireface 800) as the system's default audio device and use the option -d (to playback a stereo soundfile) using this command:

$sox /Users/Marlon_MBPro3/drumLoop.aif -d

/Users/Marlon_MBPro3/drumLoop.aif:

File Size: 614k Bit Rate: 1.41M
Encoding: Signed PCM
Channels: 2 < at > 16-bit
Samplerate: 44100Hz
Replaygain: off
Duration: 00:00:03.48

In:100% 00:00:03.48 [00:00:00.00] Out:153k [ -| ] Hd:1.0 Clip:0
Done.

Which results in distorted (crackles/clipping) and transposed/faster audio (the "transposition" seems related to buffer size (--buffer 4096 vs 2048 etc.).
PS I set the samplerate of the audio device to the same value as the sound file's (44.1kHz).

2) Then I used the following trick to first retrieve the names of the coreaudio driver registered to the system and then choose one for playback (as described in this thread: http://sourceforge.net/mailarchive/forum.php?thread_name=20120311154339.GA28976%40www.stare.cz&forum_name=sox-users )

$sox -V6 -n -t coreaudio nonexistent

-which returns a list of coreaudio drivers -> amongst them "Fireface 800 (".

Then I tried playback using the Fireface coreaudio driver like this:

$sox /Users/Marlon_MBPro3/drumLoop.aif -t coreaudio "Fireface 800 ("

Which again resulted in the same distorted audio.
Using the MOTU 828 MK2 in the same way I had similar distortions/crackles.

Then, I tried using virtual/internal audio drivers for MacOs such as Jack ( http://www.jackosx.com ) and Soundflower (https://github.com/tap/Soundflower ) as I described in that same thread (in 2011). Using soundflower and soundflowerbed to route it to the audio device the audio seemed ok at first, however I noticed intermittent crackles in the individual channels.

I don't really know what to do anymore at this point. Has anyone experienced the same behaviour or can someone perhaps recommend a fix or workaround? Could it for example be related to interleaved/non-interleaved multichannel audio? I would like to use sox in a multichannel studio environment if only it could talk to these other audio drivers... any hints greatly appreciated!!

Best,
Marlon
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sox w/ mp3 output on osx...

Kirk Is — 2013-05-14T19:42:36

I'm trying to get a copy of sox that can output mp3s and am being thwarted
at every step.

1. The default download doesn't have it.
2. "sox wrap" won't do it, outputting a 0-byte file
3. I installed homebrew. I hoped "brew install sox --with-libmp3lame" or
"brew install sox --with-mad --with-lame" might do it, but no.
(troublingly, I can put --with-anystupidname and homebrew doesn't report
that as a problem, so I have no way of knowing if the withs are working.
4 I tried to follow the instructions at
http://ggkarman.de/tech/building-sox-with-mp3-support-on-osx/ I'm not 100%
sure I'm downloading the right tarballs , but when I tried to compile the
sox part with --with-mad --with-lame it tells me can't find libmad, and I
haven't done enough with compiling to know what I'm doing wrong.

So, the situation basically stinks.

I finally got to where I need to (encoding very wonky wavs as mp3) by using
sox to make another mp3 at a better bit rate, and then using the lame
binary to convert to mp3 (making sure I use one of the presets, otherwise
the default quality is horrendous)
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Device names for AUDIODEV on Windows/Cygwin?

Doug Lee — 2013-05-09T15:55:07

I frequently want to use `play' to play sound through a non-default
device on Windows, be it through a native Windows or a Cygwin
implementation of SoX. Does anyone know how I could find the valid
device names that would work in the AUDIODEV environment variable so I
could do such a thing?

Thanks much.

De-popping with SoX

Amotz Hoshen — 2013-05-09T13:50:21

Hi all,

I'm trying to understand how to configure SoX to eliminate the 'plosives'
effect on a recorded voice-over file. (Plosives are P's & B's, mostly at
the beginning of words).

I have browsed the web and most people recommend to add a "pop filter"
hardware device, or manually repair the popping sound with audio tools such
as Audacity <http://audacity.sourceforge.net/>.

However the solution I'm looking for will not require additional
configuration per recording.

Many thanks!
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tuning / power spectrum / dominant frequencies /spectogram

Age A. — 2013-04-18T21:38:43

Hi all,

To detemine the exact tuning of recordings, I need to know the frequency,
for example whether an A sounds at 441 Hz or 442 Hz.
An exact measurement of the around 10 most dominant frequencies of the
whole song would do the job.
For technical reasons, reliable, usable freqencies are between 250 hz and
2000 Hz.

I tried:   sox <filename> -n stat -freq 2>data.txt

However, this only gives the power of 2048 frequency-points, with intervals
(0, 11.7, 23,4, 35,2, 46,9Hz, etc).
It doesn't give the extact frequencies because it does a Discrete Fourier
Transform (DFT) on the signal at 4096 sample intervals, without overlapping
and windowing.

I can find these frequencies manually with Audicity's spectum analyzer, but
am looking for software that can output this info.
Scripts are also welcome, but I've never really programmed.

Thanks in advance for your help!

Age
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recording with sox

Alex Kirchner — 2013-04-17T11:40:22

Sox is real switch-pocket knife, many options and i have the following
problem.

 

I want to start sox and sox have to record until  I stopped to speak
(silence) and then sox have to  automatically stopped (exit the program)

I start the record but I don't know how long it takes .

 

can I implement this with sox?

 

thanks for your help!

 

Alex.Kirchner

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ladspa vst - bridge

Schumacher Marlon — 2013-04-09T02:40:43

Hi there,

I was just wondering if anyone had success using a ladspa-vst-wrapper with sox, like the ladspa-vst-bridge here: http://web.audacityteam.org/vst/ ??

Thanks,
Marlon
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Ding Rugay — 2013-04-08T23:19:43

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Unable to read dat file

Nicholas Oettle — 2013-04-07T12:51:33

I'm having some difficulty in converting from a dat file to a wav file using SoX and am after some pointers.

I've been using some code to process wav files for a while now, whereby a wav file is converted to text as a data format, modified and then converted back into a wav file. For instance:

sox Infile.wav Outfile.dat

Followed by:

sox Infile.dat -b 24 -t wavpcm Outfile.wav

The wavpcm command is required by another application to read the file.

Previously, I have had no problems with 2 channel, 48 kHz, 32 second long files. However, I now wish to store more channels of data into a single file, such that I now have 24 channels per file. When converting from wav to dat, things are fine, but when I convert back to wav (without modifying the file in any way), I'm getting an 'Unable to read sample'  (unknown error code -1)

Any thoughts as to what may be causing this?

TIA
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Help with basic compand example

Paul Figgiani — 2013-03-30T00:27:26

Thanks for the help
I need to perform two functions: gain increase and soft-knee limiting at (if necessary) -1.5 dB
For example after analyzing input.wav I determine I need to add +6dB of gain. I want to define -1.5 dB as the peak ceiling to prevent the possibility of clipping. Handling the gain is no problem. Can someone give me an example on how to use compand to set my target ceiling?
I'm not referring to something like peal normalizing to -1.5 dB. I just need to define a ceiling just in case the gain increase would result in overs. 
Thanks again.

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Use SoX to make an audio play faster/slower in exactlya duration.

billhainh — 2013-03-26T05:33:49

I'm testing SoX, and this one comes up in my mind.

For example, I have a test1.ogg files with duration of 6000ms. Now I wanted
to:

a/ Make the file play faster, so that the duration will be about 5000ms (Or
a var that's lower than test1.ogg's duration)

b/ Make the file play slower, so that the duration is about 7000ms (Or a var
that's higher than test1.ogg's duration)

The input will only have the original files, and the duration I wanted the
files to play in. Is there a sox command to do this?

Best regard,

A.0.A.B



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Conversion from RAW to CVSD formats

John — 2013-03-25T22:39:49

I am in the process of building a CVSD output module for an existing
application. This will be used to convert a 16-bit signed integer input
format with a 32K sample rate into a CVSD output. When doing this conversion
manually with Sox, I would use the following command line:

"sox -t raw -b 16 -e signed-integer -r 32000 inputfile.raw -t cvs -r 32000
-x -X outputfile.cvs"

I have been using the example5 as a basis for beginning development. I am
able to read into 32-bit SOX intermediate format and dump out a .sox file
that matches that produced from SoX itself. Output to CVSD has not been
successful.

My question is what is the format of the samples going into lsx_cvsdwrite?

In trying to troubleshoot my way through, I have placed some strategic
printf's into that function, and have recompiled a local version of SoX.
When running with the above command line, the data passed in to
lsx_cvsdwrite is definitely different from what is read from my input file,
and bears no resemblance to what I interpret as Sox intermediate format.

For example, FFFD0000 gets translated to FFAC0000 and 0xFFF10000 ends up as
0x0EF20000.

Any help or information would be appreciated.

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Problem with libSoX installation (?)

billhainh — 2013-03-24T18:00:17

Hello, I'm currently setting up libsox but I'm stuck with it right at the
first step.

I have download the source, and compiled it. All the example* run good, so I
make install the lib.

I have also installed libsox_fmt_all, and now sox, play and rec work
flawlessly.

But when I #include <sox.h> in my code, and tried to use it, the program
will return:

< at >
formats: no handler for file extension `vorbis'
check failed: input = sox_open_read(argv[i], NULL, NULL, NULL)
< at >

the same with mp3 and other files format. I think there must be some missing
link to other codec lib. But I don't know what it is... 

I'm using Qt, and also new to using 3rd party library so if you could,
please give me a small lecture.

Best regard.



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fir option to use SoX als offline convolver

2013-03-23T11:36:01

Hello, 

I'm trying to use SoX as an offline convolver. With this I ran into
errors. 

(1) The filter I want to use for convolving is in a wav format, 32
Bit, stereo, 44,1 k, filter with a number of samples 2^18 = 262144. 

(2) To utilize this filter I converted it via SoX into an ascii
format 

   sox -c 2 -r 44100 -t f32 filter.wav filter.dat 

   Then I deleted the first column in the filter.dat file to gain a
two column config file. 

(3) Then I tried to use the "fir" effect for gaining a convolution
between the music file "input.wav" and the filter "filter.dat" 

   sox input.wav output.wav fir filter.dat 

 This leads to the following error message: 

This application has requested the Runtime to terminate it in an
unusual way.
Please contact the application's support team for more information.
Assertion failed! 

Program: C:UsersiDesktopSoX Sandboxsox.exe
File: effects_i_dsp.c, Line 95 

Expression: num_taps * 2 < result 

Please give me advice / support. Thanks a lot. 

Regards, 

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sox How to NON-concatenate outfiles

didier boumal — 2013-03-16T15:43:16

Hello,

Despite reading SoX documentation and sox-users Archives, I could not
find how to non-concatenate sox outfiles

By default, sox concatenate multiple infiles in one outfile
(for e, "sox ~/in/*.any ~/out/*.other" : makes one outfile *.other)
but is it possible to have multiple infiles and the same number of
outfiles (with, if possible, same filenames)?

Thank You very much for help




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Fader adjust

Rantis Cares — 2013-03-11T17:20:55

Hello List:

I'm Rantiscares, i'n new on the list, i don't speak english, a'im sorry.

My first question is.

I hava an archive ogg, i'd like use the gain. the fade is on 100% and
i need a volume ramp start 100% end 20%.

you have an idea?.

Thanks.

Rantiscares

Mixing two stereo files to a stereo file

a1s2d3f4 — 2013-03-08T21:40:22

I am having trouble finding information for figuring out what seems like a
simple command.

I have two or more short stereo segments which I'd like to "mix together",
specifying the start location for each segment in the output file (also
stereo).  (Typically, one ends, and the next begins shortly before the end
of the previous one - as the signal of the previous segment continues to die
down)

So, need to translate this to soxese
 sox -m stereoinput-part1.wav [start the following input file at X seconds]
stereoinput-part2.wav ...  longoutputmixedstereofile.wav

Is it possible?







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Merging and splitting large wav files (bug!)

Ulf Jaenicke-Rößler — 2013-03-06T09:38:05

Hi,

I've got some multichannel wav files. AFAIK, splitting those files is
done like this:
sox infile.wav outfile.l.wav remix 1
a.s.o.

However, if there's, say, 10 or 20 or even more channels in infile.wav
(variable), then those commands are a bit tedious. Is there a simpler
way?


Furthermore, merge combining those files (or other large mono files)
give invalid results, when the size of the combined file becomes
larger than 4GB. sox needs to use RF64 then, but it doesn't.

Best regards

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[OT] an audio format that supports indexing clips?

Weiwu Zhang — 2013-03-02T06:45:25

Dear all!

I've been looking for a way to stuff my 1000 short audio clips into
one big audio file, while retaining the possibility to play only a
single clip in it. I need this to avoid shipping a software package
with 1000 tiny files, especially they might be deployed to
in-efficient file systems like FAT.

The first thing come to my mind is to use a concatenate-able audio
format, like the old '.au' format, and create a index file to go with
it, pretty much like the output of strfile(1). Each entry in the index
file is the start and end pointer of a clip.

But, if there exist an audio format that can contain multiple clips,
not unlike TIFF image format which can contain multiple images in a
file, then I should prefer that, so that a user can work his mojo on
them without deciphering my index file.

I looked up wikipedia. It says

"8SVX (8-Bit Sampled Voice) audio format supports features such as
attack, release and section repeat, which are useful for storage of
musical instrument samples."

That suggests 8SVX format have a way to define a sub-clip within a big
audio file. I am sure this feature is not unique to that 8-bit age,
when this feature is worth mentioning. So my question is: what other
modern audio container formats allows me to define a clip, index it,
or even better, name each clip?

Thanks!
Best...

P. S. I know this is off-topic, but I can find a better place to
question: news:comp.multimedia have about less than 1 in-topic posts
per month. There seems to be no proper place to ask such question.

P. S. I did my homework to check what others would do in this case, as
it is a common need in computer games. It turns out, most computer
games ship with audio file packaged into a single big file, with a
proprietary archive format. Bethesda for example, ships .bsa files
that only they can open.

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SoX ReplayGain capabilities

Stefan Waldmann — 2013-02-26T18:02:21

Hi,

first post here.
SoX Version used: 14.4.0
OS used: Windows 7

I process replaygain tagged FLAC-files with SoX two times using
1. sox -D -V1 --single-threaded "my.flac" -n stat -v
2. sox -D -V1 --single-threaded --replay-gain track "my.flac" -n stat -v

but FLAC is limited (24-Bit) thus I tried the same with Wavpack-files 
(32-Bit). Unfortunately that didn't work. The resulting values are the 
same 'cause the replaygain tags (APEv2) are not recognized. Could this 
be implemented in the near future?

FLAC support seems broken (Windows compile) for 14.4.1 or is this 
intended? I neither do have the skills nor the knowledge to compile it 
myself. So it would be nice if someone could help.


Thank you all for this great tool, greetings ...

(... and excuse my bad English, please)



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