Export WAV in chain changes bit rate

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Gale Andrews
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Re: Export WAV in chain changes bit rate

Post by Gale Andrews » Sat Apr 14, 2012 3:21 am

autordesk wrote:Thanks for your response, Steve.
I need to export 8 bit mono ulaw wav files en masse.
I can do this one by one using Export, but I would really rather use the Chain functionality, since I have over 200 files to process.
Assuming you are on Windows, I sent you the link to the old 1.3.14 alpha build via Private Message and added your vote for more export format options in Chains. Please use the official 2.0.0 build after exporting your files.


Gale
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autordesk
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Re: Export WAV in chain changes bit rate

Post by autordesk » Sat Apr 14, 2012 3:19 pm

Thank you for your PM. Gale. That worked like a charm!
have a great weekend.

Langhors
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Re: Export WAV in chain changes bit rate

Post by Langhors » Thu Apr 19, 2012 7:49 am

Hello Gale,

I also have a requirement to batch convert audio files to 8 bit, 8kHz, CCITT ulaw wav format. Would it be possible for you to share the alternate code?

Thank you for your time and effort.

LH

Gale Andrews
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Re: Export WAV in chain changes bit rate

Post by Gale Andrews » Sun Apr 22, 2012 4:52 am

Langhors wrote:I also have a requirement to batch convert audio files to 8 bit, 8kHz, CCITT ulaw wav format. Would it be possible for you to share the alternate code?
I don't actually have a current patch to hand, but I've sent you a Private Message with a link and instructions.



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Langhors
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Re: Export WAV in chain changes bit rate

Post by Langhors » Sun Apr 22, 2012 6:38 am

Gale, thanks a million for the patch and the accompanying instructions. This ideal in IVR migration situations.

Do you need me to vote some where to have this possibly incorporated in the official codebase?

Thanks again,

LH

Gale Andrews
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Re: Export WAV in chain changes bit rate

Post by Gale Andrews » Mon Apr 23, 2012 8:49 am

Langhors wrote:Do you need me to vote some where to have this possibly incorporated in the official codebase?
The patch needs polishing and integrating into much better Chain export routines, but I'll add your vote for export of "Other Uncompressed Files" being added to Chains.



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moodydoom
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Re: Export WAV in chain changes bit rate

Post by moodydoom » Thu May 03, 2012 7:47 pm

I am having the same problem converting a recording for our Mitel NuPoint Messaging system. Can you help figure out how to convert a file to a 8 bit U-Law?

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Re: Export WAV in chain changes bit rate

Post by Gale Andrews » Fri May 04, 2012 1:06 am

moodydoom wrote:I am having the same problem converting a recording for our Mitel NuPoint Messaging system. Can you help figure out how to convert a file to a 8 bit U-Law?
If you only want to convert one recording you don't need to use a chain.

Use Audacity 2.0.0. Beta versions of Audacity before 1.3.13 did not export standards-compliant U-Law files.

When you have 2.0.0, set the Audacity project rate bottom left of the window to 8000 Hz. If you have a stereo file you probably want to use Tracks > Stereo Track to Mono. Click File > Export..., choose "Other Uncompressed Files", click "Options". Then in "Specify Uncompressed Options", choose "WAV (Microsoft)" for Header and "U-Law" for Encoding. "U-Law" pre-specifies 8-bit. If your system requires raw data files without headers, choose "RAW (header-less)" instead of "WAV (Microsoft)".



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moodydoom
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Re: Export WAV in chain changes bit rate

Post by moodydoom » Tue May 08, 2012 12:48 pm

Thank you very much, Gale! That did the trick! It sounds great!

I appreciate the help.

Moody

Andreas Lindner
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Re: Export WAV in chain changes bit rate

Post by Andreas Lindner » Tue Jul 17, 2012 11:28 am

Hello Gale,

I also have a requirement to batch audio files to 8 bit, 8kHz, wav (like WAV (Microsoft) Unsigned 8bitPCM) format. (over 2000 files -- pls, help me!!).
(for Windows)

Andy
Last edited by Andreas Lindner on Tue Jul 17, 2012 2:24 pm, edited 1 time in total.

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