Hi all
I have been asked to deliver some audio for a phone system in the following format:
Files must be .wav format please, as follows:
Bit rate: 64kbps
Audio sample size: 8-bit
Channels: 1 (Mono)
Audio sample rate: 8khz
Format: CCITT u-law
Can anyone help with the simplest way to achieve this??
I have installed ffmpeg and fail with all the settings.
Simon
Using the FFMPEG export to change settings of a .WAV
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and the exact three-section version number of Audacity from "Audacity menu > About Audacity".
Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
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Simonsmithster
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Gale Andrews
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Re: Using the FFMPEG export to change settings of a .WAV
Audacity can do this without FFmpeg. It is more complicated to use FFmpeg to write U-Law.Simonsmithster wrote:I have been asked to deliver some audio for a phone system in the following format:
Files must be .wav format please, as follows:
Bit rate: 64kbps
Audio sample size: 8-bit
Channels: 1 (Mono)
Audio sample rate: 8khz
Format: CCITT u-law
Can anyone help with the simplest way to achieve this??
I have installed ffmpeg and fail with all the settings.
If the track is stereo, Tracks > Stereo Track to Mono.
Set Project Rate bottom left to 8000 Hz.
File > Export Audio... then choose "Other uncompressed files".
Click Options.... .
Header should be "WAV (Microsoft)".
Encoding should be "U-Law". U-Law sets the 8-bit depth. Together with specifying 8000 Hz as above, this now gives you 64 kbps (bit rate of uncompressed files is bit depth * number of channels * sample rate).
Gale
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