Edit wav files with Audacity - How do I edit voice prompts

Audacity is a good free audio editor.  Note that it's a third-party program, and not something that we support.  Please see the Audacity help page if you need further assistance.

These tips are written for Audacity 1.3 beta.

Voice prompts > making .WAV files work on your PBX (voice prompts)

Initial configuration after Audacity is installed:

1. Go to Edit -> Preferences -> Quality, and set the "Default Sample Rate" to "8000 Hz".

2. Change the "Default Sample Format" to "16-bit".  Click OK.

Editing the audio file:

Open

1. Load up one of your audio files.

2. Make sure that "Project Rate", at the lower left corner, is set to "8000" Hz, as shown in the screenshot.

3. If your file is already "Mono, 8000Hz, 16-bit PCM", skip ahead to step 6.

4. As shown in the screenshot, click on the black down arrow/triangle.  Make sure "Set Sample Format" is "16-bit PCM".

5. Verify that "Set Rate" is at "8000 Hz". *

6. Stereo is not supported; the file must be monaural.  Select Tracks -> Stereo Track to Mono.

7. Go to File -> Export.

8. You can leave the ID tag information blank and click OK; it's not important.

9. Change "Save as type" to "WAV (Microsoft) signed 16 bit PCM".  Then save.

• - Audacity 1.3 should automatically speed up the file.  However, if it plays slowly, you can change it under Effect -> Change Speed.  Figure out how many time 8 (KHz) divides into 44 (KHz), for example, and speed it up by that percentage.

Getting help

This is very un-supported - Fonality will not be able to assist in transcoding, editing, or adjusting your wav or gsm files, using the Audacity audio editor, nor troubleshoot any problems with editing the files.

See the Audacity help page for further assistance.

References

How to edit mp3 files with Audacity

Audacity Help page -official