RE: Raspberry Pi and Karaoke Machine (Wolfson Pi Use and its Limitation)

e14 Contributor — Fri, 18 Apr 2014 21:48:08 GMT

Hi!

I don’t know why wolfson pi don’t record 8000Hz or 16000Hz sample rate audio format

Those limitations crept in by mistake. This post explains:Re: PJSIP/PJSUA with Wolfson audio card

Unable to record 8000Hz/16000Hz sample rate format audio.

Unable to record 8-Bit audio format.

Unable to run 2 or more sound application using wolfson pi at the same time. (So definitely when I use it in karaoke either I hear music or I can loop back my voice).
Getting error resource or device busy when using 2 sound instances at same time.

You could try my .asoundrc.

Save this script as /home/pi/.asoundrc (make a copy of the original first, just to be safe).

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You should now be able to record at 8000 and 16000 and in 8 bit in both mono and stereo, using the "default" device.

Ragnar