I've been working through the .asoundrc documentation and have found several errors.
Thanks for the detailed report.
I have fixed the obvious errors but I'm not sure what the problem is with the rate_convert example. I have left it as is for now.
------------------------------------------------------ 3. The rate conversion plug documentation (or code?) is broken.
I'm not sure if this is a documentation bug or a driver/alsa-lib bug.
My .asoundrc at this point closely follows the documentation (with corrections as noted in bug#2) and looks like:
pcm.ac97 { type hw card 0 device 0 }
pcm_slave.sl2 { pcm ac97 rate 44100 }
pcm.rate_convert { type rate slave sl2 }
The documentation says: "Now you can call this newly created virtual device by: aplay -D
rate_convert test.wav"
But when I try that, I get this error:
Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo aplay: set_params:805: Broken configuration for this PCM: no configurations available
Note that "aplay -D ac97 test.wav" works, but plays too fast (at 48000), and gives the warning "please, try the plug plugin (-Dplug:ac97)". If I do that, it works perfectly.
So I think the documentation is wrong, or at least incomplete, or rate conversion does not work.
-- Patrick Shirkey - Boost Hardware Ltd. Http://www.boosthardware.com Http://www.djcj.org - The Linux Audio Users guide ========================================
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By P. MITCHELL PROTHERO Published 11/21/2003 11:13 AM
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