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Re: [Discuss-gnuradio] Problem with 192KHz sampling rate on alsa source
From: |
ikjtel |
Subject: |
Re: [Discuss-gnuradio] Problem with 192KHz sampling rate on alsa source |
Date: |
Tue, 28 Dec 2010 17:24:42 -0800 (PST) |
Hello Marcus
Have you tried using the native 'arecord' command ?
This may help isolate whether it's in GR's audio source or what...
Also look within 'alsamixer' for any odd little switches etc
Also, there's a possibility that 192K might only be supported with restrictions
(mono only or s-INT16 only or something)...
Additionally, try the 96K rate to see if at least it will go that high.
I've also seen other weird things with sound cards such as a 90 degree phase
delay between the two channels - with the same exact signal connected to both L
and R inputs.
> Do I have to do anything special to pulseaudio configuration
> to get support for the 192KHz rate?
Not experienced with pulseaudio, but it appears to be a userspace tool - as is
GR - suggest that you initially bypass/disable it entirely to prove/disprove
whether 192k works natively (or not) first......
Best Regards
Max
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