We use DM8168, DVRRDK 03.00.00.00 based software stack and Udworks based hardware design.
We try to record Audio from TLV320AIC3101. 2 single channels must be captured - not in Stereo - every channel in Mono.
I setup capture input with amixer:
amixer sset 'Left Line1L Mux' single-ended
amixer sset 'Right Line1R Mux' single-ended
amixer sset 'Right PGA Mixer Mic3L' off
amixer sset 'Right PGA Mixer Mic3R' off
amixer sset 'Left PGA Mixer Mic3L' off
amixer sset 'Left PGA Mixer Mic3R' off
I try capture with ALSA util:
arecord -f S16_LE -r 8000 -t raw --device=plughw:0,1 --channels=1 --separate-channels /mnt/sd1/ALSA1.pcm /mnt/sd1/ALSA2.pcm
The following problem occurs: The first file contains a mix of left and right channel the second file is OK it only contains one channel.
How can I achive single channel capture, does TLV320AIC3101 generally support the "splitting" of the stereo channel ?