-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I was away at the weekend, therefore I can only reply today. > Try running this program: > http://download.atmark-techno.com/misc/demos/usb-audio-a500-howto/hw_params.c > Does it report one channel? ./hw_params PLAYBACK Device: hw:0 (type: HW) Access types: MMAP_INTERLEAVED RW_INTERLEAVED Formats: U8 S16_LE Channels: 1 2 Sample rates: 8000-48000 Interrupt interval: 5333-8192000 us Buffer time: 5333-8192000 us Device: hw:1 (type: HW) Access types: RW_INTERLEAVED Formats: S16_LE S24_LE S32_LE Channels: 2 Sample rates: 8000 11025 16000 22050 32000 44100 48000 64000 88200 96000 176400 192000 Interrupt interval: 20-8192000 us Buffer time: 41-16384000 us CAPTURE The external card HifiBerry is card 1 (device 0). The Device: hw:1 only reports "Channels: 2" (and not "Channels: 1 2"). This matches the error "Channels count non available" if I just run aplay -D hw:1,0 /usr/share/sounds/alsa/Front_Right.wav (as the mono file has just 1 channel [how can it actually have front and right information in just one channel?] but the card only supports 2) Naively I assumed that when using aplay -D plughw:1,0 /usr/share/sounds/alsa/Front_Right.wav the mono signal is split up in two identical signals that are then send two both channels. What can I do to make it work? Kind regards, Hauke -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlcT7YoACgkQjz8jfoq989dkHQCeLgjJN+r0UgsQzcnmcPnaz/2N G7cAn05nBkjKAFNkTH+U3DtB+h8HWZya =P0Yi -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
