Miscellany

root@cm-x270:~$ ./aplay -D hw:0,0  /usr/share/diag2020/sounds/bell.wav
Playing WAVE '/usr/share/diag2020/sounds/bell.wav' : Signed 16 bit Little Endian, Rate 22050 Hz, Mono
ALSA ERROR hw_params: set (CHANNELS)
           value = 1 : Invalid argument
ACCESS:  RW_INTERLEAVED
FORMAT:  S16_LE
SUBFORMAT:  STD
SAMPLE_BITS: 16
FRAME_BITS: 32
CHANNELS: 2
RATE: [8000 48000]
PERIOD_TIME: (166 255000]
PERIOD_SIZE: [8 2040]
PERIOD_BYTES: [32 8160]
PERIODS: [1 256]
BUFFER_TIME: (166 4096000]
BUFFER_SIZE: [8 32768]
BUFFER_BYTES: [32 131072]
TICK_TIME: 10000
aplay: set_params:905: Channels count non available