marco@fox:/usr/share/sounds/alsa$ aplay --verbose --file-type=raw --duration=15 --channels=2 --disable-resample --disable-channels --disable-format --disable-softvol --test-position --dump-hw-params --format=S24_3LE --rate=44100 --device=hw:R8,0 /dev/zero
Wiedergabe: Rohdaten '/dev/zero' : Signed 24 bit Little Endian in 3bytes, Rate: 44100 Hz, stereo
HW Params of device "hw:R8,0":
--------------------
ACCESS:  MMAP_INTERLEAVED RW_INTERLEAVED
FORMAT:  S24_3LE
SUBFORMAT:  STD
SAMPLE_BITS: 24
FRAME_BITS: 48
CHANNELS: 2
RATE: [44100 96000]
PERIOD_TIME: [1000 1981429)
PERIOD_SIZE: [45 87381]
PERIOD_BYTES: [270 524286]
PERIODS: [2 1024]
BUFFER_TIME: (937 3962858)
BUFFER_SIZE: [90 174762]
BUFFER_BYTES: [540 1048572]
TICK_TIME: ALL
--------------------
Hardware PCM card 4 'ZOOM R8' device 0 subdevice 0
Its setup is:
  stream       : PLAYBACK
  access       : RW_INTERLEAVED
  format       : S24_3LE
  subformat    : STD
  channels     : 2
  rate         : 44100
  exact rate   : 44100 (44100/1)
  msbits       : 24
  buffer_size  : 22050
  period_size  : 5513
  period_time  : 125011
  tstamp_mode  : NONE
  tstamp_type  : MONOTONIC
  period_step  : 1
  avail_min    : 5513
  period_event : 0
  start_threshold  : 22050
  stop_threshold   : 22050
  silence_threshold: 0
  silence_size : 0
  boundary     : 6206523236469964800
  appl_ptr     : 0
  hw_ptr       : 0
BUFPOS: avg11713/10364 min5511/0 max22050/16760 (22050) (0:0/0)
BUFPOS: avg4266/18002 min38/0 max22050/22321 (22050) (0:0/0)
BUFPOS: avg2654/19648 min34/0 max22050/22325 (22050) (0:0/0)
BUFPOS: avg1931/20387 min30/0 max22050/22329 (22050) (0:0/0)
BUFPOS: avg1519/20807 min26/0 max22050/22333 (22050) (0:0/0)
BUFPOS: avg1253/21079 min22/0 max22050/22337 (22050) (0:0/0)
BUFPOS: avg1067/21269 min18/0 max22050/22341 (22050) (0:0/0)
BUFPOS: avg929/21410 min14/0 max22050/22345 (22050) (0:0/0)
BUFPOS: avg823/21515 min10/0 max22050/22346 (22050) (0:0/0)
BUFPOS: avg738/21597 min6/0 max22050/22346 (22050) (0:0/0)
BUFPOS: avg669/21664 min2/0 max22050/22346 (22050) (0:0/0)
BUFPOS: avg768/21564 min0/0 max22050/22346 (22050) (0:0/0)
BUFPOS: avg784/21549 min0/0 max22050/22346 (22050) (0:0/0)
BUFPOS: avg729/21606 min0/0 max22050/22346 (22050) (0:0/0)
BUFPOS: avg682/21655 min0/0 max22050/22346 (22050) (0:0/0)