root@azeem-:/download/home/root# arecord --device=plughw:0,0 --format S16_LE --rate 16000 -c1 --duration=20 test_16K.wav -v
Recording WAVE 'test_16K.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono
Plug PCM: Rate conversion PCM (11025, sformat=S16_LE)
Converter: libspeex (external)
Protocol version: 10002
Its setup is:
  stream       : CAPTURE
  access       : RW_INTERLEAVED
  format       : S16_LE
  subformat    : STD
  channels     : 1
  rate         : 16000
  exact rate   : 16000 (16000/1)
  msbits       : 16
  buffer_size  : 7999
  period_size  : 1999
  period_time  : 124988
  tstamp_mode  : NONE
  tstamp_type  : MONOTONIC
  period_step  : 1
  avail_min    : 1999
  period_event : 0
  start_threshold  : 1
  stop_threshold   : 7999
  silence_threshold: 0
  silence_size : 0
  boundary     : 2096889856
Slave: Route conversion PCM (sformat=S16_LE)
  Transformation table:
    0 <- 0*0.5 + 1*0.5
Its setup is:
  stream       : CAPTURE
  access       : MMAP_INTERLEAVED
  format       : S16_LE
  subformat    : STD
  channels     : 1
  rate         : 11025
  exact rate   : 11025 (11025/1)
  msbits       : 16
  buffer_size  : 5512
  period_size  : 1378
  period_time  : 124988
  tstamp_mode  : NONE
  tstamp_type  : MONOTONIC
  period_step  : 1
  avail_min    : 1378
  period_event : 0
  start_threshold  : 1
  stop_threshold   : 5512
  silence_threshold: 0
  silence_size : 0
  boundary     : 1444937728
Slave: Hardware PCM card 0 'PLAYERU' device 0 subdevice 0
Its setup is:
  stream       : CAPTURE
  access       : MMAP_INTERLEAVED
  format       : S16_LE
  subformat    : STD
  channels     : 2
  rate         : 11025
  exact rate   : 11025 (11025/1)
  msbits       : 16
  buffer_size  : 5512
  period_size  : 1378
  period_time  : 124988
  tstamp_mode  : NONE
  tstamp_type  : MONOTONIC
  period_step  : 1
  avail_min    : 1378
  period_event : 0
  start_threshold  : 1
  stop_threshold   : 5512
  silence_threshold: 0
  silence_size : 0
  boundary     : 1444937728
  appl_ptr     : 0
  hw_ptr       : 0
overrun!!! (at least 6.604 ms long)
Status:
  state       : XRUN
  trigger_time: 416.581207132
  tstamp      : 0.000000
  delay       : 2002
  avail       : 5997
  avail_max   : 7996
overrun!!! (at least 6.759 ms long)
Status:
  state       : XRUN
  trigger_time: 416.897735465
  tstamp      : 0.000000
  delay       : 2002
  avail       : 5997
  avail_max   : 7996
overrun!!! (at least 7.137 ms long)
Status:
  state       : XRUN
  trigger_time: 417.214377965
  tstamp      : 0.000000
  delay       : 2002
  avail       : 5997
  avail_max   : 7996
overrun!!! (at least 6.548 ms long)
Status:
  state       : XRUN
  trigger_time: 417.531381757
  tstamp      : 0.000000
  delay       : 2002
  avail       : 5997
  avail_max   : 7996
root@azeem-:/download/home/root