Recording WAVE '/dev/null' : Signed 32 bit Little Endian, Rate 44000 Hz, Stereo
Hardware PCM card 0 'Audiotrak Prodigy 7.1' device 0 subdevice 0

Its setup is:
stream       : CAPTURE
access       : RW_INTERLEAVED
format       : S32_LE
subformat    : STD
channels     : 2
rate         : 44100
exact rate   : 44100 (44100/1)
msbits       : 24
buffer_size  : 22050
period_size  : 5513
period_time  : 125011
tick_time    : 10000
tstamp_mode  : NONE
period_step  : 1
sleep_min    : 0
avail_min    : 5513
xfer_align   : 5513
start_threshold  : 1
stop_threshold   : 22050
silence_threshold: 0
silence_size : 0
boundary     : 1445068800
Aborted by signal Interrupt...