Audio Recording

The o1k_audrec program is a command-line driven tool for recording audio to a file.

The following shows the command-line syntax for the olk_audrec example:

hostname% o1k_audrec options -o filename

The following table describes command options and the default setting.

Table 4-2 o1k_audrec Options


Options	Description and Values	Default
`-D` device	Device name	`/dev/o1k0`
`-f` format	Encoding format (0=ULAW, 1=ALAW, 2=PCM8, 3=PCM16, 4=G722)	`0`
`-r` rate	Sample rate (8000, 11025, 16000, 22050)	`8000`
`-c` channel	Channels (1, 2)	`1`
`-p` port	Input port (0=LINE, 1=MIC)	`0`
`-g` gain	Input gain (0 .. 1.0)	`.125`
`-m` mgain	Monitor gain (0 .. 1.0)	`0`
`-I` information	Audio file string information	`""`
`-b` size	Buffer size	`1000`
`-h` amount	Print hash marks after amount	`0`