Play sound files using the ALSA sound system. The related arecord records sound files.
Use n channels: 1 for mono, 2 for stereo.
Set an interrupt for n seconds after playback begins.
Select a PCM device by name.
Specify the sample format. The sample formats available will depend on hardware. For CD and DAT output, use the cd and dat shortcuts, which set the sample rate, format, and channel numbers all at once.
Print help message, then exit.
List available sound cards and digital audio devices.
List all PCM (pulse-coded modulation, or digital audio) devices that have been defined. PCMs may be defined in the .asoundrc file.
Run quietly. Do not display messages.
Set the sample rate in Hertz. The default is 8000 Hertz.
Set the minimum number of ticks to sleep. The default is not to sleep.
Name the file type used. Files may be voc, wav, raw, or au.
Print version and quit.