tinycap - captures audio from an audio device tinycap [ file ] [ options ] tinycap can record audio from an audio device to a wav file or standard output (as raw samples). Options can be used to specify various hardware parameters to open the PCM with.

-D card Card number of the PCM. The default is 0.

-d device Device number of the PCM. The default is 0.

-M Use memory-mapped I/O method. If this option is not specified, then read and write I/O method will be used.

-c channels Number of channels the PCM will have. The default is 2.

-r rate Number of frames per second of the PCM. The default is 48000.

-b bits Number of bits per sample the PCM will have. The default is 32.

-p period_size Number of frames in a period. The default is 1024.

-n periods Number of periods the PCM will have. The default is 4.

-t seconds Number of seconds to record audio.

When capturing audio, SIGINT will stop the recording and close the file.

tinycap output.wav Records a file called output.wav until an interrupt signal is caught.

tinycap output.wav -D 1 -t 2 Records a file called output.wav from card 1 for two seconds or until an interrupt signal is caught.

tinycap -- -t 3 Records to standard output for three seconds or until an interrupt signal is caught.

Please report bugs to https://github.com/tinyalsa/tinyalsa/issues. tinyplay(1), tinymix(1), tinypcminfo(1) Simon Wilson

For a complete list of authors, visit the project page at https://github.com/tinyalsa/tinyalsa.