This directory contains a utility application that uses the AudioCapturer interface and the WavWriter class to record a waveform audio file.
wav_recorder [options] <filename>
Record an audio signal from the specified source, to a .wav file.
Valid options:
By default, use the preferred input device
--loopback Capture final-mix output from the preferred output device
By default, use device-preferred channel count and frame rate, in 32-bit float samples
--chans=<NUM_CHANS> Specify the number of channels (in [1, 8])
--rate=<FRAME_RATE> Specify the capture frame rate (Hz in [1000, 192000])
--int24 Record and save as left-justified 24-in-32 int ('padded-24')
--packed24 Record as 24-in-32 'padded-24'; save as 'packed-24'
--int16 Record and save as 16-bit integer
By default, don't set AudioCapturer gain and mute (unity 0 dB, unmuted)
--gain[=<GAIN_DB>] Set stream gain (dB in [-160, +24]; 0.0 if only '--gain' is provided)
--mute[=<0|1>] Set stream mute (0=Unmute or 1=Mute; Mute if only '--mute' is provided)
By default, use packet-by-packet ('synchronous') mode
--async Capture using sequential-buffer ('asynchronous') mode
By default, capture audio using packets of 100.0 msec
--packet-ms=<MSECS> Specify the duration (in milliseconds) of each capture packet
Minimum packet duration is 1.0 milliseconds
--v Be verbose; display per-packet info
--help, --? Show this message