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Formatting Audio Capture

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The following example uses capSetAudioFormat to set the audio format to 11-kHz PCM 8-bit, stereo.

WAVEFORMATEX wfex;

wfex.wFormatTag = WAVE_FORMAT_PCM;
wfex.nChannels = 2;                // Use stereo
wfex.nSamplesPerSec = 11025;
wfex.nAvgBytesPerSec = 22050;
wfex.nBlockAlign = 2;
wfex.wBitsPerSample = 8;
wfex.cbSize = 0;

capSetAudioFormat(hWndC, &wfex, sizeof(WAVEFORMATEX));