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Programming Windows®, Fifth Edition by Charles Petzold

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Waveform Audio

Waveform audio is the most utilized multimedia feature of Windows. The waveform audio facilities can capture sounds coming through a microphone, turn them into numbers, and store them in memory or on disk in waveform files with the extension .WAV. The sounds can then be played back.

Sound and Waveforms

Before plunging into the waveform audio API, it's important to have an understanding of the physics and perception of sound and the process by which sounds can get in and out of our computers.

Sound is vibration. The human body perceives sound as it changes the air pressure on our eardrums. A microphone can pick up these vibrations and translate them into electrical currents. Similarly, electrical currents can be sent to amplifiers and ...

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