Build an Audio Compressor

Build an audio compressor.

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a = Import["ExampleData/rule30.wav"]

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AudioPlot[a, ImageSize -> Medium]

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Compute the RMS amplitude of the signal with a threshold of 0.02.

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amplitude = AudioBlockMap[Max[.02, Sqrt@Mean[#^2]] &, a, {.01, .005}]

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Compress the dynamic range of the signal.

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AudioNormalize[a/AudioGenerator[amplitude]]

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AudioNormalize[a/AudioGenerator[amplitude]]; AudioPlot[%, ImageSize -> Medium]

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