Description:
Introduce dithering noise to mask quantization artefacts when reducing bit depth.
Adds a small amount of noise to the signal in order to mask audible quantization effects that can occur if the output bit depth is less than 24 bits.
Note, that most noiseshape types are available only with 44100Hz sample rate.
The most likely use for <auto-mode> is when applying fade in or out to an already dithered file, so that the redithering applies only to the faded portions.
However, auto dithering is not fool-proof, so the fades should be carefully checked for any noise modulation.
This effect cannot be followed by any other sox-effect.
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