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Audio Postproduction for Digital Video by Jay Rose

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Chapter 16

Noise Reduction

Remember this:

You can often lower the level of perfectly steady, pitched noises (such as lamp dimmer buzz or camera whine) dramatically, and in some cases eliminate them entirely.

You usually can’t get rid of random or unpitched noises (such as traffic or preamp noise) without compromising dialog. The best you can do is make them less annoying.

Equalizers, expanders, and delays can also be effective noise reducers. Instructions and examples are in previous chapters.

It’s Not Really Noise Reduction

Today’s sophisticated software and expensive DSP-driven boxes do an amazing job of distinguishing random noise from speech and applying sneaky techniques to make the noise less objectionable.

But make no mistake; ...

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