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Chapter 11. Audio Restoration > Reducing Noise and Hiss

Reducing Noise and Hiss

The noise-and hiss-reduction tools in Audition perform similar tasks: they remove unwanted noise from your audio. Examples of such noise include tape hiss (from cassettes or any other tape source), turntable-motor rumble, hum, microphone noise, amplifier buzzing, and any other extraneous noise that gets in the way of clean, clear audio.

The primary difference between the Noise Reduction and Hiss Reduction tools is that the former can reduce broadband background noise that extends across a wide frequency range, while the latter targets noise that falls below a particular amplitude threshold (called the noise floor), leaving other frequencies unaffected.


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