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Amplify Background noise


laydon
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Is it possible to increase the volume of certain noises if you separate the same audio file into multiple tracks, edit them and merge them together to get a louder background noise and a lower foreground noise.

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If you are referring to recorded noises, the answer is no. First, how would you separate the audio into multiple tracks? Second, duplicated audio on multiple tracks is additive; both "background" and "foreground" are added identically. You could offset two identical tracks and the identical audio will be shifted in phase depending on the offset and frequency; a 1 millisecond offset will cause a 360 degree rotation at 1 kHz and thus a comb filter with a 1 kHz interval between notches, e.g., 0.5, 1.5, 2.5, ...

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