What is Noise Reduction?
Removing unwanted background sound such as hiss, hum, air conditioning or traffic from a recording.
Tools analyse a sample of the noise and subtract it from the recording, or use machine learning to separate voice from background. Hum from electrical interference is removed with targeted filters.
Too much reduction makes voices sound thin or watery, so it is applied carefully — and recording in a quiet, treated space remains the best fix.
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