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I have one doubt regarding audio processing for noise reduction. Is there any free ware and share ware DLLs available for noise reduction in .wav audio files or any sample codes using c#, vb.net or vb?
SoX is a cross-platform command-line application that does audio manipulation. A quick check of the man page reveals that it can do noise reduction (see
noiseprofandnoisered).You can use
trimin combination withnoiseprofto choose a small clip of a larger audio file to use as the noise.