can we add filter program in speech recognition?

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actually when i give input through microphone it cannot react properly . other than silence it take everything as input so is it possible to add filter program in speech recognition? and if yes then how?

Posted 23-Apr-12 3:25am

crisppy

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Sergey Alexandrovich Kryukov 23-Apr-12 13:45pm

Good question so I up-voted it with my 4 -- you should explain it more clearly. Are you looking for recognition activated by sound?
--SA

crisppy 24-Apr-12 2:43am

yeah...
thanks for ur reply

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Bernhard Hiller · Answer 1 · 2012-04-23T21:59:00

The simplest way is to look for a threshold value: if the volume is below that value, send zeros to your speech recognition engine.
More complicated is noise filtering. You'll have to do a Fast Fourier transformation of original audio data, compare them with Fast Fourier transformed noise data, and remove/reduce corresponding frequencies.
Actually, a good noise-cancelling microphone can help a lot.