How to Accurately Extract Fundamental Frequency from Speech Signals?

[jishact]

what are the preprocessing steps to be performed on a speech signal in order to extract its fundamental frequency accurately? which sampling frequencies and cut off frequencies are to selected to get a better result?

 

[berkeman]

what are the preprocessing steps to be performed on a speech signal in order to extract its fundamental frequency accurately? which sampling frequencies and cut off frequencies are to selected to get a better result?

Welcome to the PF. Why don't you tell us what you know about this subject. What would be the advantages and disadvantages of using analog versus digital pre-processing? What would be a good mix of analog and digital technologies in the pre-processing subsystem?

And what the heck is the "fundamental frequency" of speech? Have you looked into the fundamentals of speech recognition to see what kind of processing is involved?

http://en.wikipedia.org/wiki/Speech_recognition

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