how to filter ambient background noise from a recorded speech signal?

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Shadi Ayyad 2016-3-2

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评论： Walter Roberson 2016-3-4

Hello everybody, I have a .wav file containing a conversation between two persons and there is a lot of noisy sound around them (classical music and trickling water). Is there an efficient method that keeps this conversation noiseless.

Would you please help me?

Thanks in advance.

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Shadi Ayyad 2016-3-4

Is there an efficient bandpass filter that keeps only speech in a .wav signal?

Walter Roberson 2016-3-4

No there is not.

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Walter Roberson 2016-3-2

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No, there is no efficient way.

However, you can filter the speech with a band pass filter from about 330 Hz to 4000 Hz and that will provide a start.

http://www.eetimes.com/author.asp?section_id=36&doc_id=1328589

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Shadi Ayyad 2016-3-2

so the range u gave me [330-4000Hz] does not work.. is there any thing to try.. I will send you a figure concerning the spectrum of the wav signal that I have.

Shadi Ayyad 2016-3-2