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- Newsgroups: comp.dsp
- Path: sparky!uunet!utcsri!torn!newshost.uwo.ca!gfx.engga.uwo.ca!rcook
- From: rcook@gfx.engga.uwo.ca (Richard Cook)
- Subject: Re: Speech detection/processing in presence of noise
- Organization: University of Western Ontario, London
- Date: Wed, 19 Aug 1992 19:05:05 GMT
- Message-ID: <1992Aug19.190505.25624@julian.uwo.ca>
- References: <1992Aug19.152249.1929@news.acns.nwu.edu>
- Sender: news@julian.uwo.ca (USENET News System)
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- In article <1992Aug19.152249.1929@news.acns.nwu.edu> tilden@casbah.acns.nwu.edu (Robert Tilden) writes:
- >Hi,
- > I'm looking for references, suggestions and the like for extracting
- >speech from background noise. As a side issue, I'm also interested in
- >methods for detecting the presence of speech in an audio signal. I intend
- >to perform some level of audio processing of shortwave signals.
- >
- >Thanks,
- > Bob tilden@nuhepl.phys.nwu.edu
-
- Hello Bob,
-
- I have been working at improving on a system to track a signal that
- contains noise. The work that we have started with is:
-
- Selfperturbing Recursive Least Squares Algorithm with Fast Tracking
- Capability, by D.J. Park and B.E. Jun, in ELECTRONICS LETTERS,
- 12th March 1992, Vol. 28 No. 6.
-
- The idea is to estimate the input signal using a 10 term filter.
- The system does not seem to react well to larger noise levels and
- we are working on improving it in this area.
-
- I don't think that this would help to seperate voice and music, but
- we hope it will remove background and machine noise of any gain
- from the voice/music signals.
-
- The above reference is a good starting point. I do not know what
- we are going to do with our findings yet but the summer job ends
- Sept. 1st.
-
- Good luck,
-
- Richard
-
- --
- Adult Children of Alcoholics: God, grant me the serenity to accept
- the things we cannot change, the courage to change the things we
- can, and the wisdom to know the difference.
- * Help break the chain; become aware and educate others! *
-