🚀 go-pugleaf

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! *