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Subject: Re: Acoustic Feedback reduction
Organization: Nobody nowhere
X-Newsreader: Microsoft Outlook Express 6.00.2720.3000
Date: Sat, 11 Jan 2003 14:54:40 -0000
NNTP-Posting-Date: Sat, 11 Jan 2003 14:54:46 GMT
"Phil Allison" wrote in message
> "g0mem" wrote in message
> > > ** These units affect the sound quality MUCH more than a +4 Hz
> > > They can only notch a handfull of different frequencies. A frequency
> > > shifter can kill up to 2000 simultaneously with no change in tonal
> > quaility, no set up and no need to alter settings for room full or
> > It would cetainly be noticable with miked up acoustic instruments, e.g.
> > piano. People would here the piano itself and the piano +4Hz sharp
> > out of the PA system, it would sound horrible.
> ** Bull. You have not tried it and you do not know.
WRONG! I have tried it here!!!. And I know several professional musicians.
> The sound from the PA ought to be louder than the one from the
> piano and arrive earlier by many mS. No beats are heard in this case.
I have been involved in concerts in the past with acoustic instuments, and
the musicians can here the sound of their own
> > As Walter pointed out they notch out the offending feedback frequencies
> a couple of dB.
> ** The notches are much deeper that that since the peaks that cause
> them are more like 6 - 10 dB above the average. The peaks are caused by
> room acoustics too so you are destroying the direct sound to fix a problem
> in the reverberation.
> > Which has> much less affect on the tonal quality than listening to an
> instrument that's
> > SHARP or FLAT.
> ** Stupid remark. The whole performance is shifted. Nothing is flat
Not stupid. The professionals don't use pitch shifting, they use dynamically
tuned notch filters and graphic EQs for sound reinforcement.
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