From: Spehro Pefhany
Subject: Re: Acoustic Feedback reduction
References: <email@example.com> <firstname.lastname@example.org>
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Date: Fri, 10 Jan 2003 21:08:05 GMT
NNTP-Posting-Date: Fri, 10 Jan 2003 16:08:05 EST
On Fri, 10 Jan 2003 12:55:55 -0800, the renowned "Walter Harley"
>"Frank Bemelman" wrote in message
>> The most effective way to attack this problem is (imo) using a good
>> microphone, with good direction characteristics. Or this should be
>> at least the first thing to take care of.
>AMEN!! And appropriate speakers come right after that. Many years ago I
>owned some lightweight PA cabinets that radiated a lot of energy from the
>sides around 200-400Hz. Curiously (not), I had a lot of problems with
>feedback at those frequencies... Thankfully they eventually got stolen, and
>the PA cabs I use now (like most modern designs) are very clean in terms of
>Of course, we don't know what Spehro's application is; this may be
>irrelevant if, e.g., he's thinking about cell phones.
I'm mostly curious about whether the frequency shift method has been
The application that sparked the inquiry is for an amplified telephone
for a very hard-of-hearing person, so a kind of big hearing aid with
painfully loud output at the receiver. I'll certainly pass along the
good ideas that have been brought up here.
"it's the network..." "The Journey is the reward"
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