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Reply-To: "fred bartoli"
From: "fred bartoli"
Subject: Re: Acoustic Feedback reduction
Date: Fri, 10 Jan 2003 20:15:17 +0100
X-Newsreader: Microsoft Outlook Express 5.00.2314.1300
Organization: Guest of ProXad - France
NNTP-Posting-Date: 10 Jan 2003 20:15:04 MET
Spehro Pefhany a écrit dans le message :
> Many years ago in good old _Wireless World_ (long before "wireless"
> acquired its present meaning(s)) there was a design published for a
> device used to allow higher volume levels in PA systems before
> feedback occurred (with a given microphone). IIRC, they used
> one or two multipliers in a circuit that shifted the audio pitch by
> around 10Hz.
> Has this sort of thing been integrated into a single chip?
Why not make it digitally ?
Should fit easily in a small uc. With maybe internal 10/12b ADC+DAC.
Not really a big deal.
> Best regards,
> Spehro Pefhany
> "it's the network..." "The Journey is the reward"
> firstname.lastname@example.org Info for manufacturers:
> Embedded software/hardware/analog Info for designers:
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