Heil Sound in / near St. Louis, MO. may have what you are after. They bought out a DSP speaker maker and revamped the design a year or two ago.
73 de Lowell K9LDW
------ Original Message ------ Received: Thu, 05 Apr 2007 01:52:50 PM CDT From: n3wwn@futuretek.cx To: amsat-bb@amsat.org Subject: [amsat-bb] Re: DSP Speaker
This doesn't ring a bell with anyone?
Maybe I dreamed it! hi hi
73 de Rich N3WWN
On Thu, 29 Mar 2007, n3wwn@futuretek.cx wrote:
Hi!
I recall reading about a speaker that you can plug into any radio so you can keep the squelch open all the time and a DSP will only let audio with signals through.
It was intended to be used to listen for beacons on satellites as well as listen for band openings without driving the XYL crazy with static being blasted through the house.
Does anyone else recall this speaker (or inline module)? I've searched and found DSPs that will attenuate white noise, but I haven't seen any that turn off the speaker completely in the presence of white noise
alone.
73 de Rich N3WWN _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite
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Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb