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Old February 11th 07, 10:21 PM posted to rec.radio.shortwave
Steve Steve is offline
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First recorded activity by RadioBanter: Jul 2006
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Default DSP noise reduction

On Feb 9, 4:18 pm, Ron Hardin wrote:
Steve wrote:

When it comes to DSP noise reduction, is there anything around
nowadays that can better one of the old Clearspeech base units?


I haven't seen anything since those old Amcom Inc devices (I have
three of them - they're great also for cleaning up microphone output of
outdoor noise, to bring out (say) birds, and suppress traffic.)

If you have certain kinds of noise, the Timewave 599zx is okay;
a nice AGC, brickwall filters (perfect for SSB where an interfering
SSB station is offset in the direction of the sideband), but general
nonlinear noise reduction it's inferior to clearspeech. Timewave for
linear filtering, Amcom for nonlinear, I guess is the breakdown.

Heil Sound had a really wretched implementation of clearspeech
after Amcom left, but some people claim to like it. I think there
was some huge engineering error in it though, feedback, very little
audio, and so forth. It sits in my junk box.
--
Ron Hardin


On the internet, nobody knows you're a jerk.


I was just on the Universal website and noticed that, in addition to
the GAP "Hear It" speaker, there's also a GAP inline module for sale.
I don't recall seeing the inline module before. Has anyone used it? I
wonder how it compares to the Clearspeech.

Steve