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Steve February 9th 07 06:07 PM

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


**THE-RFI-EMI-GUY** February 9th 07 07:34 PM

DSP noise reduction
 
Look at the Timewave DSP599zx

Steve wrote:

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




--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"©

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" ;-P


Ron Hardin February 9th 07 09:18 PM

DSP noise reduction
 
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.

Steve February 11th 07 10:21 PM

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


Steve February 11th 07 10:22 PM

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.


Here's a link: http://www.rffun.com/catalog/filters/4048.html



Ron Hardin February 11th 07 10:33 PM

DSP noise reduction
 
Steve wrote:
Here's a link: http://www.rffun.com/catalog/filters/4048.html


``This device requires 12 to 24 VDC at 500 ma. It is supplied
with a mini to mini (3.5mm to 3.5mm) audio cable and fused power
lead.''

There's a disaster waiting to happen.

--
Ron Hardin


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


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