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Subject: [digitalradio] Noise Reduction and the digital modes
Noise reduction on my old rig never did much. Now I have a new rig
the NR buttons actually appear to do some things. What about noise
reduction and the digital modes, is it really helpful? I did just
notice that with a Hell
Patrick Lindecker wrote:
Hello Andy and all,
I don't think NR must be a so good idea for digimodes. Because, it can
be seen as non-linear filter.
I disagree on the transfer function. It is an adaptive linear filter.
Since it does not mix two tones in the passband, it can't be nonlinear.
Message -
From: Robert McGwier
To: digitalradio@yahoogroups.com
Sent: Sunday, March 04, 2007 6:15 PM
Subject: Re: [digitalradio] Noise Reduction and the digital modes
Patrick Lindecker wrote:
Hello Andy and all,
I don't think NR must be a so good idea for digimodes. Because
Patrick Lindecker wrote:
Hello Robert,
TKS for the correction. I returned to my books. LMS filters are in
general linear (LMS-FIR), however they can also be in a recursive
structure (LMS-IIR).
Patrick, thanks for your reply. An IIR filter (with an FIR component
and a feedback
Noise reduction on my old rig never did much. Now I have a new rig
the NR buttons actually appear to do some things. What about noise
reduction and the digital modes, is it really helpful? I did just
notice that with a Hell QSO NR made the print more blurred. For other
modes I have not noticed
