Re: LF: Re: Clipping or blanking/9kHz intermods

[Wolfgang Büscher <dl4yhf@freenet.de>]

Hello Peter,

you wrote:
> Interesting that "clipper" function. What algorithm are you using and at
> which "average" time/frequency window(s)?
>
>   
There are two algorithms, a hard limiter (simple clipper) and a 
noiseblanker. Fot the clipper, the average (of the signal power) uses a 
simple lowpass filter with a time constant of a few seconds.
I uloaded the algorithms as C / C++ sourcecodes, with a few toughts from 
Markus DF6NM and myself in the comment fields - this may actually be 
more interesting than the implementation itself (in the module 
noiseblanker.cpp). The zipped sourcecode archive is here:
http://www.qsl.net/dl4yhf/speclab/noiseblanker_and_clipper_algo.zip

All the best,
73,  Wolf .