Re: [HCDX]: PC sound processing : cooledit

["Zacharias Liangas" <zliangas@xxxxxxxxxxxx>]

There is also another very good idea with the program Cool edit 
if you aleady have made any signals first recorded in tape 

Cooledit  can cancel out at a degree ( how to say this?) soem background noise provided  
at first you sample out part of background noise then cancel it out 

Cooledit with its spectrum analyzer facility you can also have a graph  containing  your 
audio spectrum (also real time in case you play it from the program) and have at same 
time a modulation index and  see at same time any QRM  that might exist in the 
predetermined audio band 

If someone has any questions ( more particularly  for the spectrum analyzer) on how to do 
it please let me know . For the moment part of this idea is on theoretical basis ( did 
not try) but i m sure for the results  

I have used this progarm  to cancel our background (tape)  hiss  from a very low lelvel 
recording and many times to use it as a means to make MP3 s from Hf  recoirded songs ( by 
enhancing  the higher freqincies) 

Exceopt this  Cooledit is very good  with its FFT techniques  to  notch , peak ,distort 
any audio ( and much more) 
More on this program on Syntrillium site 
----



> Guido
> 
> I've been trying DSP software on some old DX recordings.  The two
> programs I've tried are DARTpro32 (http://www.dartpro.com) and Pristine
> Sounds (http://www.pristinesounds.com).  Both are loaded with audio
> processing features and sell for about $100US.  You can download
> shareware versions from their web sites, the evaluation versions limit
> you to 30 seconds per recording but you can try most of the other
> features.
> 
> Both programs are good at improving the subjective listening quality of
> the recordings, in terms of reducing tape hiss, adjacent channel
> interference, atmospheric noise, and possibly electrical noise. 
> However, you have to experiment with the settings many times before you
> get decent results (it's a lot easier to make a recording sound worse
> than it is to make it sound better!)  Although the programs do make the
> recordings sound "cleaner", I've found very little improvement in
> readability.  Sometimes there's a word or two I wasn't sure about that's
> now distinct, but that's about it.  
> 
> Bruce 
> 
> Guido Schotmans wrote:
> > 
> > I have been trying some DSP and sound processing tools on a recording from
> > Radio Vanuatu I made in early December.  It was a very noisy recording from
> > which I could understand nothing.  I've ID'ed them only from the 'yellow
> > bird call'.  I thought that it would be possible to do some sound processing
> > on it to make it more or less understandable. But the only result was that I
> > could make it sound in many different ways, but not in such a way that it
> > became better understandable.  Has anybody ever managed to clear up a
> > DX-catch by sound processing ?
> > 
> > I tried the following stuff.
> > 
> > Software:  Chroma Sound
> > http://www.siliconpixels.com
> > 
> > Swezey DSP
> > http://www.winternet.com/~swezeyt/dsp.htm
> > 
> > and
> > 
> > CoolEdit
> > http://www.syntrillium.com/cep/prodemo.htm.
> > 
> > * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> > Guido Schotmans - Editor-in-Chief - DX-Antwerp, BELGIUM
> > e-mail : gs@xxxxxx
> > Narrow FM Homepage http://gallery.uunet.be/gs/
> > * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> > ------------------------------------------------------------------------
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> > or email Risto Kotalampi, risto@xxxxxxxxxxxxxx
> > ------------------------------------------------------------------------
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> This is a message from Bruce Portzer <bportzer@xxxxxxxx>
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> 

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This is a message from "Zacharias Liangas" <zliangas@xxxxxxxxxxxx>
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