[linux-audio-user] Jamin question - peak hold in spectrum display?

Jan Depner eviltwin69 at cableone.net
Tue Aug 3 19:34:12 EDT 2004


On Tue, 2004-08-03 at 17:30, Mark Knecht wrote:
> Jan Depner wrote:
> > Mark,
> > 
> > 	There is no peak hold on the HDEQ.  There is a peak on the Spectrum
> > display.  I have changed my own default peak color to dark blue so I can
> > see it more easily.  The default is yellow I think.
> > 
> > 	I have thought about the possibility of doing a slow fade on the HDEQ
> > display but it is very problematic.  I'm using the XOR graphics plane to
> > draw and erase the curves.  I haven't really done anything with a
> > partial erase in XOR so I'm not sure how to do it.  If I were working in
> > the normal graphics plane (like the rest of the display) it would be
> > easy.  The problem there is that it takes too long to redraw the entire
> > HDEQ display ten times a second.  If I get a clue on how to do the
> > partial erasure in XOR I'll look into it.
> > 
> > 
> > Jan
> 
> Jan,
>     Thanks for keeping it in mind for the future.
> 
>     This sort of stuff goes a long way toward driving you crazy. If you 
> play with Waves PAZ then you get used to stereo phase meters, peak/hold 
> stuff, all the goodies.
> 

	I've used Steve's phase (jellyfish/goniometer) meter before (in
meterbridge).  All you have to do is route the output of JAMin to it. 
Or you could route the input to it if you want.


>     While I'm sure not everyone can handle the CPU load, on my 3GHz 
> laptop Jamin is only running about 25% load when playing my wave files 
> using alsaplayer. I'd still need to add in a 2-channel HDD recorder to 
> write the output of Jamin (will you make a recommedation?)

	I have been told (but haven't tried it) that Audacity is now JACK
capable.  If you get it to work let me know.


Jan





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