Subject: Re: [linux-audio-user] Jamin question - peak hold in spectrum display?
From: Jan Depner (eviltwin69_AT_cableone.net)
Date: Wed Aug 04 2004 - 00:45:49 EEST
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
On Tue, 2004-08-03 at 13:35, Mark Knecht wrote:
> Hi,
> Does Jamin have any facility to do a peak hold display where a
> second curve is drawn and is made up of the peak values displayed in the
> faster, currently existing curve? If so, how do I turn it on? This is
> useful when you're trying to get an overall feeling for the energy
> across time instead of what's happening at a specific instant.
>
> Also, I don't see (but am probably missing) a way to set the decay
> speed of the display. Typical sort of fast (what's there now) medium and
> slow. Often the peak hold operates pretty close to the slow curve, or
> sticks around permanently until you do a reset by hand.
>
> FYI - right now the Gentoo version is 0.8.0 and there is an error
> message at startup about not finding lookahead_limiter_const_1906.so.
>
> I don't know about the sound yet but I must say that the basic tool
> compares pretty nicely to the Waves stuff I normally use. I'm currently
> mixing a CD and looking at using Jamin for my final version. Thanks for
> a nice tool.
>
> Thanks,
> Mark
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