Re: [LAU] correct jconvolver matrix gain for convolution reverb?

From: Fons Adriaensen <fons@email-addr-hidden>
Date: Thu Jan 31 2013 - 14:40:32 EET

On Thu, Jan 31, 2013 at 02:02:26AM +0100, Jörn Nettingsmeier wrote:
 
> i would like to start with the "correct" reverb level and go from there.
> the initial (peak) normalisation was done in ardour. maybe i should
> have normalized the initial impulse area to unit energy rather than
> the highest peak to unit amplitude, but i'm not quite sure how to
> accomplish that. the normalization feature in aliki doesn't seem to
> do anything, or i'm misunderstanding something.

Not normalise, select the W channel only, zoom in on the direct sound
and put a marker on it. The other marker should be off. Shift-L-click
on the Gain/Norm button. The will normalise the energy in a short region
around the marker.

Now since is this W, the level should actually be 3 dB lower. So set the
gain to 0.71 * the displayed value, and L-click on Gain/Norm. Then remove
the direct sound etc.

Ciao,

-- 
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/listinfo/linux-audio-user
Received on Thu Jan 31 16:15:02 2013

This archive was generated by hypermail 2.1.8 : Thu Jan 31 2013 - 16:15:02 EET