23 Sep
2012
23 Sep
'12
10:48 p.m.
Hi,
On 23 September 2012 12:40, Fons Adriaensen <fons(a)linuxaudio.org> wrote:
On Sun, Sep 23, 2012 at 10:17:10AM -0700, Henner
Zeller wrote:
Thanks Fons, this is a good idea. Just the santalucia.wav is not very
high quality indeed (and needs heavy attenuation).
But if I understand the filter configuration right, I can't really
just use a gain of 1.0 with the dirac: I need to attenuate the
original signal so that there is enough 'room' for the SantaLucia
reverb to be added ... otherwise the output signal is clipped if
already close to 0dB.
So this is what I did now, essentially adding the original signal to
it with -8dB, the rest 'filled out' with the SantaLucia:
https://github.com/hzeller/folve/blob/master/demo-filters/SantaLucia/filter…
(Change from before:
https://github.com/hzeller/folve/commit/d629c8899d39b96650708fc6b46e5369681…
)
ciao,
-henner
The latest version now contains a simple
highpass- and lowpass-filter
to test out the configuration. And a description how to get the Santa
Lucia Basilica reverb example from the jconvolver demo distribution.
Be careful when using the Santa Lucia IR. It's the recording of a
gunshot, so the direct sound is a) clipped and b) low-fi. The file
that comes with jconvolver cuts of the direct (dry) sound for that
reason, assuming the normal signal path through a mixer will add it.
In this case it has to be added to the IR. You need something like
# in out gain delay offset length chan file
#------------------------------------------------------------------------
/impulse/read 1 1 0.1 1400 1400 0 1 santalucia.wav
/impulse/read 2 2 0.1 1400 1400 0 2 santalucia.wav
/impulse/dirac 1 1 1 0
/impulse/dirac 2 2 1 0
The ratio of the 'gain' parameters determines the wet/dry ratio.
You can use this at either 44.1 or 48 kHz, the only difference
will be a slightly different (10%) reverb time.
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)