[LAU] Gui for convolution engine (was: some news from KVRaudio)

[fons at kokkinizita.net]

On Tue, Dec 08, 2009 at 08:34:56PM +0100, Arnold Krille wrote:

> > A functional GUI.
> 
> Okay. But that should only apply when you change the mix-level or the IR, 
> either its parameters, which results in a re-calculation of the IR, or the 
> file. Both are probably not things you would automate inside a session. Unless 
> the position of the source is a parameter for a big artificial convolution to 
> simulate whole acoustic environments. I think most people just use an IR of 
> some nice room to have a hall-effect...

Actually the thing I'm still working on will provide
similar facities. I don't think they a luxury.
 
I attach two jconvolver config templates that will allow
using the reverbs provided in the Hybridreverb database
with jconvolver.

BTW, Christian Borss' convolution processor is really very
well designed. It uses some clever tricks to optimise the
2x2 and 2x4 cases with all convolutions having equal length.
Zita-convolver can't use such tricks as it is meant to be
general-purpose.

Ciao,


===============================================================================

hybridreverb-stereo.conf

#  -----------------------------------------------------------------------------
#
#  Copyright (C) 2009 Fons Adriaensen <fons at kokkinizita.net>
#  
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#  -----------------------------------------------------------------------------
#
#
# Jconvolver example configuration
# --------------------------------
#
#
# This configuration is a template for using the reverbs in
# the database provided with Christian Borss' Hybridreverb
# program.
#
# This template uses only the front L,R outputs. To create
# a config file for a specific reverb modify the /cd command
# below to point to the required directory, and if necessary
# adjust the 'maxsize' parameter. The latter will be necessary
# if you use the 'church' reverb. The minimum value required
# is the lenght (in samples) of the IRs which you can find e.g.
# using sndfile-info. 
#
# The reverbs in this database do include the direct (dry) sound,
# to remove this set the 'offset' parameter to e.g. 256.
#
#
#
# Replace by the path to the reverb you want to use.
#
/cd /audio/reverbs/hybridreverb-database/large_concert_hall/music/8m
#
#
#                in  out   partition    maxsize
# -----------------------------------------------
/convolver/new    2    2      256       120000
#
#
#              num   port name     connect to 
# -----------------------------------------------
/input/name     1     Input.L
/input/name     2     Input.R
#
/output/name    1     Output.FL
/output/name    2     Output.FR
#
#
#               in  out gain  delay  offset  length  chan      file  
#---------------------- --------------------------------------------------
/impulse/read    1   1    1     0      0       0      1      left_fl.wav
/impulse/read    1   2    1     0      0       0      1      left_fr.wav
/impulse/read    2   1    1     0      0       0      1      right_fl.wav
/impulse/read    2   2    1     0      0       0      1      right_fr.wav


===============================================================================

hybridreverb-surround.conf

#  -----------------------------------------------------------------------------
#
#  Copyright (C) 2009 Fons Adriaensen <fons at kokkinizita.net>
#  
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#  -----------------------------------------------------------------------------
#
#
# Jconvolver example configuration
# --------------------------------
#
# This configuration is a template for using the reverbs in
# the database provided with Christian Borss' Hybridreverb
# program.
#
# This template uses all four surround outputs. To create
# a config file for a specific reverb modify the /cd command
# below to point to the required directory, and if necessary
# adjust the 'maxsize' parameter. The latter will be necessary
# if you use the 'church' reverb. The minimum value required
# is the lenght (in samples) of the IRs which you can find e.g.
# using sndfile-info. 
#
# The reverbs in this database do include the direct (dry) sound,
# to remove this set the 'offset' parameter to e.g. 256.
#
#
#
# Replace by the path to the reverb you want to use.
#
/cd /audio/reverbs/hybridreverb-database/large_concert_hall/music/8m
#
#
#                in  out   partition    maxsize
# -----------------------------------------------
/convolver/new    2    4      256       120000
#
#
#              num   port name     connect to 
# -----------------------------------------------
/input/name     1     Input.L
/input/name     2     Input.R
#
/output/name    1     Output.FL
/output/name    2     Output.FR
/output/name    3     Output.SL
/output/name    4     Output.SR
#
#
#               in  out gain  delay  offset  length  chan      file  
#---------------------- --------------------------------------------------
/impulse/read    1   1    1     0      0       0      1      left_fl.wav
/impulse/read    1   2    1     0      0       0      1      left_fr.wav
/impulse/read    1   3    1     0      0       0      1      left_sl.wav
/impulse/read    1   4    1     0      0       0      1      left_sr.wav
/impulse/read    2   1    1     0      0       0      1      right_fl.wav
/impulse/read    2   2    1     0      0       0      1      right_fr.wav
/impulse/read    2   3    1     0      0       0      1      right_sl.wav
/impulse/read    2   4    1     0      0       0      1      right_sr.wav

===============================================================================

-- 
FA