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/*
ToneControls.cc
Copyright 2004-5 Tim Goetze <tim@quitte.de>
http://quitte.de/dsp/
4-way Eq for amplifier emulation plugins
*/
/*
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., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA or point your web browser to http://www.gnu.org.
*/
#include "basics.h"
#include <stdio.h>
#include "Amp.h"
PreampBand
ToneControls::bands[] =
{
/* f, Q, g */
{ 80, 1.20, 1.61},
{ 300, 1.10, 1.10},
{1200, 1.14, 1.07},
{4800, .80, 1.06}
};
void
ToneControls::init (double fs)
{
for (int i = 0; i < 4; ++i)
eq.init_band (i, 2 * bands[i].center * M_PI / fs, bands[i].Q);
}
double
ToneControls::get_band_gain (int i, double g)
{
return bands[i].adjust * DSP::db2lin (g);
}
void
ToneControls::set_band_gain (int i, float g)
{
/* sorry, _ != . but hardly readable -- the difference is between local
* buffered value and actual Eq band gain */
eq_gain[i] = g;
eq.gain[i] = get_band_gain (i, g);
}
void
ToneControls::activate (d_sample ** ports)
{
for (int i = 0; i < 4; ++i)
set_band_gain (i, *ports[i]);
eq.reset();
}
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