tal-reverb-2-juce/src/Engine/TalEq.h

   1 /*
   2         ==============================================================================
   3         This file is part of Tal-Reverb by Patrick Kunz.
   4
   5         Copyright(c) 2005-2009 Patrick Kunz, TAL
   6         Togu Audio Line, Inc.
   7         http://kunz.corrupt.ch
   8
   9         This file may be licensed under the terms of of the
  10         GNU General Public License Version 2 (the ``GPL'').
  11
  12         Software distributed under the License is distributed
  13         on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
  14         express or implied. See the GPL for the specific language
  15         governing rights and limitations.
  16
  17         You should have received a copy of the GPL along with this
  18         program. If not, go to http://www.gnu.org/licenses/gpl.html
  19         or write to the Free Software Foundation, Inc.,
  20         51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21         ==============================================================================
  22  */
  23
  24
  25 #if !defined(__TalEq_h)
  26 #define __TalEq_h
  27
  28 #include "HighShelf.h"
  29 #include "LowShelf.h"
  30 #include "PeakEq.h"
  31
  32 class TalEq
  33 {
  34 private:
  35         HighShelf *highShelf;
  36         LowShelf *lowShelf;
  37         PeakEq *peakEq;
  38
  39         float lowShelfGain;
  40         float highShelfGain;
  41
  42         float lowShelfFrequency;
  43         float highShelfFrequency;
  44
  45         float peakFrequency;
  46         float peakGain;
  47
  48         AudioUtils audioUtils;
  49
  50 public:
  51         TalEq(float sampleRate)
  52         {
  53                 initialize(sampleRate);
  54         }
  55
  56         ~TalEq()
  57         {
  58         }
  59
  60         void setLowShelfGain(float lowShelfGain)
  61         {
  62                 this->lowShelfGain = lowShelfGain * 0.5f;
  63         }
  64
  65         void setHighShelfGain(float highShelfGain)
  66         {
  67                 this->highShelfGain = highShelfGain * 0.5f;
  68         }
  69
  70         void setPeakGain(float peakGain)
  71         {
  72                 this->peakGain = peakGain * 0.5f;
  73         }
  74
  75         void setLowShelfFrequency(float lowShelfFrequency)
  76         {
  77                 this->lowShelfFrequency = audioUtils.getLogScaledFrequency(lowShelfFrequency);
  78         }
  79
  80         void setHighShelfFrequency(float highShelfFrequency)
  81         {
  82                 this->highShelfFrequency = audioUtils.getLogScaledFrequency(highShelfFrequency);
  83         }
  84
  85         void setPeakFrequency(float peakFrequency)
  86         {
  87                 this->peakFrequency = audioUtils.getLogScaledFrequency(peakFrequency);
  88         }
  89
  90         void initialize(float sampleRate)
  91         {
  92                 highShelf = new HighShelf(sampleRate, 18);
  93                 lowShelf = new LowShelf(sampleRate, 18);
  94                 peakEq = new PeakEq(sampleRate, 18);
  95
  96                 lowShelfGain = 0.5f;
  97                 highShelfGain = 0.5f;
  98                 peakGain = 0.5f;
  99
 100                 lowShelfFrequency = 1000.0f;
 101                 highShelfFrequency = 1000.0f;
 102                 peakFrequency = 1000.0f;
 103         }
 104
 105         void process(float *sample)
 106         {
 107                 highShelf->tick(sample, highShelfFrequency, 1.05f, highShelfGain); // 0..0.5
 108                 lowShelf->tick(sample, lowShelfFrequency, 1.05f, lowShelfGain); // 0..0.5
 109                 peakEq->tick(sample, peakFrequency, 1.05f, peakGain); // 0..0.5
 110         }
 111 };
 112 #endif
 113