diff options
Diffstat (limited to 'multiFilter.h')
| -rw-r--r-- | multiFilter.h | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/multiFilter.h b/multiFilter.h index 3d80d3f..5d8a95e 100644 --- a/multiFilter.h +++ b/multiFilter.h @@ -26,21 +26,29 @@ class Multifilter { private: + //Current selected filter int filterSelection; + //Current filter frequency int freq; + //Current filter resonance. int res; + //Mozzi's lowpass filter. LowPassFilter lpf; + //Mozzi's multimode filter in notch mode StateVariable <NOTCH> nf; + //Mozzi's multimode filter in highpass mode StateVariable <HIGHPASS> hpf; + //Mozzi's multimode filter in bandpass mode StateVariable <BANDPASS> bpf; public: - + //Constructor. The type parameter is the type of the filter used at first. Multifilter(int type){ filterSelection = type; } /** + *Changes the filter type and sets the new filter to the right value. * 0: Lowpass 1: Highpass, 2 : Bandpass, 3: Notch, 4 : Allpass. */ int changeFilter(int selection) { @@ -50,7 +58,9 @@ class Multifilter { setCutoffFreq(freq); } } - + /** + *Sets the resonance of the filter. Takes care of the conversion if they are needed. + */ int setResonance(int resonance) { res = resonance; switch (filterSelection) { @@ -58,9 +68,8 @@ class Multifilter { lpf.setResonance(resonance); break; case 1: - // Oh non, c'est trop louuurd. - //hpf.setResonance(map(resonance, 180, 1, 0, 255)); - // Approximation d'un mappage de valeurs de 0 à 255 vers 20 à 147. + + // maps values from 0-255 to 147-20 hpf.setResonance(180 - (resonance>>1) -33); break; case 2: @@ -71,7 +80,9 @@ class Multifilter { break; } } - + /** + *Sets the cutoff of the filter. Takes care of the conversion if they are needed. + */ int setCutoffFreq(int cutoff) { freq = cutoff; switch (filterSelection) { @@ -79,7 +90,7 @@ class Multifilter { lpf.setCutoffFreq(cutoff); break; case 1: - // Approximation de mappage de valeurs de 0 à 255 vers 20 à 4100. + // maps values from 0-255 to 20-4100 hpf.setCentreFreq((cutoff<<4)+20); break; case 2: @@ -92,7 +103,9 @@ class Multifilter { break; } } - + /** + *returns the signal affected by the selected filter. + */ int next(int signal) { switch (filterSelection) { case 0: |