41 Fir( std::vector<StkFloat> &coefficients );
52 void setCoefficients( std::vector<StkFloat> &coefficients,
bool clearState =
false );
55 StkFloat
lastOut(
void )
const {
return lastFrame_[0]; };
58 StkFloat
tick( StkFloat input );
89 inputs_[0] = gain_ * input;
91 for (
unsigned int i=(
unsigned int)(b_.size())-1; i>0; i-- ) {
92 lastFrame_[0] += b_[i] * inputs_[i];
93 inputs_[i] = inputs_[i-1];
95 lastFrame_[0] += b_[0] * inputs_[0];
102 #if defined(_STK_DEBUG_)
103 if ( channel >= frames.
channels() ) {
104 oStream_ <<
"Fir::tick(): channel and StkFrames arguments are incompatible!";
109 StkFloat *samples = &frames[channel];
110 unsigned int i, hop = frames.
channels();
111 for (
unsigned int j=0; j<frames.
frames(); j++, samples += hop ) {
112 inputs_[0] = gain_ * *samples;
115 for ( i=(
unsigned int)b_.size()-1; i>0; i-- ) {
116 *samples += b_[i] * inputs_[i];
117 inputs_[i] = inputs_[i-1];
119 *samples += b_[0] * inputs_[0];
122 lastFrame_[0] = *(samples-hop);
128 #if defined(_STK_DEBUG_)
130 oStream_ <<
"Fir::tick(): channel and StkFrames arguments are incompatible!";
135 StkFloat *iSamples = &iFrames[iChannel];
136 StkFloat *oSamples = &oFrames[oChannel];
138 for (
unsigned int j=0; j<iFrames.
frames(); j++, iSamples += iHop, oSamples += oHop ) {
139 inputs_[0] = gain_ * *iSamples;
142 for ( i=(
unsigned int)b_.size()-1; i>0; i-- ) {
143 *oSamples += b_[i] * inputs_[i];
144 inputs_[i] = inputs_[i-1];
146 *oSamples += b_[0] * inputs_[0];
149 lastFrame_[0] = *(oSamples-oHop);