AnalogFilter::AnalogFilter (unsigned char Ftype, float Ffreq, float Fq,
unsigned char Fstages)
{
iSAMPLE_RATE=SAMPLE_RATE;
ifSAMPLE_RATE=fSAMPLE_RATE;
stages = Fstages;
for (int i = 0; i < 3; i++)
{
oldc[i] = 0.0;
oldd[i] = 0.0;
c[i] = 0.0;
d[i] = 0.0;
};
type = Ftype;
freq = Ffreq;
q = Fq;
gain = 1.0;
if (stages >= MAX_FILTER_STAGES)
stages = MAX_FILTER_STAGES;
cleanup ();
firsttime = 0;
abovenq = 0;
oldabovenq = 0;
setfreq_and_q (Ffreq, Fq);
firsttime = 1;
d[0] = 0; //this is not used
outgain = 1.0;
};
void
AnalogFilter_Init(ZEq10ban_t * s, AnalogFilter *filter, unsigned char Ftype, float Ffreq, float Fq, unsigned char Fstages)
{
int i;
filter->stages = Fstages;
for (i = 0; i < 3; i++)
{
filter->oldc[i] = 0.0;
filter->oldd[i] = 0.0;
filter->c[i] = 0.0;
filter->d[i] = 0.0;
};
filter->type = Ftype;
filter->freq = Ffreq;
filter->q = Fq;
filter->gain = 1.0;
if (filter->stages >= MAX_FILTER_STAGES)
filter->stages = MAX_FILTER_STAGES;
AnalogFilter_Cleanup (s,filter);
filter->firsttime = 0;
filter->abovenq = 0;
filter->oldabovenq = 0;
setfreq_and_q (s, filter, Ffreq, Fq);
filter->firsttime = 1;
filter->d[0] = 0; //this is not used
filter->outgain = 1.0;
};
AnalogFilter::AnalogFilter(unsigned char Ftype,
float Ffreq,
float Fq,
unsigned char Fstages,
unsigned int srate, int bufsize)
:Filter(srate, bufsize),
type(Ftype),
stages(Fstages),
freq(Ffreq),
q(Fq),
gain(1.0),
abovenq(false),
oldabovenq(false)
{
for(int i = 0; i < 3; ++i)
coeff.c[i] = coeff.d[i] = oldCoeff.c[i] = oldCoeff.d[i] = 0.0f;
if(stages >= MAX_FILTER_STAGES)
stages = MAX_FILTER_STAGES;
cleanup();
firsttime = false;
setfreq_and_q(Ffreq, Fq);
firsttime = true;
coeff.d[0] = 0; //this is not used
outgain = 1.0f;
}
void SVFilter::init(float sample_rate, int type, REALTYPE Ffreq, REALTYPE Fq, unsigned char Fstages, float gain)
{
m_sample_rate = sample_rate;
stages = Fstages;
m_type = type;
freq = Ffreq;
q = Fq;
m_gain = 1.0;
m_outgain = 1.0;
needsinterpolation = 0;
firsttime = 1;
if (stages >= MAX_FILTER_STAGES)
{
stages = MAX_FILTER_STAGES;
}
cleanup();
setfreq_and_q(Ffreq,Fq);
m_outgain = dB2rap(gain);
if (m_outgain > 1.0)
{
m_outgain = sqrt(m_outgain);
}
}
RBFilter::RBFilter (Parameters *param, int Ftype, float Ffreq, float Fq,
int Fstages)
{
this->param = param;
stages = Fstages;
type = Ftype;
freq = Ffreq;
q = Fq;
qmode = 0;
gain = 1.0f;
outgain = 1.0f;
needsinterpolation = 0;
firsttime = 1;
en_mix = 0;
oldq = 0.0f;
oldsq = 0.0f;
oldf = 0.0f;
hpg = lpg = bpg = 0.0f;
if (stages >= MAX_FILTER_STAGES)
stages = MAX_FILTER_STAGES;
cleanup ();
setfreq_and_q (Ffreq, Fq);
iper = 1.0f/param->fPERIOD;
a_smooth_tc = cSAMPLE_RATE/(cSAMPLE_RATE + 0.01f); //10ms time constant for averaging coefficients
b_smooth_tc = 1.0f - a_smooth_tc;
};
RBFilter::RBFilter (int Ftype, float Ffreq, float Fq,
int Fstages, double sample_rate, float* interpbuf)
{
stages = Fstages;
type = Ftype;
freq = Ffreq;
q = Fq;
qmode = 0;
gain = 1.0f;
outgain = 1.0f;
needsinterpolation = 0;
firsttime = 1;
en_mix = 0;
oldq = 0.0f;
oldsq = 0.0f;
oldf = 0.0f;
hpg = lpg = bpg = 0.0f;
fSAMPLE_RATE = sample_rate;
if (stages >= MAX_FILTER_STAGES)
stages = MAX_FILTER_STAGES;
cleanup ();
setfreq_and_q (Ffreq, Fq);
float cSAMPLE_RATE = 1/sample_rate;
a_smooth_tc = cSAMPLE_RATE/(cSAMPLE_RATE + 0.01f); //10ms time constant for averaging coefficients
b_smooth_tc = 1.0f - a_smooth_tc;
ismp = interpbuf;
};
SVFilter::SVFilter(unsigned char Ftype,REALTYPE Ffreq, REALTYPE Fq,unsigned char Fstages) {
stages=Fstages;
type=Ftype;
freq=Ffreq;
q=Fq;
gain=1.0;
outgain=1.0;
needsinterpolation=0;
firsttime=1;
if (stages>=MAX_FILTER_STAGES) stages=MAX_FILTER_STAGES;
cleanup();
setfreq_and_q(Ffreq,Fq);
};
SVFilter::SVFilter(unsigned char Ftype, float Ffreq, float Fq,
unsigned char Fstages)
:type(Ftype),
stages(Fstages),
freq(Ffreq),
q(Fq),
gain(1.0f),
needsinterpolation(false),
firsttime(true)
{
if(stages >= MAX_FILTER_STAGES)
stages = MAX_FILTER_STAGES;
outgain = 1.0f;
cleanup();
setfreq_and_q(Ffreq, Fq);
}
AnalogFilter::AnalogFilter (unsigned char Ftype, REALTYPE Ffreq, REALTYPE Fq, unsigned char Fstages)
{
ismp = new REALTYPE [SOUND_BUFFER_SIZE * 2];
stages=Fstages;
for (int i=0;i<3;i++){
oldc[i]=0.0;oldd[i]=0.0;
c[i]=0.0;d[i]=0.0;
};
type=Ftype;
freq=Ffreq;
q=Fq;
gain=1.0;
if (stages>=MAX_FILTER_STAGES) stages=MAX_FILTER_STAGES;
cleanup();
firsttime=0;
abovenq=0;oldabovenq=0;
setfreq_and_q(Ffreq,Fq);
firsttime=1;
d[0]=0;//this is not used
outgain=1.0;
};
