public static void RC_set_freq(double f, FilterData pp)
{
pp.R = 1000.0;
pp.C = other((((double)f * sys.nchannels)), pp.R);
pp.invR = 1.0 / pp.R;
pp.dt_div_C = (1.0 / (sys.sample_rate * sys.nchannels)) / pp.C;
}
public static void RC_bandpass(Channel sound, int count, FilterData pp)
{
int a;
for (a = 0; a < pp.max; a++) {
RC_filter(sound, count, sys.HIGHPASS, a, pp);
RC_filter(sound, count, sys.LOWPASS, a, pp);
}
}
public DistortionParams()
{
lastval = new float[sys.MAX_CHANNELS];
fd = new FilterData();
noise = new FilterData();
fd.amplify = 1;
noise.amplify = 1;
}
public DistortionParams()
{
lastval = new float[sys.MAX_CHANNELS];
fd = new FilterData();
noise = new FilterData();
fd.amplify = 1;
noise.amplify = 1;
}
public static void RC_lowpass(Channel sound, int count, FilterData pp)
{
int a;
for (a = 0; a < pp.max; a++)
{
RC_filter(sound, count, sys.LOWPASS, a, pp);
}
}
public static void LC_filter(Channel sound, int count, int filter_no, double freq, FilterData pp)
{
double R, //
L, //
C, //
dt_div_L, //
dt_div_C; //
double du, //
d2i; //
int t, //
currchannel = 0; //
freq *= sys.nchannels;
L = 50e-3; /*
* like original crybaby wahwah, hehehe
*/
C = 1.0 / (4.0 * Math.Pow(sys.M_PI * freq, 2.0) * L);
R = 300.0;
dt_div_C = 1.0 / (C * sys.sample_rate * sys.nchannels);
dt_div_L = 1.0 / (L * sys.sample_rate * sys.nchannels);
for (t = 0; t < count; t++) {
du = (double) sound[t] - pp.last_sample[filter_no,0,currchannel];
pp.last_sample[filter_no,0,currchannel] = (double) sound[t];
d2i = dt_div_L * (du - pp.i[filter_no,0,currchannel] * dt_div_C -
R * pp.di[filter_no,0,currchannel]);
pp.di[filter_no,0,currchannel] += d2i;
pp.i[filter_no,0,currchannel] += pp.di[filter_no,0,currchannel];
//sound[t] = (int) (pp.i[filter_no][0][currchannel] * 500.0); // is modified to
// sound[t] = (float) pp.i[filter_no][0][currchannel] ;
sound[t] = (float) (pp.i[filter_no,0,currchannel] * 500);
}
}
public static void RC_filter(Channel sound, int count, int mode, int filter_no, FilterData pp)
{
double du,
di;
int t,
currchannel = 0;
for (t = 0; t < count; t++) {
du = (double) sound[t] - pp.last_sample[filter_no,mode,currchannel];
pp.last_sample[filter_no,mode,currchannel] = (double) sound[t];
di = pp.invR * (du - pp.i[filter_no,mode,currchannel] * pp.dt_div_C);
pp.i[filter_no,mode,currchannel] += di;
if (mode == sys.HIGHPASS)
sound[t] =
(float)((pp.i[filter_no,mode,currchannel] * pp.R) * pp.amplify);
else
sound[t] =(float) (((double) sound[t] - pp.i[filter_no,mode,currchannel] * pp.R) * pp.amplify);
if (sys.nchannels > 1) { }
//currchannel = !currchannel;
}
}
public int wah_count; /* number of "cries" processed */
#endregion Fields
#region Constructors
public AutowahParams()
{
fd = new FilterData();
}
public static void RC_filter(Channel sound, int count, int mode, int filter_no, FilterData pp)
{
double du,
di;
int t,
currchannel = 0;
for (t = 0; t < count; t++)
{
du = (double)sound[t] - pp.last_sample[filter_no, mode, currchannel];
pp.last_sample[filter_no, mode, currchannel] = (double)sound[t];
di = pp.invR * (du - pp.i[filter_no, mode, currchannel] * pp.dt_div_C);
pp.i[filter_no, mode, currchannel] += di;
if (mode == sys.HIGHPASS)
{
sound[t] =
(float)((pp.i[filter_no, mode, currchannel] * pp.R) * pp.amplify);
}
else
{
sound[t] = (float)(((double)sound[t] - pp.i[filter_no, mode, currchannel] * pp.R) * pp.amplify);
}
if (sys.nchannels > 1)
{
}
//currchannel = !currchannel;
}
}
public static void RC_setup(int max, double amplify, FilterData pp)
{
pp.max = max;
pp.amplify = amplify;
}
public static void LC_filter(Channel sound, int count, int filter_no, double freq, FilterData pp)
{
double R, //
L, //
C, //
dt_div_L, //
dt_div_C; //
double du, //
d2i; //
int t, //
currchannel = 0; //
freq *= sys.nchannels;
L = 50e-3; /*
* like original crybaby wahwah, hehehe
*/
C = 1.0 / (4.0 * Math.Pow(sys.M_PI * freq, 2.0) * L);
R = 300.0;
dt_div_C = 1.0 / (C * sys.sample_rate * sys.nchannels);
dt_div_L = 1.0 / (L * sys.sample_rate * sys.nchannels);
for (t = 0; t < count; t++)
{
du = (double)sound[t] - pp.last_sample[filter_no, 0, currchannel];
pp.last_sample[filter_no, 0, currchannel] = (double)sound[t];
d2i = dt_div_L * (du - pp.i[filter_no, 0, currchannel] * dt_div_C -
R * pp.di[filter_no, 0, currchannel]);
pp.di[filter_no, 0, currchannel] += d2i;
pp.i[filter_no, 0, currchannel] += pp.di[filter_no, 0, currchannel];
//sound[t] = (int) (pp.i[filter_no][0][currchannel] * 500.0); // is modified to
// sound[t] = (float) pp.i[filter_no][0][currchannel] ;
sound[t] = (float)(pp.i[filter_no, 0, currchannel] * 500);
}
}
public PhasorParams()
{
fd = new FilterData();
}
public static void RC_set_freq(double f, FilterData pp)
{
pp.R = 1000.0;
pp.C = other((((double) f * sys.nchannels)), pp.R);
pp.invR = 1.0 / pp.R;
pp.dt_div_C = (1.0 / (sys.sample_rate * sys.nchannels)) / pp.C;
}
public static void RC_setup(int max, double amplify, FilterData pp)
{
pp.max = max;
pp.amplify = amplify;
}
public PhasorParams()
{
fd = new FilterData();
}
public AutowahParams()
{
fd = new FilterData();
}
