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add block processing

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This commit is contained in:
Chris
2024-06-15 09:59:49 +02:00
parent 0675ffe244
commit 11e4298310
1 changed files with 41 additions and 7 deletions
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48
filter/chebyshev.h
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@@ -6,15 +6,20 @@
namespace trnr {
class chebyshev {
public:
chebyshev() {}
chebyshev(double _samplerate, double _frequency)
{
set_samplerate(_samplerate);
set_frequency(_frequency);
}
void set_samplerate(double _samplerate) { samplerate = _samplerate; }
void process_sample(double& input, double frequency)
void set_frequency(double _frequency)
{
if (frequency >= 20000.f) { frequency = 20000.f; }
// First calculate the prewarped digital frequency :
auto K = tanf(M_PI * frequency / samplerate);
auto K = tanf(M_PI * _frequency / samplerate);
// Now we calc some Coefficients :
auto sg = sinh(passband_ripple);
@@ -44,8 +49,17 @@ public:
b3 = a3 * K;
b4 = 2 * b3;
b5 = b3;
}
// Then calculate the output as follows:
void reset(double _samplerate, double _frequency)
{
set_samplerate(_samplerate);
set_frequency(_frequency);
}
template <typename t_sample>
void process_sample(t_sample& input)
{
auto Stage1 = b0 * input + state0;
state0 = b1 * input + a1 * Stage1 + state1;
state1 = b2 * input + a2 * Stage1;
@@ -54,8 +68,28 @@ public:
state3 = b5 * Stage1 + a5 * input;
}
template <typename t_sample>
void process_sample(t_sample& input, double frequency)
{
set_frequency(frequency);
process_sample(input);
}
template <typename t_sample>
void process_block(t_sample* input, int blockSize)
{
t_sample output = 0;
for (int i = 0; i < blockSize; i++) {
output = input[i];
process_sample(output);
input[i] = output;
}
}
private:
double samplerate = 0;
double samplerate = 20000;
double a0 = 0;
double a1 = 0;
double a2 = 0;