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59 lines
1.3 KiB
59 lines
1.3 KiB
#include <random>
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#include "../utility/dsp.h"
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#include "clockednoise.h"
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using namespace daisysp;
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void ClockedNoise::Init(float sample_rate)
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{
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sample_rate_ = sample_rate;
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phase_ = 0.0f;
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sample_ = 0.0f;
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next_sample_ = 0.0f;
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frequency_ = 0.001f;
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}
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float ClockedNoise::Process()
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{
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float next_sample = next_sample_;
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float sample = sample_;
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float this_sample = next_sample;
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next_sample = 0.0f;
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const float raw_sample = rand() * kRandFrac * 2.0f - 1.0f;
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float raw_amount = 4.0f * (frequency_ - 0.25f);
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raw_amount = fclamp(raw_amount, 0.0f, 1.0f);
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phase_ += frequency_;
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if(phase_ >= 1.0f)
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{
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phase_ -= 1.0f;
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float t = phase_ / frequency_;
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float new_sample = raw_sample;
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float discontinuity = new_sample - sample;
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this_sample += discontinuity * ThisBlepSample(t);
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next_sample += discontinuity * NextBlepSample(t);
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sample = new_sample;
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}
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next_sample += sample;
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next_sample_ = next_sample;
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sample_ = sample;
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return this_sample + raw_amount * (raw_sample - this_sample);
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}
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void ClockedNoise::SetFreq(float freq)
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{
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freq = freq / sample_rate_;
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freq = fclamp(freq, 0.0f, 1.0f);
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frequency_ = freq;
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}
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void ClockedNoise::Sync()
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{
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phase_ = 1.0f;
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} |