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@ -21,31 +21,44 @@ |
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class AudioSynthWaveformSine_F32 : public AudioStream_F32 |
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class AudioSynthWaveformSine_F32 : public AudioStream_F32 |
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{ |
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{ |
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//GUI: inputs:0, outputs:1 //this line used for automatic generation of GUI node
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//GUI: inputs:0, outputs:1 //this line used for automatic generation of GUI node
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//GUI: shortName:sine //this line used for automatic generation of GUI node
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public: |
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public: |
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AudioSynthWaveformSine_F32() : AudioStream_F32(0, NULL), magnitude(16384) {} |
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AudioSynthWaveformSine_F32() : AudioStream_F32(0, NULL), magnitude(16384) { } |
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AudioSynthWaveformSine_F32(const AudioSettings_F32 &settings) : AudioStream_F32(0, NULL), magnitude(16384) { |
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setSampleRate_Hz(settings.sample_rate_Hz); |
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} |
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void frequency(float freq) { |
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void frequency(float freq) { |
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if (freq < 0.0) freq = 0.0; |
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if (freq < 0.0) freq = 0.0; |
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else if (freq > AUDIO_SAMPLE_RATE_EXACT/2) freq = AUDIO_SAMPLE_RATE_EXACT/2; |
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else if (freq > sample_rate_Hz/2.f) freq = sample_rate_Hz/2.f; |
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phase_increment = freq * (4294967296.0 / AUDIO_SAMPLE_RATE_EXACT); |
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phase_increment = freq * (4294967296.0 / sample_rate_Hz); |
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} |
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} |
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void phase(float angle) { |
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void phase(float angle) { |
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if (angle < 0.0) angle = 0.0; |
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if (angle < 0.0f) angle = 0.0f; |
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else if (angle > 360.0) { |
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else if (angle > 360.0f) { |
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angle = angle - 360.0; |
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angle = angle - 360.0f; |
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if (angle >= 360.0) return; |
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if (angle >= 360.0f) return; |
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} |
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} |
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phase_accumulator = angle * (4294967296.0 / 360.0); |
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phase_accumulator = angle * (4294967296.0f / 360.0f); |
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} |
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} |
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void amplitude(float n) { |
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void amplitude(float n) { |
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if (n < 0) n = 0; |
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if (n < 0) n = 0; |
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else if (n > 1.0) n = 1.0; |
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else if (n > 1.0f) n = 1.0f; |
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magnitude = n * 65536.0; |
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magnitude = n * 65536.0f; |
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} |
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void setSampleRate_Hz(const float &fs_Hz) { |
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phase_increment *= sample_rate_Hz / fs_Hz; //change the phase increment for the new frequency
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sample_rate_Hz = fs_Hz; |
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} |
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} |
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void begin(void) { enabled = true; } |
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void end(void) { enabled = false; } |
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virtual void update(void); |
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virtual void update(void); |
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private: |
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private: |
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uint32_t phase_accumulator; |
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uint32_t phase_accumulator = 0; |
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uint32_t phase_increment; |
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uint32_t phase_increment = 0; |
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int32_t magnitude; |
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int32_t magnitude = 0; |
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float sample_rate_Hz = AUDIO_SAMPLE_RATE; |
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volatile uint8_t enabled = 1; |
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}; |
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}; |
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