michal/harmonizer_plugin
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closes #6

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closes #9
pitch detection runs on known schedule
fixed erratic pitch detection on launch
This commit is contained in:
michalcourson
2025-11-09 11:16:59 -05:00
parent e89620df27
commit 3c6616d1ec
6 changed files with 177 additions and 174 deletions
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35
Source/Shifter.cpp
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@ -28,10 +28,10 @@ void Shifter::Init(float samplerate, int samplesPerBlock)
{
sample_rate_ = samplerate;
blocksize = samplesPerBlock;
out_midi_smoother.SetFrameTime((float)samplesPerBlock / samplerate);
out_midi_smoother.SetFrameTime((float)256 / samplerate);
volume = 1;
helm.setframesize(1024);
helm.setoverlap(1);
helm.setoverlap(2);
for (int i = 0; i < MAX_VOICES; ++i)
{
voices[i].Init(samplerate);
@ -46,18 +46,21 @@ void Shifter::Init(float samplerate, int samplesPerBlock)
for (int i = 0; i < 8192; ++i) {
cos_lookup[i] = cos(2 * PI_F * i / 8192.0);
}
in_period = 0;
}
void Shifter::Process(const float* const* in,
float** out,
size_t size)
{
DetectPitch(in, out, size);
SetRates();
// for (size_t i = 0; i < size; ++i) {
// out[0][i] = 0;
// }
GetSamples(out, in[0], size);
for (size_t i = 0; i < size; i += 256) {
size_t offset = i;
size_t lefover_size = std::min((size_t)256, size - i);
DetectPitch(in, out, lefover_size, offset);
SetRates();
GetSamples(out, in[0], lefover_size, offset);
}
//for (size_t i = 0; i < size; ++i)
//{
// // out[0][i] = osc.Process();
@ -78,7 +81,7 @@ float findMedian(float a, float b, float c) {
}
void Shifter::DetectPitch(const float* const* in, float** out, size_t size)
void Shifter::DetectPitch(const float* const* in, float** out, size_t size, size_t offset)
{
// detect current pitch
// pitch_detect.update(in[0], size);
@ -97,16 +100,16 @@ void Shifter::DetectPitch(const float* const* in, float** out, size_t size)
// current_pitch = findMedian(last_freqs[0], last_freqs[1], last_freqs[2]);
// in_period = 1.0 / current_pitch * 48000;
helm.iosamples(in[0], out[0], size);
helm.iosamples(in[0]+offset, out[0]+offset, size);
float period = helm.getperiod();
float fidel = helm.getfidelity();
//DBG("frequency: " << 48000 / period << " fidel: " << fidel);
// Adjustable filter amount (0.0f = no filtering, 1.0f = max filtering)
static float in_period_filter_amount = 0.5f; // You can expose this as a parameter
const float in_period_filter_amount = 0.5f; // You can expose this as a parameter
if (fidel > 0.95) {
// Smoothly filter in_period changes
// Smoothly filter in_`period changes
in_period = in_period * in_period_filter_amount + period * (1.0f - in_period_filter_amount);
}
float in_freq = sample_rate_ / in_period;
@ -201,7 +204,7 @@ void Shifter::AddInterpolatedFrame(int voice, int max_index, float resampling_pe
}
}
void Shifter::GetSamples(float** output, const float* input, size_t size)
void Shifter::GetSamples(float** output, const float* input, size_t size, size_t offset)
{
if (freeze_needs_copy) {
freeze_needs_copy = false;
@ -273,13 +276,13 @@ void Shifter::GetSamples(float** output, const float* input, size_t size)
//add input samples
in_buffer[in_playhead] = input[i];
in_buffer[in_playhead] = input[i+offset];
//output samples, set to 0
for (int ch = 0; ch < 2; ++ch) {
output[ch][i] = out_buffer[ch][out_playhead];
output[ch][i+offset] = out_buffer[ch][out_playhead];
if (!enable_autotune) {
output[ch][i] += input[i] * melody_mix;
output[ch][i+offset] += input[i+offset] * melody_mix;
}
out_buffer[ch][out_playhead] = 0;
}