include Yin pitch tracking algo
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Trent
1
.gitignore
vendored
1
.gitignore
vendored
@@ -2,3 +2,4 @@
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JuceLibraryCode/
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Builds/
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*bak
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*jucer
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@@ -1,7 +1,6 @@
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#include "PluginProcessor.h"
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#include "PluginEditor.h"
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LampshadeAudioProcessor::LampshadeAudioProcessor()
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#ifndef JucePlugin_PreferredChannelConfigurations
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: AudioProcessor (BusesProperties()
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@@ -69,6 +68,7 @@ void LampshadeAudioProcessor::changeProgramName (int index, const String& newNam
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void LampshadeAudioProcessor::prepareToPlay (double sampleRate, int samplesPerBlock)
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{
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myYin = Yin(sampleRate, samplesPerBlock);
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}
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void LampshadeAudioProcessor::releaseResources()
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@@ -105,8 +105,12 @@ void LampshadeAudioProcessor::processBlock (AudioSampleBuffer& buffer, MidiBuffe
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for (int i = totalNumInputChannels; i < totalNumOutputChannels; ++i)
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buffer.clear(i, 0, buffer.getNumSamples());
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float pitch = myYin.getPitch(buffer.getWritePointer (0)); // returns Pitch in Hertz
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printf("pitch: %f", pitch);
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for (int channel = 0; channel < totalNumInputChannels; ++channel) {
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//float* channelData = buffer.getWritePointer (channel);
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}
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}
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@@ -1,7 +1,7 @@
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#pragma once
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#include "../JuceLibraryCode/JuceHeader.h"
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#include "Yin.h"
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class LampshadeAudioProcessor : public AudioProcessor
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{
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@@ -38,4 +38,5 @@ public:
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private:
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (LampshadeAudioProcessor)
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Yin myYin;
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};
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146
Source/Yin.cpp
Normal file
146
Source/Yin.cpp
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@@ -0,0 +1,146 @@
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#include "Yin.h"
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#include <stdlib.h>
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//#include "WProgram.h"
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void Yin::initialize(float yinSampleRate,int yinBufferSize){
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bufferSize = yinBufferSize;
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sampleRate = yinSampleRate;
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halfBufferSize = bufferSize / 2;
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threshold = 0.15;
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probability = 0.0;
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//initialize array and set it to zero
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yinBuffer = (float *) malloc(sizeof(float)* halfBufferSize);
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for(int i = 0; i < halfBufferSize; i++){
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yinBuffer[i] = 0;
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}
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}
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Yin::Yin(){
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}
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Yin::Yin(float yinSampleRate,int yinBufferSize){
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initialize(yinSampleRate,yinBufferSize);
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}
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float Yin::getProbability(){
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return probability;
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}
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float Yin::getPitch(float* buffer){
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int tauEstimate = -1;
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float pitchInHertz = -1;
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//step 2
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difference(buffer);
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// step 3
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cumulativeMeanNormalizedDifference();
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//step 4
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tauEstimate = absoluteThreshold();
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//step 5
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if(tauEstimate != -1){
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pitchInHertz = sampleRate / parabolicInterpolation(tauEstimate);
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}
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return pitchInHertz;
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}
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float Yin::parabolicInterpolation(int tauEstimate) {
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float betterTau;
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int x0;
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int x2;
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if (tauEstimate < 1) {
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x0 = tauEstimate;
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}
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else {
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x0 = tauEstimate - 1;
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}
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if (tauEstimate + 1 < halfBufferSize) {
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x2 = tauEstimate + 1;
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}
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else {
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x2 = tauEstimate;
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}
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if (x0 == tauEstimate) {
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if (yinBuffer[tauEstimate] <= yinBuffer[x2]) {
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betterTau = tauEstimate;
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}
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else {
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betterTau = x2;
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}
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}
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else if (x2 == tauEstimate) {
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if (yinBuffer[tauEstimate] <= yinBuffer[x0]) {
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betterTau = tauEstimate;
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}
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else {
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betterTau = x0;
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}
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}
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else {
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float s0, s1, s2;
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s0 = yinBuffer[x0];
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s1 = yinBuffer[tauEstimate];
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s2 = yinBuffer[x2];
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// fixed AUBIO implementation, thanks to Karl Helgason:
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// (2.0f * s1 - s2 - s0) was incorrectly multiplied with -1
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betterTau = tauEstimate + (s2 - s0) / (2 * (2 * s1 - s2 - s0));
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}
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return betterTau;
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}
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void Yin::cumulativeMeanNormalizedDifference(){
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int tau;
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yinBuffer[0] = 1;
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float runningSum = 0;
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for (tau = 1; tau < halfBufferSize; tau++) {
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runningSum += yinBuffer[tau];
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yinBuffer[tau] *= tau / runningSum;
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}
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}
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void Yin::difference(float* buffer){
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int index;
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int tau;
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float delta;
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for(tau = 0 ; tau < halfBufferSize; tau++){
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for(index = 0; index < halfBufferSize; index++){
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delta= buffer[index] - buffer[index + tau];
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yinBuffer[tau] += delta * delta;
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}
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}
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}
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int Yin::absoluteThreshold(){
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int tau;
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// first two positions in yinBuffer are always 1
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// So start at the third (index 2)
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for (tau = 2; tau < halfBufferSize ; tau++) {
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if (yinBuffer[tau] < threshold) {
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while (tau + 1 < halfBufferSize && yinBuffer[tau + 1] < yinBuffer[tau]) {
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tau++;
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}
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// found tau, exit loop and return
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// store the probability
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// From the YIN paper: The threshold determines the list of
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// candidates admitted to the set, and can be interpreted as the
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// proportion of aperiodic power tolerated
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// within a ëëperiodicíí signal.
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//
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// Since we want the periodicity and and not aperiodicity:
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// periodicity = 1 - aperiodicity
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probability = 1 - yinBuffer[tau];
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break;
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}
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}
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// if no pitch found, tau => -1
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if (tau == halfBufferSize || yinBuffer[tau] >= threshold) {
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tau = -1;
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probability = 0;
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}
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return tau;
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}
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26
Source/Yin.h
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26
Source/Yin.h
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@@ -0,0 +1,26 @@
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#pragma once
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//#include "WProgram.h"
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class Yin{
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public:
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Yin();
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Yin(float sampleRate,int bufferSize);
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void initialize(float sampleRate,int bufferSize);
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float getPitch(float* buffer);
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float getProbability();
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private:
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float parabolicInterpolation(int tauEstimate);
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int absoluteThreshold();
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void cumulativeMeanNormalizedDifference();
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void difference(float* buffer);
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double threshold;
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int bufferSize;
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int halfBufferSize;
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float sampleRate;
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float* yinBuffer;
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float probability;
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};
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@@ -1,65 +0,0 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<JUCERPROJECT id="RELS1e" name="lampshade" displaySplashScreen="1" reportAppUsage="1"
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splashScreenColour="Dark" projectType="audioplug" version="1.0.0"
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bundleIdentifier="com.yourcompany.lampshade" includeBinaryInAppConfig="1"
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buildVST="1" buildVST3="0" buildAU="1" buildAUv3="0" buildRTAS="0"
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buildAAX="0" buildStandalone="0" enableIAA="0" pluginName="lampshade"
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pluginDesc="lampshade" pluginManufacturer="yourcompany" pluginManufacturerCode="Manu"
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pluginCode="Rels" pluginChannelConfigs="" pluginIsSynth="0" pluginWantsMidiIn="0"
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pluginProducesMidiOut="0" pluginIsMidiEffectPlugin="0" pluginEditorRequiresKeys="0"
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pluginAUExportPrefix="lampshadeAU" pluginRTASCategory="" aaxIdentifier="com.yourcompany.lampshade"
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pluginAAXCategory="AAX_ePlugInCategory_Dynamics" jucerVersion="5.0.2">
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<MAINGROUP id="GHLPwD" name="lampshade">
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<GROUP id="{C42E5ACC-06AB-BF28-4550-5DDDE3A4BA5F}" name="Source">
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<FILE id="YxKhY1" name="PluginProcessor.cpp" compile="1" resource="0"
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file="Source/PluginProcessor.cpp"/>
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<FILE id="n6D5RN" name="PluginProcessor.h" compile="0" resource="0"
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file="Source/PluginProcessor.h"/>
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<FILE id="LeuZUn" name="PluginEditor.cpp" compile="1" resource="0"
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file="Source/PluginEditor.cpp"/>
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<FILE id="ReytWw" name="PluginEditor.h" compile="0" resource="0" file="Source/PluginEditor.h"/>
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</GROUP>
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</MAINGROUP>
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<EXPORTFORMATS>
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<XCODE_MAC targetFolder="Builds/MacOSX">
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<CONFIGURATIONS>
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<CONFIGURATION name="Debug" isDebug="1" optimisation="1" targetName="lampshade"/>
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<CONFIGURATION name="Release" isDebug="0" optimisation="3" targetName="lampshade"/>
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</CONFIGURATIONS>
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<MODULEPATHS>
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<MODULEPATH id="juce_core" path="../JUCE/modules"/>
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<MODULEPATH id="juce_events" path="../JUCE/modules"/>
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<MODULEPATH id="juce_graphics" path="../JUCE/modules"/>
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<MODULEPATH id="juce_data_structures" path="../JUCE/modules"/>
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<MODULEPATH id="juce_gui_basics" path="../JUCE/modules"/>
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<MODULEPATH id="juce_gui_extra" path="../JUCE/modules"/>
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<MODULEPATH id="juce_cryptography" path="../JUCE/modules"/>
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<MODULEPATH id="juce_video" path="../JUCE/modules"/>
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<MODULEPATH id="juce_opengl" path="../JUCE/modules"/>
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<MODULEPATH id="juce_audio_basics" path="../JUCE/modules"/>
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<MODULEPATH id="juce_audio_devices" path="../JUCE/modules"/>
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<MODULEPATH id="juce_audio_formats" path="../JUCE/modules"/>
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<MODULEPATH id="juce_audio_processors" path="../JUCE/modules"/>
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<MODULEPATH id="juce_audio_plugin_client" path="../JUCE/modules"/>
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</MODULEPATHS>
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</XCODE_MAC>
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</EXPORTFORMATS>
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<MODULES>
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<MODULE id="juce_audio_basics" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_audio_devices" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_audio_formats" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_audio_plugin_client" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_audio_processors" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_core" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_cryptography" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_data_structures" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_events" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_graphics" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_gui_basics" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_gui_extra" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_opengl" showAllCode="1" useLocalCopy="0"/>
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<MODULE id="juce_video" showAllCode="1" useLocalCopy="0"/>
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</MODULES>
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<JUCEOPTIONS JUCE_QUICKTIME="disabled"/>
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</JUCERPROJECT>
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BIN
test Project/Ableton Project Info/Project8_1.cfg
Normal file
BIN
test Project/Ableton Project Info/Project8_1.cfg
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Binary file not shown.
0
test Project/Icon
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0
test Project/Icon
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BIN
test Project/test.als
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BIN
test Project/test.als
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Binary file not shown.
41
test.RPP
41
test.RPP
@@ -1,4 +1,4 @@
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<REAPER_PROJECT 0.1 "5.40/OSX64" 1497899251
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<REAPER_PROJECT 0.1 "5.40/OSX64" 1498529808
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RIPPLE 0
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GROUPOVERRIDE 0 0 0
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AUTOXFADE 1
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@@ -102,4 +102,43 @@
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>
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<PROJBAY
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>
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<TRACK {0285AA2F-2341-854C-BBEE-985C6E7A9ADD}
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NAME ""
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PEAKCOL 16576
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BEAT -1
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AUTOMODE 0
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VOLPAN 1 0 -1 -1 1
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MUTESOLO 0 0 0
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IPHASE 0
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ISBUS 0 0
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BUSCOMP 0 0
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SHOWINMIX 1 0.6667 0.5 1 0.5 0 0 0
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FREEMODE 0
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SEL 0
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REC 1 0 0 0 0 0 0
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VU 2
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TRACKHEIGHT 0 0
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INQ 0 0 0 0.5 100 0 0 100
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NCHAN 2
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FX 1
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TRACKID {0285AA2F-2341-854C-BBEE-985C6E7A9ADD}
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PERF 0
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MIDIOUT -1
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MAINSEND 1 0
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<FXCHAIN
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WNDRECT 125 469 639 376
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SHOW 0
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LASTSEL 0
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DOCKED 0
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BYPASS 0 0 0
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<VST "VST: lampshade (yourcompany)" lampshade.vst 0 "" 1382378611
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c2xlUu5e7f4CAAAAAQAAAAAAAAACAAAAAAAAAAIAAAABAAAAAAAAAAIAAAAAAAAACAAAAAAAAAAAABAA
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776t3g3wrd4=
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AAAQAAAA
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>
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FLOATPOS 0 0 0 0
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FXID {B7DD42FB-8D0E-C24C-924A-407EC4334EB7}
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WAK 0
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>
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>
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>
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