How to use getPitchDetector method in wpt

Best JavaScript code snippet using wpt

audiolistener.js

Source:audiolistener.js

...44   */45  async enable (app, statsdiv = null) {46    this.app = app47    this.config = this.app.config48    this.detector = await getPitchDetector(this.comparePitch)49    if (statsdiv) {50      this.stats = new AudioStatsDisplay(statsdiv)51      this.stats.setup() // reveal stats page52    }53    // Get the audio context or resume if it already exists54    if (this.context === null) {55      let input = await getAudioInput()56      this.context = input.audioContext57      this.mic = input.mic58      this.media = input.media59      this.scriptNode = setupAudioProcess(this.context, this.mic, this.detector)60    } else if (this.context.state === 'suspended') {61      await this.context.resume()62    }...

ml_pitchdetect.js

Source:ml_pitchdetect.js

1/**2 * Machine learning pitch detection function using the CREPE pitch detection3 * machine learning model with tensorflow4 */5// If code handles tensorflow/resampling it's from CREPE (see LICENCE)6// if it's a nightmare trying to deal with webaudio it's probably my fault (DCE)7import * as tf from '@tensorflow/tfjs'8import getAmplitude from './amplitudemeter'9const modelFile = './static/model/model.json'10const MODEL_SAMPLERATE = 1600011const BUFFER_SIZE = 102412/**13 * Resample an audio input buffer linearly (simplified)14 * @param buffer15 * @param resampled {Float32Array} - reusable array for output16 */17function resample (buffer, resampled) {18  const interpolate = (buffer.sampleRate % MODEL_SAMPLERATE !== 0)19  const multiplier = buffer.sampleRate / MODEL_SAMPLERATE20  const original = buffer.getChannelData(0)21  for (let i = 0; i < BUFFER_SIZE; i++) {22    if (!interpolate) {23      resampled[i] = original[i * multiplier]24    } else {25      // simplistic, linear resampling26      let left = Math.floor(i * multiplier)27      let right = left + 128      let p = i * multiplier - left29      resampled[i] = (1 - p) * original[left] + p * original[right]30    }31  }32}33class PitchDetails {34  constructor (frequency, amplitude, confidence) {35    this.frequency = frequency36    this.amplitude = amplitude37    this.confidence = confidence38  }39}40/**41 * Load the tensorflow model and get the frequency detection processor42 *43 *44 * @param callback - Function called by the pitch detector, should accept a PitchDetails object45 * @returns {Promise<pitchDetect>} - Pitch detector function that uses the provided callback46 */47async function getPitchDetector (callback) {48  let tfModel = await tf.loadLayersModel(modelFile)49  const cent_mapping = tf.add(50    tf.linspace(0, 7180, 360),51    tf.tensor(1997.3794084376191)52  )53  const resampled = new Float32Array(BUFFER_SIZE)54  /**55   * Take an audio input event and return the frequency and confidence of the model56   *57   * To be used as a script processor58   *59   * @param event - audio event60   */61  function pitchDetect (event) {62    resample(event.inputBuffer, resampled)63    let amplitude = getAmplitude(resampled.slice(0, 1024))64    tf.tidy(() => {65      // run the prediction on the model66      const frame = tf.tensor(resampled.slice(0, 1024))67      const zeromean = tf.sub(frame, tf.mean(frame))68      const framestd = tf.tensor(tf.norm(zeromean).dataSync() / Math.sqrt(1024))69      const normalized = tf.div(zeromean, framestd)70      const input = normalized.reshape([1, 1024])71      const activation = tfModel.predict([input]).reshape([360])72      // the confidence of voicing activity and the argmax bin73      let confidence = activation.max().dataSync()[0]74      const center = activation.argMax().dataSync()[0]75      // slice the local neighborhood around the argmax bin76      const start = Math.max(0, center - 4)77      const end = Math.min(360, center + 5)78      const weights = activation.slice([start], [end - start])79      const cents = cent_mapping.slice([start], [end - start])80      // take the local weighted average to get the predicted pitch81      const products = tf.mul(weights, cents)82      const productSum = products.dataSync().reduce((a, b) => a + b, 0)83      const weightSum = weights.dataSync().reduce((a, b) => a + b, 0)84      const predicted_cent = productSum / weightSum85      const predicted_hz = 10 * Math.pow(2, predicted_cent / 1200.0)86      let frequency = predicted_hz.toFixed(3)87      callback(new PitchDetails(frequency, amplitude, confidence))88    })89  }90  return pitchDetect91}92/**93 * Audio process configuration and setup for the ML model94 * Deprecated method that actually works for now95 *96 * @param ctx - AudioContext97 * @param mic - MediaStreamSource98 * @param detector - pitch detector99 */100function setupAudioProcess (ctx, mic, detector) {101  const minBufferSize = ctx.sampleRate / MODEL_SAMPLERATE * BUFFER_SIZE102  let bufferSize103  for (bufferSize = 4; bufferSize < minBufferSize; bufferSize *=2) {}104  const scriptNode = ctx.createScriptProcessor(bufferSize, 1, 1)105  // noinspection JSDeprecatedSymbols106  scriptNode.onaudioprocess = detector107  // workarounds used in crepe108  const gain = ctx.createGain()109  gain.gain.setValueAtTime(0, ctx.currentTime)110  mic.connect(scriptNode)111  scriptNode.connect(gain)112  gain.connect(ctx.destination)113  return scriptNode114}...

pitch-detector.js

Source:pitch-detector.js

...3window.AudioContext = window.AudioContext || window.webkitAudioContext;4var FFT_SIZE = 2048;5var audioContext;6var sourceNode;7function getPitchDetector(media) {8  if(!audioContext) {9    audioContext = new AudioContext();10    sourceNode = audioContext.createMediaElementSource(media);11  }12  var analyser = audioContext.createAnalyser();13  analyser.fftSize = FFT_SIZE;14  sourceNode.connect(analyser);15  analyser.connect(audioContext.destination);16  return {17      ensureStart() { return audioContext.resume(); },18      detect() { return getPitch(analyser); },19      cleanup() {20        sourceNode.disconnect();21        analyser.disconnect();...

Using AI Code Generation

1var wpt = require('wpt');2var detector = wpt.getPitchDetector("yin");3var pitch = detector.getPitch([0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8]);4console.log(pitch);5var wpt = require('wpt');6var detector = wpt.getPitchDetector("yin");7var pitch = detector.getPitchInMidi([0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8]);8console.log(pitch);9If you want to use the default pitch detector (YIN), you can use the following code:10var wpt = require('wpt');11var pitch = wpt.getPitch([0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8]);12console.log(pitch);13var wpt = require('wpt');14var pitch = wpt.getPitchInMidi([0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8]);15console.log(pitch);16The following code shows how to use the default pitch detector (YIN) to get the pitch of an audio file:17var wpt = require('wpt');18var pitch = wpt.getPitchFromFile("myaudio.wav");19console.log(pitch);20var wpt = require('wpt');21var pitch = wpt.getPitchInMidiFromFile("myaudio.wav");22console.log(pitch);23The following code shows how to use the default pitch detector (YIN) to get the pitch of an audio file:24var wpt = require('wpt');

Using AI Code Generation

1var wpt = require('web-audio-pitch-detector');2wpt.getPitchDetector({audioContext: new (window.AudioContext || window.webkitAudioContext)()}).then(function(detector) {3    detector.onPitchDetected(function(pitch) { console.log(pitch); });4    detector.start();5});6var wpt = require('web-audio-pitch-detector');7wpt.getPitchDetector({audioContext: new (window.AudioContext || window.webkitAudioContext)()}).then(function(detector) {8    detector.onPitchDetected(function(pitch) { console.log(pitch); });9    detector.start();10});11var wpt = require('web-audio-pitch-detector');12wpt.getPitchDetector({audioContext: new (window.AudioContext || window.webkitAudioContext)()}).then(function(detector) {13    detector.onPitchDetected(function(pitch) { console.log(pitch); });14    detector.start();15});16var wpt = require('web-audio-pitch-detector');17wpt.getPitchDetector({audioContext: new (window.AudioContext || window.webkitAudioContext)()}).then(function(detector) {18    detector.onPitchDetected(function(pitch) { console.log(pitch); });19    detector.start();20});21var wpt = require('web-audio-pitch-detector');22wpt.getPitchDetector({audioContext: new (window.AudioContext || window.webkitAudioContext)()}).then(function(detector) {23    detector.onPitchDetected(function(pitch) { console.log(pitch); });24    detector.start();25});

Using AI Code Generation

1var wptools = require('./wptools');2var pd = wptools.getPitchDetector();3var pitch = pd.getPitch();4console.log(pitch);5var wp = require('./warp');6var pd = new wp.PitchDetector();7module.exports.getPitchDetector = function () {8    return pd;9}

Using AI Code Generation

1var wptools = require('wptools');2var detector = wptools.getPitchDetector();3var pitch = detector.getPitch();4console.log('Pitch is ' + pitch);5var PitchDetector = require('./lib/pitchdetector');6var detector = new PitchDetector();7module.exports.getPitchDetector = function() {8  return detector;9};10var PitchDetector = function() {11  this.getPitch = function() {12    return 440;13  };14};15module.exports = PitchDetector;16var wptools = require('wptools');17var detector = wptools.getPitchDetector(function() {18  return new PitchDetector();19});20var pitch = detector.getPitch();21console.log('Pitch is ' + pitch);22var PitchDetector = require('./lib/pitchdetector');23module.exports.getPitchDetector = function(detectorFactory) {24  var detector = detectorFactory();25  return detector;26};27var PitchDetector = function() {28  this.getPitch = function() {29    return 440;30  };31};32module.exports = PitchDetector;

Using AI Code Generation

1var wpToolkit = require("wpToolkit");2var pitchDetector = wpToolkit.getPitchDetector();3var pitch = pitchDetector.getPitch();4var pitchDetector = require("pitchDetector");5var pitch = pitchDetector.getPitch();6var pitchDetector = require("pitchDetector");7var pitch = pitchDetector.getPitch();8var pitchDetector = require("pitchDetector");9var pitch = pitchDetector.getPitch();10var pitchDetector = require("pitchDetector");11var pitch = pitchDetector.getPitch();12var pitchDetector = require("pitchDetector");13var pitch = pitchDetector.getPitch();14var pitchDetector = require("pitchDetector");15var pitch = pitchDetector.getPitch();16var pitchDetector = require("pitchDetector");17var pitch = pitchDetector.getPitch();18var pitchDetector = require("pitchDetector");19var pitch = pitchDetector.getPitch();20var pitchDetector = require("pitchDetector");21var pitch = pitchDetector.getPitch();22var pitchDetector = require("pitchDetector");23var pitch = pitchDetector.getPitch();24var pitchDetector = require("pitchDetector");25var pitch = pitchDetector.getPitch();26var pitchDetector = require("pitchDetector");27var pitch = pitchDetector.getPitch();28var pitchDetector = require("pitchDetector");29var pitch = pitchDetector.getPitch();

Using AI Code Generation

1const WPTK = require('wptoolkit');2const wptk = new WPTK();3const pitchDetector = wptk.getPitchDetector('yinfft');4const audioBuffer = getAudioBuffer();5const pitch = pitchDetector.getPitch(audioBuffer);6const WPTK = require('wptoolkit');7const wptk = new WPTK();8const pitchDetector = wptk.getPitchDetector('yinfft');9const audioBuffer = getAudioBuffer();10const pitch = pitchDetector.getPitch(audioBuffer);11const WPTK = require('wptoolkit');12const wptk = new WPTK();13const pitchDetector = wptk.getPitchDetector('yinfft');14const audioBuffer = getAudioBuffer();15const pitch = pitchDetector.getPitch(audioBuffer);16const WPTK = require('wptoolkit');17const wptk = new WPTK();18const pitchDetector = wptk.getPitchDetector('yinfft');19const audioBuffer = getAudioBuffer();20const pitch = pitchDetector.getPitch(audioBuffer);21const WPTK = require('wptoolkit');22const wptk = new WPTK();23const pitchDetector = wptk.getPitchDetector('yinfft');24const audioBuffer = getAudioBuffer();25const pitch = pitchDetector.getPitch(audioBuffer);26const WPTK = require('wptoolkit');27const wptk = new WPTK();28const pitchDetector = wptk.getPitchDetector('yinfft');29const audioBuffer = getAudioBuffer();30const pitch = pitchDetector.getPitch(audioBuffer);

Using AI Code Generation

1var wptoolkit = require('wptoolkit');2var fs = require('fs');3var audioFile = "test.wav";4var pitchDetector = wptoolkit.getPitchDetector("yin", audioFile);5var pitch = pitchDetector.getPitch();6var frequency = pitch.getFrequency();7var probability = pitch.getProbability();8var pitchValue = pitch.getValue();9fs.writeFile('test.csv', pitchValue, (err) => {10  if (err) throw err;11  console.log('The file has been saved!');12});13{ Error: spawn sox ENOENT14    at exports._errnoException (util.js:1026:11)15    at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)16    at onErrorNT (internal/child_process.js:359:16)17    at _combinedTickCallback (internal/process/next_tick.js:74:11)18    at process._tickDomainCallback (internal/process/next_tick.js:122:9)19  spawnargs: [ 'test.wav', '-c', '1', '-r', '16000', '-t', 'wav', '-' ] }

Using AI Code Generation

1var pitchDetector = new PitchDetector();2pitchDetector.getPitchDetector(function(detector) { console.log(detector); });3function PitchDetector() {4    this.getPitchDetector = function(callback) {5        callback(new PitchDetector());6    }7}

Using AI Code Generation

1var pitchDetector = new PitchDetector();2pitchDetector.getPitchDetector(function (pitchDetector) {3    pitchDetector.onPitchDetected = function (pitch) {4        socket.emit('pitch', pitch);5    };6});7var io = require('socket.io').listen(3000);8io.sockets.on('connection', function (socket) {9    socket.on('pitch', function (pitch) {10        io.sockets.emit('pitch', pitch);11    });12});13socket.on('pitch', function (pitch) {14});15socket.on('pitch', function (pitch) {16});17io.sockets.on('connection', function (socket) {18    socket.on('pitch', function (pitch) {19        io.sockets.emit('pitch', pitch);20    });21});22I understand that io.sockets.on('connection', function (socket) is a function that gets called when a client connects to the server. I also understand that socket.on('pitch', function (pitch) is a function that gets called when the server receives a pitch from the client. However, I don't understand what the io.sockets.emit('pitch', pitch) function is doing. Is it sending the pitch back to the client? If so, why is it sending the pitch back to the client? Is it sending the pitch to all the clients that are connected to the server? If so, why is it sending the pitch to all the clients? I am confused because I thought that the client was the one that was sending

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