TensorFlow-Audio-Recognition-Tutorial-Fixed

The code fixed of the example in https://codelabs.developers.google.com/codelabs/tensorflowjs-audio-codelab/index.html

We only need to change this part of the code in Speech-Recognition lines 247 to

  case 1:
      //This needs to b changed to our System
      // this.sampleRateHz = 48000;
      // this.audioContext = new AudioContext({ sampleRate: this.sampleRateHz });
      this.audioContext = new AudioContext();
      this.sampleRateHz = this.audioContext.sampleRate;
      console.log("Value of sampleRateHz");
      console.log(this.sampleRateHz);
      console.log("Value of audioContext");
      console.log(this.audioContext);
      // console.log(a.sent());
      return (
          (t.stream = a.sent()),
          (this.audioContext),
          this.audioContext.sampleRate !== this.sampleRateHz && console.warn("Mismatch in sampling rate: Expected: " + this.sampleRateHz + "; Actual: " + this.audioContext.sampleRate),
          (r = this.audioContext.createMediaStreamSource(this.stream)),
          (this.analyser = this.audioContext.createAnalyser()),
          (this.analyser.fftSize = 2 * this.fftSize),
          (this.analyser.smoothingTimeConstant = 0),
          r.connect(this.analyser),
          (this.freqDataQueue = []),
          (this.freqData = new Float32Array(this.fftSize)),
          this.includeRawAudio && ((this.timeDataQueue = []), (this.timeData = new Float32Array(this.fftSize))),
          (n = Math.max(1, Math.round(this.numFrames * (1 - this.overlapFactor)))),
          (this.tracker = new m(n, Math.round(this.suppressionTimeMillis / this.frameDurationMillis))),
          (this.frameIntervalTask = setInterval(this.onAudioFrame.bind(this), (this.fftSize / this.sampleRateHz) * 1e3)), [2]
      );

Have a nice developing jornal, let me know any question, i will put here my project working, so you are free to download and make your own experiments.

And the solution of Mismatch in sampling rate for speech-commands in TensorFlow.

You can see the problem that is on tensorflow/tfjs#3845 (comment)