Getting Data from the Music Visualiser

0. Access the bars array.

  for (let i = 0; i < mV.bars.length; i++){  //For each bar in the music visualisation,
    drawBar(i, mV.bars[i], mV.bars.length);  //Draw that bar to the screen by some function.
  }

1. Take a sample of the sound data array.

• Returns the average of a small sample of the soundDataArray.
• Index declares which sample you want, the numSampleSections is
• how many sections you've split the array up into.

  getSampleOfSoundData(index, numSampleSections)

2. Get the average amplitude of the music.

• Returns the overall amplitude of the soundDataArray.
• The result is normalized between 0 and 1, where 0 is min, 1 is max.

  getAmplitude()

3. Get amplitude of the bass.

• Returns the average amplitude of the lowest 12th of the frequency spectrum.

getBass()

4. Get amplitude of the midrange.

• Returns the average amplitude of the middle third of the frequency spectrum.

getMidrange()

5. Get amplitude of the treble.

• Returns the average amplitude of the upper third of the frequency spectrum.

getTreble()