mohayonao / timbre

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FFT and the values ​​of the array #6

Open iacoposk8 opened 11 years ago

iacoposk8 commented 11 years ago

In this example: http://mohayonao.github.com/timbre/documents/fft.html

in the function WaveViewer.animate, there is the following code:

for (i = step, imax = wave.length; i < imax; i += step) { y = (wave[i] - min) / (max - min); context.lineTo(i * dx, height - (height * y)); }

wave in the array (I think) there is a list of volumes achieved by the different frequencies at that time from the audio file

1) these volumes in which units are? decibels? 2) for example, in the array, the position 35 corresponds to that frequency? thanks :)