Web Audio API analyser node getByteFrequencyData returning blank array

Question

I\'m trying to access FFT data from the analyser node using analyser.getByteFrequencyData(array) but it seems to return a blank array:

var array         


        

Answer 1

Check if smoothingTimeConstant is set to 1. When it is so, getFloatFrequencyData always returns an array of zeroes.