Now we'll take a look at audioArray

Now we'll take a look at audioArray, the parameter of the listener function. This array has a fixed length of 128, containing data for the left and right channel. Data for the left channel can be found in the first 63 buckets in form of positive floats (which may go beyond 1.0, so you should clamp them if necessary!). Lower frequencies are at the beginning of the array. The right channel can be found in the buckets 64 to 127 inclusive. Here the low frequencies are near 64 and up and the high ones again at the end of the array.The following snippet demonstrates how these buckets can be iterated: