Wavesurfer.js: How to get peaks with recommended Audiowaveform program?

[Gerlie15]

Hi.
I understand that loading prerendered image to load function requires an array of peaks, but cannot find out how to do it with recommended audiowaveform program. I get .png or .dat or whatever format, but don't know how to get peaks from these formats. Any advice?

Thanks for all the help.

[entonbiba]

@ognjiscar if you need to dynamicly generate the peaks data, you can use a server to generate it with php or even nodejs.

[Gerlie15]

I found the solution to my problem: In audiowaveform (bbc) program you get peaks data from 0-127. I normalized it (0-1 float ) and imported it into load function. Now it's working fine.

[BlazPerus]

@ognjiscar How did you normalize?

[Gerlie15]

Divide all numbers with maximum number in the table.