How to make a spectrum analyzer in soundmanager2?

Question

JavaScript

I want to do something like this , but I don’t know where to start, can someone tell me if there are any ready-made libraries, the screen is taken from this site www.radiorecord.ru/player there, as I understand it, the sound is also made on soundmanager, judging by the console

Answer 1

I don't want to seem smart, but you need to deal with this https://ru.wikipedia.org/wiki/%D0%91%D1%8B%D1%81%D...
then you will understand how to do it