ABSTRACT
In this chapter, you will learn how to use the Analyser node to create a spectrum analyzer that displays real-time amplitude information of audio signals across a collection of frequency bands . The Web Audio API includes a node named Analyser that gives you real-time frequency and time domain information about audio input sources . This information can be used to create custom visual representations of audio signals that include (but are not limited to) spectrum analyzers, phase scopes, and waveform renders .
