Reference+
Class Name
Waveform
Description
This is a Waveform analyzer. It returns the waveform of an
audio stream the moment it is queried with the analyze()
method.
Note that by default all sound generators (including microphone capture from
AudioIn
) have an amplitude of 1, which means that the values of
their waveform will be numbers in the range [-0.5, 0.5]
.
Examples
import processing.sound.*; SoundFile sample; Waveform waveform; int samples = 100; public void setup() { size(640, 360); background(255); sample = new SoundFile(this, "beat.aiff"); sample.loop(); waveform = new Waveform(this, samples); waveform.input(sample); } public void draw() { background(0); stroke(255); strokeWeight(2); noFill(); waveform.analyze(); beginShape(); for(int i = 0; i < samples; i++) { vertex( map(i, 0, samples, 0, width), map(waveform.data[i], -1, 1, 0, height) ); } endShape(); }
Constructors
Waveform(parent, nsamples)
Parameters
parent
(PApplet)
typically use "this"nsamples
(int)
number of waveform samples that you want to be able to read at once (a positive integer).
Methods
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