Examples |
/**
This is an example of using a Multiplier UGen, which performs the very simple operation of
multiplying the incoming signal by the current value of its amplitude input.
<p>
Move the mouse left and right to change the value of the Multiplier.
All the way left is 0.1 and all the way right is 1.
<p>
For more information about Minim and additional features,<br/>
visit http://code.compartmental.net/minim/
<p>
author: Damien Di Fede
*/
import ddf.minim.*;
import ddf.minim.ugens.*;
Minim minim;
AudioOutput out;
Oscil osc;
Multiplier multiplier;
void setup()
{
// setup the size of the app
size(640, 200);
// create our Minim object for loading audio
minim = new Minim(this);
// get a line out from Minim. It's important that the file is the same audio format
// as our output (i.e. same sample rate, number of channels, etc).
out = minim.getLineOut();
osc = new Oscil( 440, 1 );
multiplier = new Multiplier( 0.5f );
// normally we wouldn't use a multiplier with an Oscil like this
// because we could simply set the amplitude of the Oscil itself.
osc.patch( multiplier ).patch( out );
}
// draw is run many times
void draw()
{
// map the mouse position to a new value for the multiplier
float value = map(mouseX, 0, width, 0.1, 1);
// set the new value.
// this is equivalent to multiplier.amplitude.setLastValue( value )
// you'll also notice this causes audible clicks if you move the mouse quickly
// to keep that from happening, you will usually want to use a Line patched
// to the Multiplier's amplitude input.
multiplier.setValue( value );
// erase the window to black
background( 0 );
// draw using a white stroke
stroke( 255 );
// draw the waveforms
for( int i = 0; i < out.bufferSize() - 1; i++ )
{
// find the x position of each buffer value
float x1 = map( i, 0, out.bufferSize(), 0, width );
float x2 = map( i+1, 0, out.bufferSize(), 0, width );
// draw a line from one buffer position to the next for both channels
line( x1, 50 + out.left.get(i)*50, x2, 50 + out.left.get(i+1)*50);
line( x1, 150 + out.right.get(i)*50, x2, 150 + out.right.get(i+1)*50);
}
}
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