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setValue |
Description Set the amplitude of this Multiplier.Signature void setValue(float value) Parameters value — float: the new amplitude for the MultiplierReturns None Related amplitudeMultiplier UGen Example /** 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); } } Usage Web & Application |