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Minim |
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resonance |
Description The resonance of the filter, expressed as a normalized value [0,1].Signature UGen.UGenInput resonance Related MoogFilterUGen.UGenInput Example /* moogFilterExample<br/>
* is an example of using a MoogFilter to filter white noise.<br/>
* Use the mouse to control the cutoff frequency and resonance of the filter.<br/>
* Press 1 to set it to low pass<br/>
* Press 2 to set it to high pass<br/>
* Press 3 to set it to band pass<br/>
* <p>
* For more information about Minim and additional features,
* visit http://code.compartmental.net/minim/
* <p>
* author: Damien Di Fede
*/
// import everything necessary to make sound.
import ddf.minim.*;
import ddf.minim.ugens.*;
// create all of the variables that will need to be accessed in
// more than one methods (setup(), draw(), stop()).
Minim minim;
AudioOutput out;
MoogFilter moog;
// setup is run once at the beginning
void setup()
{
// initialize the drawing window
size(300, 300);
// initialize the minim and out objects
minim = new Minim(this);
out = minim.getLineOut();
// construct a law pass MoogFilter with a
// cutoff frequency of 1200 Hz and a resonance of 0.5
moog = new MoogFilter( 1200, 0.5 );
// we will filter a white noise source,
// which will allow us to hear the result of filtering
Noise noize = new Noise( 0.5f );
// send the noise through the filter
noize.patch( moog ).patch( out );
}
// we'll control the frequency and resonance of the filter
// using the position of the mouse, in typical x-y controller fashion
void mouseMoved()
{
float freq = constrain( map( mouseX, 0, width, 200, 12000 ), 200, 12000 );
float rez = constrain( map( mouseY, height, 0, 0, 1 ), 0, 1 );
moog.frequency.setLastValue( freq );
moog.resonance.setLastValue( rez );
}
void keyPressed()
{
if ( key == '1' ) moog.type = MoogFilter.Type.LP;
if ( key == '2' ) moog.type = MoogFilter.Type.HP;
if ( key == '3' ) moog.type = MoogFilter.Type.BP;
}
// draw is run many times
void draw()
{
// 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);
}
text( "Filter type: " + moog.type, 10, 225 );
text( "Filter cutoff: " + moog.frequency.getLastValue() + " Hz", 10, 245 );
text( "Filter resonance: " + moog.resonance.getLastValue(), 10, 265 );
}
Usage Web & Application |