Minim: Is there a way to getLineIn() without pushing audio back out?
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Core Library Questions
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2 years ago
For me (10.6.6 OSX) this example pushes audio effectively creating an audio feedback loop. Is there a way to disable the audio's output? I would like to visualize the mic's feed without pushing it's audio back out. I looked through the source and didn't see something I that could resolve this. Here's the example:
—
http://jonobr1.com/
- /**
- * Get Line In
- * by Damien Di Fede.
- *
- * This sketch demonstrates how to use the <code>getLineIn</code> method of
- * <code>Minim</code>. This method returns an <code>AudioInput</code> object.
- * An <code>AudioInput</code> represents a connection to the computer's current
- * record source (usually the line-in) and is used to monitor audio coming
- * from an external source. There are five versions of <code>getLineIn</code>:
- * <pre>
- * getLineIn()
- * getLineIn(int type)
- * getLineIn(int type, int bufferSize)
- * getLineIn(int type, int bufferSize, float sampleRate)
- * getLineIn(int type, int bufferSize, float sampleRate, int bitDepth)
- * </pre>
- * The value you can use for <code>type</code> is either <code>Minim.MONO</code>
- * or <code>Minim.STEREO</code>. <code>bufferSize</code> specifies how large
- * you want the sample buffer to be, <code>sampleRate</code> specifies the
- * sample rate you want to monitor at, and <code>bitDepth</code> specifies what
- * bit depth you want to monitor at. <code>type</code> defaults to <code>Minim.STEREO</code>,
- * <code>bufferSize</code> defaults to 1024, <code>sampleRate</code> defaults to
- * 44100, and <code>bitDepth</code> defaults to 16. If an <code>AudioInput</code>
- * cannot be created with the properties you request, <code>Minim</code> will report
- * an error and return <code>null</code>.
- *
- * When you run your sketch as an applet you will need to sign it in order to get an input.
- *
- * Before you exit your sketch make sure you call the <code>close</code> method
- * of any <code>AudioInput</code>'s you have received from <code>getLineIn</code>.
- */
- import ddf.minim.*;
- Minim minim;
- AudioInput in;
- void setup()
- {
- size(512, 200, P2D);
- minim = new Minim(this);
- minim.debugOn();
- // get a line in from Minim, default bit depth is 16
- in = minim.getLineIn(Minim.STEREO, 512);
- }
- void draw()
- {
- background(0);
- stroke(255);
- // draw the waveforms
- for(int i = 0; i < in.bufferSize() - 1; i++)
- {
- line(i, 50 + in.left.get(i)*50, i+1, 50 + in.left.get(i+1)*50);
- line(i, 150 + in.right.get(i)*50, i+1, 150 + in.right.get(i+1)*50);
- }
- }
- void stop()
- {
- // always close Minim audio classes when you are done with them
- in.close();
- minim.stop();
- super.stop();
- }
—
http://jonobr1.com/
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