54 lines
1.2 KiB
Plaintext
54 lines
1.2 KiB
Plaintext
import processing.sound.*;
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import processing.serial.*;
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FFT fft;
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AudioIn in;
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int bands = 4;
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float[] spectrum = new float[bands];
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Serial arduino;
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void setup() {
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size(600, 300);
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background(255);
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frameRate(14);
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// Create an Input stream which is routed into the Amplitude analyzer
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fft = new FFT(this, bands);
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in = new AudioIn(this, 0);
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// start the Audio Input
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in.start();
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// patch the AudioIn
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fft.input(in);
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String portName = Serial.list()[0]; //change the 0 to a 1 or 2 etc. to match your port
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arduino = new Serial(this, portName, 9600);
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}
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void draw() {
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background(255);
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fft.analyze(spectrum);
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for (int i = 0; i < bands; i++) {
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// The result of the FFT is normalized
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// draw the line for frequency band i scaling it up by 5 to get more amplitude.
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if (i == 0) {
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fill(255, 0, 0);
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int val = (int)map(spectrum[i], 0, 1, 0, 255);
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arduino.write("1c" + val + "w");
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} else if (i == 1) {
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int val = (int)map(spectrum[i], 0, 1, 0, 255);
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fill(0, 255, 0);
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arduino.write("5c" + val*2 + "w");
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} else if (i == 2) {
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int val = (int)map(spectrum[i], 0, 1, 0, 255);
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fill(0, 0, 255);
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arduino.write("9c" + val*3 + "w");
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}
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rect(i * 200, 0, 200, spectrum[i] * height);
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}
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}
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