Musical scale: Difference between revisions
Content added Content deleted
(add RPL) |
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* Java can play sounds without external libraries. |
* Java can play sounds without external libraries. |
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*/ |
*/ |
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public class MusicalScale { |
public final class MusicalScale { |
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public static void main(String[] |
public static void main(String[] aArgs) { |
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List<Double> frequencies = List.of( 261.63, 293.66, 329.63, 349.23, 392.00, 440.00, 493.88, 523.25 ); |
List<Double> frequencies = List.of( 261.63, 293.66, 329.63, 349.23, 392.00, 440.00, 493.88, 523.25 ); |
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final int duration = 500; |
final int duration = 500; |
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} |
} |
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private static void musicalTone(double aFrequency, int aDuration, int aVolume) |
private static void musicalTone(double aFrequency, int aDuration, int aVolume) { |
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byte[] buffer = new byte[1]; |
byte[] buffer = new byte[1]; |
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AudioFormat audioFormat = getAudioFormat(); |
AudioFormat audioFormat = getAudioFormat(); |
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try ( SourceDataLine sourceDataLine = AudioSystem.getSourceDataLine(audioFormat) ) { |
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sourceDataLine.open(audioFormat); |
sourceDataLine.open(audioFormat); |
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sourceDataLine.start(); |
sourceDataLine.start(); |
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for ( int i = 0; i < aDuration * 8; i++ ) { |
for ( int i = 0; i < aDuration * 8; i++ ) { |
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double angle = i / ( SAMPLE_RATE / aFrequency ) * 2 * Math.PI; |
double angle = i / ( SAMPLE_RATE / aFrequency ) * 2 * Math.PI; |
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buffer[0] = (byte) ( Math.sin(angle) * 127 * aVolume ); |
buffer[0] = (byte) ( Math.sin(angle) * 127 * aVolume ); |
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sourceDataLine.write(buffer, BYTE_OFFSET, buffer.length); |
sourceDataLine.write(buffer, BYTE_OFFSET, buffer.length); |
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} |
} |
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sourceDataLine.drain(); |
sourceDataLine.drain(); |
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sourceDataLine.stop(); |
sourceDataLine.stop(); |
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sourceDataLine.close(); |
sourceDataLine.close(); |
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} catch (LineUnavailableException exception) { |
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exception.printStackTrace(); |
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} |
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} |
} |
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