sound
Class Oscillator

java.lang.Object
  sound.Oscillator

public class Oscillator
extends java.lang.Object

Constructor Summary

Oscillator(double frequency, int length)

Method Summary

double	actualFrequency()
static double[]	add(double[] a, double[] b)
static void	asynchronousToneTest()
static void	beep() Plays the system beep.
void	debug()
double[]	getAM(double[] sourceSignal)
static javax.sound.sampled.AudioFormat	getAudioFormat()
double[]	getCosineWave()
double	getDuration()
double[]	getFM()
double[]	getFM(double modulationIndex)
double	getFrequency()
double[]	getRandomWave()
int	getSampleRate()
double[]	getSawWave()
double[]	getSineWave()
static double[]	getSineWave(int frequency1, int frequency2, long duration) Get a tone.
double[]	getSquareWave()
double[]	getTriangleWave()
static void	main(java.lang.String[] arg)
static void	mix(double[] a, double[] b) a = (a + b)/2 A and b are vectors of the same length.
static void	mix(double[] a, double[] b, double[] c) a = (a + b + c)/3 A, b and c are vectors of the same length.
static double[]	mult(double[] d, double a)
static void	playAndDisplayTone(int frequency)
static void	playAtonalComposition(double[] durations, double[] frequencies)
static void	playFmTone(int freq, int durationInMs, double modulationIndex)
static void	playInputStream(java.io.InputStream bis)
static void	playLinearData(double[] d)
static void	playTone(int frequency)
static void	playTone(int f, int numberOfSamples)
void	setModulationFrequency(double fm)
void	setModulationIndex(double I)
int	sign(double d)
static void	testAudioDft()
static void	testAudioFft()
static void	testPlayAndDisplayTone()
static void	testPlayTone()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Oscillator

public Oscillator(double frequency,
                  int length)

Parameters:

frequency - is in hz

length - number of samples in the array.

Method Detail

beep

public static void beep()

Plays the system beep. I only put this here because I did not know where else to put it. After all, it uses the AWT tool kit, and how does that make any sense?

testPlayTone

public static void testPlayTone()

playTone

public static void playTone(int f,
                            int numberOfSamples)

asynchronousToneTest

public static void asynchronousToneTest()

testPlayAndDisplayTone

public static void testPlayAndDisplayTone()

playAndDisplayTone

public static void playAndDisplayTone(int frequency)

playTone

public static void playTone(int frequency)

actualFrequency

public double actualFrequency()

debug

public void debug()

getCosineWave

public double[] getCosineWave()

getSineWave

public double[] getSineWave()

getRandomWave

public double[] getRandomWave()

Returns:

noise at 0.98 amplitude

getSineWave

public static double[] getSineWave(int frequency1,
                                   int frequency2,
                                   long duration)

Get a tone.

Parameters:

frequency1 - the first tone

frequency2 - the second tone

duration - the duration, in ms

Returns:

an array that ranges from -1 to 1

getSquareWave

public double[] getSquareWave()

getSawWave

public double[] getSawWave()

getTriangleWave

public double[] getTriangleWave()

sign

public int sign(double d)

getDuration

public double getDuration()

getSampleRate

public int getSampleRate()

getFrequency

public double getFrequency()

setModulationIndex

public void setModulationIndex(double I)

setModulationFrequency

public void setModulationFrequency(double fm)

getFM

public double[] getFM()

getFM

public double[] getFM(double modulationIndex)

getAM

public double[] getAM(double[] sourceSignal)

testAudioFft

public static void testAudioFft()

testAudioDft

public static void testAudioDft()

mult

public static double[] mult(double[] d,
                            double a)

add

public static double[] add(double[] a,
                           double[] b)

playLinearData

public static void playLinearData(double[] d)
                           throws javax.sound.sampled.LineUnavailableException,
                                  java.io.IOException

Throws:

javax.sound.sampled.LineUnavailableException

java.io.IOException

playInputStream

public static void playInputStream(java.io.InputStream bis)
                            throws javax.sound.sampled.LineUnavailableException,
                                   java.io.IOException

Throws:

javax.sound.sampled.LineUnavailableException

java.io.IOException

getAudioFormat

public static javax.sound.sampled.AudioFormat getAudioFormat()

mix

public static void mix(double[] a,
                       double[] b)

a = (a + b)/2

A and b are vectors of the same length.

Parameters:

a - is vector changed by the invocation

b - is a vector that is added to a.

mix

public static void mix(double[] a,
                       double[] b,
                       double[] c)

a = (a + b + c)/3

A, b and c are vectors of the same length.

Parameters:

a - is vector changed by the invocation

b - is a vector that is added to a.

c - is a vector that is added to a.

playAtonalComposition

public static void playAtonalComposition(double[] durations,
                                         double[] frequencies)
                                  throws javax.sound.sampled.LineUnavailableException,
                                         java.io.IOException

Throws:

javax.sound.sampled.LineUnavailableException

java.io.IOException

playFmTone

public static void playFmTone(int freq,
                              int durationInMs,
                              double modulationIndex)
                       throws java.io.IOException,
                              javax.sound.sampled.LineUnavailableException

Throws:

java.io.IOException

javax.sound.sampled.LineUnavailableException

main

public static void main(java.lang.String[] arg)
                 throws java.io.IOException,
                        javax.sound.sampled.LineUnavailableException,
                        java.text.ParseException

Throws:

java.io.IOException

javax.sound.sampled.LineUnavailableException

java.text.ParseException