net.beadsproject.beads.data

Class Pitch

java.lang.Object

net.beadsproject.beads.data.Pitch

public abstract class Pitch
extends java.lang.Object

A set of static fields and utility methods associated with pitch.

Author:

ollie

Field Summary

Fields

Modifier and Type	Field and Description
static int[]	circleOfFifths The circle of fifths relative to root.
static int[]	dorian The dorian scale relative to root.
static float	LOG2 The constant log(2) = 0.6931472.
static int[]	major The major scale relative to root.
static int[]	minor The minor scale relative to root.
static int[]	pentatonic Pentatonic.
static java.lang.String[]	pitchNames Pitch names for scale starting at C.

Constructor Summary

Constructors

Constructor and Description
Pitch()

Method Summary

Modifier and Type	Method and Description
static float	forceFrequencyToScale(float freq, int[] scale)
static int	forceToScale(int pitch, int[] scale) Takes a pitch and returns that pitch adjusted downwards to the nearest pitch in the given scale.
static int	forceToScale(int pitch, int[] scale, int notesPerOctave) Takes a pitch and returns that pitch adjusted downwards to the nearest pitch in the given scale.
static float	ftom(float frequency) Convert frequency to MIDI note number.
static float	mtof(float midi) Convert MIDI note number to frequency.

Methods inherited from class java.lang.Object

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

Field Detail

LOG2

public static final float LOG2

The constant log(2) = 0.6931472.

See Also:

Constant Field Values

pitchNames

public static final java.lang.String[] pitchNames

Pitch names for scale starting at C.

dorian

public static final int[] dorian

The dorian scale relative to root.

major

public static final int[] major

The major scale relative to root.

minor

public static final int[] minor

The minor scale relative to root.

circleOfFifths

public static final int[] circleOfFifths

The circle of fifths relative to root.

pentatonic

public static final int[] pentatonic

Pentatonic.

Constructor Detail

Pitch

public Pitch()

Method Detail

ftom

public static final float ftom(float frequency)

Convert frequency to MIDI note number.

Parameters:

frequency - the required frequency.

Returns:

the resulting MIDI note number.

mtof

public static final float mtof(float midi)

Convert MIDI note number to frequency.

Parameters:

midi - the required MIDI note number.

Returns:

the resulting frequency.

forceToScale

public static final int forceToScale(int pitch,
                                     int[] scale,
                                     int notesPerOctave)

Takes a pitch and returns that pitch adjusted downwards to the nearest pitch in the given scale.

Parameters:

pitch - the pitch to modify.

scale - the scale to use.

notesPerOctave - how many notes in your octave (12 if you're not sure).

Returns:

adjusted pitch.

forceToScale

public static final int forceToScale(int pitch,
                                     int[] scale)

Takes a pitch and returns that pitch adjusted downwards to the nearest pitch in the given scale. Assumes 12 pitches per octave.

Parameters:

pitch - the pitch to modify.

scale - the scale to use.

Returns:

adjusted pitch.

forceFrequencyToScale

public static final float forceFrequencyToScale(float freq,
                                                int[] scale)