Package eu.bandm.music.applications.harm

Class FnSound

java.lang.Object

eu.bandm.music.applications.harm.FnSound

class FnSound
extends Object

Audio back-end for the harmonic frequency calculator. Manages one FnSound.SoundLine per FnGui.NumberPanel and a sequencer that steps through the phases on a tempo clock.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	FnSound.Seq	Realises the stepping through the phases.
static enum	FnSound.sound	Selects between different sound methods.
(package private) class	FnSound.SoundLine	One synthesis voice, driven by a FnGui.NumberPanel.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Process	allLinesSteps	Chain of per-line step processes; null until first line added.
(package private) DoubleSignalSource	allLinesValues	Summed signal of all lines; null until first line is added.
(package private) final DoubleEnvelope	envPizzicato	Envelope curve for the function generator output.
(package private) final FnGui	gui	Owning GUI; used to access rows and controls.
(package private) final DoublePost	hertzPost	Base frequency shared by all synthesis lines.
(package private) boolean	inPause	Whether a pause is currently played.
(package private) int	phase	Index of the currently playing sequencer phase.
(package private) int	phaseCount	Cardinality of phases; cached for efficiency.
(package private) final BitSet	phases	Union of phase bits from all rows; drives button enables.
(package private) final ConstantRealtimeContext	realtimeContext	Overall realtime context for sound synthesis.
(package private) static final double	SAMPLINGRATE	Overall sampling rate for sound synthesis.
(package private) final BitSet	selectedPhases	Phases selected by the user via the footer buttons.
(package private) final EnumPost<FnSound.sound>	soundSelect	Synthesis algorithm selector.
(package private) static final int	TABLE_SIZE	Wavetable size for the function generator.
(package private) final IntPost	volumePost	Master output volume level (0–100).
(package private) final DoubleHarmonicSpectrum.DiffTable	WAVE_SAW	Wavetable for saw-wave synthesis.
(package private) final DoubleHarmonicSpectrum.DiffTable	WAVE_SINE	Wavetable for pure-sine synthesis.
(package private) final DoubleHarmonicSpectrum.DiffTable	WAVE_SQUARE	Wavetable for square-wave synthesis.
(package private) final DoubleHarmonicSpectrum.DiffTable	WAVE_TRIANGLE	Wavetable for triangle-wave synthesis.

Constructor Summary

Constructors

Constructor	Description
FnSound(FnGui gui, DoublePost hertzPost, EnumPost<FnSound.sound> soundSelect, IntPost volumePost)	Wires the audio back-end to the GUI.

Method Summary

Modifier and Type	Method	Description
(package private) FnSound.SoundLine	addSoundLine()	Creates and registers a new synthesis voice.
(package private) void	buildOutput(BooleanSignalSource muted)	Builds the audio output pipeline and opens the sound device.
(package private) void	nextPhase()	Advances phase, restarts the envelope, notifies all rows.
(package private) void	start()	Starts the audio output thread.

Methods inherited from class java.lang.Object

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

Field Details

SAMPLINGRATE

static final double SAMPLINGRATE

Overall sampling rate for sound synthesis. Control rate will be derived by division.

See Also:

• Constant Field Values

TABLE_SIZE

static final int TABLE_SIZE

Wavetable size for the function generator.

See Also:

• Constant Field Values

gui

final FnGui gui

Owning GUI; used to access rows and controls.

hertzPost

final DoublePost hertzPost

Base frequency shared by all synthesis lines.

soundSelect

final EnumPost<FnSound.sound> soundSelect

Synthesis algorithm selector.

volumePost

final IntPost volumePost

Master output volume level (0–100).

realtimeContext

final ConstantRealtimeContext realtimeContext

Overall realtime context for sound synthesis. Control rate will be derived by division.

envPizzicato

final DoubleEnvelope envPizzicato

Envelope curve for the function generator output.

WAVE_SINE

final DoubleHarmonicSpectrum.DiffTable WAVE_SINE

Wavetable for pure-sine synthesis.

WAVE_SQUARE

final DoubleHarmonicSpectrum.DiffTable WAVE_SQUARE

Wavetable for square-wave synthesis.

WAVE_TRIANGLE

final DoubleHarmonicSpectrum.DiffTable WAVE_TRIANGLE

Wavetable for triangle-wave synthesis.

WAVE_SAW

final DoubleHarmonicSpectrum.DiffTable WAVE_SAW

Wavetable for saw-wave synthesis.

allLinesSteps

Process allLinesSteps

Chain of per-line step processes; null until first line added.

allLinesValues

DoubleSignalSource allLinesValues

Summed signal of all lines; null until first line is added.

phases

final BitSet phases

Union of phase bits from all rows; drives button enables.

phaseCount

int phaseCount

Cardinality of phases; cached for efficiency.

phase

int phase

Index of the currently playing sequencer phase.

inPause

boolean inPause

Whether a pause is currently played.

selectedPhases

final BitSet selectedPhases

Phases selected by the user via the footer buttons.

Constructor Details

FnSound

FnSound(FnGui gui,
 DoublePost hertzPost,
 EnumPost<FnSound.sound> soundSelect,
 IntPost volumePost)

Wires the audio back-end to the GUI.

Parameters:

gui - owning GUI frame

hertzPost - base frequency post

soundSelect - synthesis-mode selector

volumePost - master volume post

Method Details

addSoundLine

FnSound.SoundLine addSoundLine()

Creates and registers a new synthesis voice.

Returns:

the newly created FnSound.SoundLine

buildOutput

void buildOutput(BooleanSignalSource muted)

Builds the audio output pipeline and opens the sound device.

Parameters:

muted - replaces output with silence when selected

start

void start()

Starts the audio output thread.

nextPhase

void nextPhase()

Advances phase, restarts the envelope, notifies all rows. FIMXE radiobuttons ? : The current state of the phases may be an arbitrary set due to manual switching, and is cleared to the cyclic successor of phase.