Package wellen.dsp

Class ADSR

java.lang.Object

wellen.dsp.ADSR

All Implemented Interfaces:

DSPNodeOutput

public class ADSR
extends Object
implements DSPNodeOutput

envelope with (A)ttack (D)ecay (S)ustain (R)elease stages: ADSR

it is usually used to control the amplitude of an *oscillator*.

                |-----›|--›|   |--›|
                |---A--|-D-|-S-|-R-|
                |      /\
                |     /  \
                |    /    \_____
                |   /        ^  \
                |  /         |   \
                | /          |    \
                |/___________|_____\
                |
                |Press          |Release
  

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ADSR_DIAGRAM	ASCII diagram of an ADSR envelope.

Constructor Summary

Constructors

Constructor	Description
ADSR()
ADSR(int pSamplingRate)

Method Summary

Modifier and Type	Method	Description
float	get_attack()
float	get_decay()
float	get_release()
float	get_sustain()
float	output()	returns the output signal.
void	set_adsr(float pAttack, float pDecay, float pSustain, float pRelease)
void	set_attack(float pAttack)
void	set_decay(float pDecay)
void	set_release(float pRelease)
void	set_sustain(float pSustain)
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Field Details

ADSR_DIAGRAM

public static final String ADSR_DIAGRAM

ASCII diagram of an ADSR envelope.

See Also:

• Constant Field Values

Constructor Details

ADSR

public ADSR(int pSamplingRate)

Parameters:

pSamplingRate - sampling rate in Hz.

ADSR

public ADSR()

Method Details

output

public float output()

Description copied from interface: DSPNodeOutput

returns the output signal.

Specified by:

output in interface DSPNodeOutput

Returns:

current envelope value

start

public void start()

stop

public void stop()

get_attack

public float get_attack()

Returns:

attack value in seconds

set_attack

public void set_attack(float pAttack)

Parameters:

pAttack - attack value in seconds

set_adsr

public void set_adsr(float pAttack,
 float pDecay,
 float pSustain,
 float pRelease)

Parameters:

pAttack - attack value in seconds

pDecay - decay value in seconds

pSustain - sustain value in seconds

pRelease - release value in seconds

get_decay

public float get_decay()

Returns:

decay value in seconds

set_decay

public void set_decay(float pDecay)

Parameters:

pDecay - decay value in seconds

get_sustain

public float get_sustain()

Returns:

sustain value in seconds

set_sustain

public void set_sustain(float pSustain)

Parameters:

pSustain - sustain value in seconds

get_release

public float get_release()

Returns:

release value in seconds

set_release

public void set_release(float pRelease)

Parameters:

pRelease - release value in seconds