jass.patches
Class CombReverb

java.lang.Object
  jass.engine.Out
      jass.engine.InOut
          jass.patches.CombReverb

All Implemented Interfaces:

Sink, Source

public class CombReverb
extends InOut

CombReverb as Moorers reverb. See e.g.

Author:

Kees van den Doel (kvdoel@cs.ubc.ca)

Field Summary

protected float	a
protected AllPass	allPass
protected float	allpassDelay
protected float[]	combDelays
protected float	dryToWet
protected Mixer	endMixer
protected float[]	g
protected LowPassComb[]	lpCombs
protected Mixer	mixer
protected int	nchannels
protected int	nCombs
protected float[]	R
protected float	srate

Fields inherited from class jass.engine.InOut

sourceContainer, sourcePassivity, srcBuffers

Fields inherited from class jass.engine.Out

buf, bufferSize, bufOld, lock

Constructor Summary

CombReverb(int bufferSize)
Create.

CombReverb(int bufferSize, float srate, int nCombs)
Create.

CombReverb(int bufferSize, float srate, int nCombs, int nchannels)
Create.

CombReverb(int bufferSize, int nchannels)
Create.

Method Summary

java.lang.Object	addSource(Source s) Add source to Sink.
protected void	computeBuffer() Compute the next buffer and store in member float[] buf.
protected void	init() Init and allocate.
void	setA(float a) Set allpass coeff.
void	setAllParameters() Set all filter parameters
void	setDryToWet(float d) Set dryToWet ratio
void	setG(float g, int k) Set one pole lowpass coefficient g; H(z) = 1/(1-g/z))
void	setL(float del, int k) Set comb delay.
void	setM(float del) Set allpass delay: H(z) = (z^_{m} + a)/(1 + a*z^{-m}) Make sure is not snaller than buffersize
void	setNChannels(int n)
void	setR(float r, int k) Set feedback of filter k

Methods inherited from class jass.engine.InOut

addSource, getBuffer, getSources, removeSource, resetTime

Methods inherited from class jass.engine.Out

clearBuffer, copyToOld, getBuffer, getBufferSize, getTime, peekAtBuffer, setBufferSize, setTime, setTimeAndNotify

Methods inherited from class java.lang.Object

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

Field Detail

nchannels

protected int nchannels

srate

protected float srate

nCombs

protected int nCombs

combDelays

protected float[] combDelays

allpassDelay

protected float allpassDelay

a

protected float a

R

protected float[] R

g

protected float[] g

dryToWet

protected float dryToWet

lpCombs

protected LowPassComb[] lpCombs

allPass

protected AllPass allPass

mixer

protected Mixer mixer

endMixer

protected Mixer endMixer

Constructor Detail

CombReverb

public CombReverb(int bufferSize)

Create. For derived classes.

Parameters:

bufferSize - Buffer size used for real-time rendering.

CombReverb

public CombReverb(int bufferSize,
                  int nchannels)

Create. For derived classes.

Parameters:

bufferSize - Buffer size used for real-time rendering.

nchannels - 1 for mono

CombReverb

public CombReverb(int bufferSize,
                  float srate,
                  int nCombs)

Create. For derived classes.

Parameters:

bufferSize - Buffer size used for real-time rendering.

srate - sampling rate in Hz

nCombs - number of comb filters

CombReverb

public CombReverb(int bufferSize,
                  float srate,
                  int nCombs,
                  int nchannels)

Create. For derived classes.

Parameters:

nchannels - 1 for mono

bufferSize - Buffer size used for real-time rendering.

srate - sampling rate in Hz

nCombs - number of comb filters

Method Detail

setNChannels

public void setNChannels(int n)

init

protected void init()

Init and allocate. Defaults are usable.

setAllParameters

public void setAllParameters()

Set all filter parameters

setR

public void setR(float r,
                 int k)

Set feedback of filter k

Parameters:

r - feedback

k - index of comb filter

setG

public void setG(float g,
                 int k)

Set one pole lowpass coefficient g; H(z) = 1/(1-g/z))

Parameters:

g - lowpass filter coefficient

k - index of comb filter

setDryToWet

public void setDryToWet(float d)

Set dryToWet ratio

Parameters:

d - dry to wet. 1 is dry only

setA

public void setA(float a)

Set allpass coeff. a: H(z) = (z^_{m} + a)/(1 + a*z^{-m})

Parameters:

a - allpass coeff

setM

public void setM(float del)

Set allpass delay: H(z) = (z^_{m} + a)/(1 + a*z^{-m}) Make sure is not snaller than buffersize

Parameters:

del - allpass delay in seconds

setL

public void setL(float del,
                 int k)

Set comb delay. Make sure is not snaller than buffersize

Parameters:

del - allpass delay in seconds

k - index of comb filter

addSource

public java.lang.Object addSource(Source s)
                           throws SinkIsFullException

Add source to Sink. Override to allow one input only and add to mixer with gain coefficient a and to delay 2. This will be called after init() so mixer will already have 2 inputs

Specified by:

addSource in interface Sink

Overrides:

addSource in class InOut

Parameters:

s - Source to add.

Returns:

object representing Source in Sink (may be null).

Throws:

SinkIsFullException

computeBuffer

protected void computeBuffer()

Compute the next buffer and store in member float[] buf.

Specified by:

computeBuffer in class Out