csl::PinkNoise Class Reference

#include <Noise.h>

Inheritance diagram for csl::PinkNoise:

List of all members.

Public Member Functions
	PinkNoise ()
	Constructors.
	PinkNoise (double ampl, double offset=0.f)
	PinkNoise (int seed, double ampl=1.f, double offset=0.f)
	~PinkNoise ()
void	nextBuffer (Buffer &outputBuffer, unsigned outBufNum) throw (CException)
	Destructor.
sample	nextPink ()
	returns the next pink noise sample
Protected Member Functions
void	initialize (int numRows)
	set up PinkNoise for N rows of generators
Protected Attributes
int	mPinkRows [PINK_MAX_RANDOM_ROWS]
	Pink noise generator rows.
int	mPinkRunningSum
	Used to optimize summing of generators.
int	mPinkIndex
	Incremented each sample.
int	mPinkIndexMask
	Index wrapped by ANDing with this mask.
float	mPinkScalar
	Used to scale within range of -1.0 to +1.0.

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Detailed Description

Pink noise -- equal power per octave

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Constructor & Destructor Documentation

PinkNoise::PinkNoise

(

)

Constructors.

Most of this code was taken from an public domain C implementation written by Phil Burk. The code and the webpage explaining it is at http://www.firstpr.com.au/dsp/pink-noise/phil_burk_19990905mPatestmPink.c and http://www.firstpr.com.au/dsp/pink-noise/

References initialize(), csl::kExpand, and csl::UnitGenerator::setCopyPolicy().

PinkNoise::PinkNoise	(	double	ampl,
		double	offset = 0.f
	)

References initialize(), csl::kExpand, and csl::UnitGenerator::setCopyPolicy().

PinkNoise::PinkNoise	(	int	seed,
		double	ampl = 1.f,
		double	offset = 0.f
	)

References initialize(), csl::kExpand, and csl::UnitGenerator::setCopyPolicy().

csl::PinkNoise::~PinkNoise

(

)

[inline]

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Member Function Documentation

void PinkNoise::nextBuffer	(	Buffer &	outputBuffer,
		unsigned	outBufNum
	)			throw (CException) [virtual]

Destructor.

the monoNextBuffer method is where the DSP takes place

Reimplemented from csl::UnitGenerator.

References DECLARE_SCALABLE_CONTROLS, LOAD_SCALABLE_CONTROLS, csl::logMsg(), and UPDATE_SCALABLE_CONTROLS.

sample PinkNoise::nextPink

(

)

returns the next pink noise sample

References csl::Noise::generateRandomNumber(), mPinkIndex, mPinkIndexMask, mPinkRows, mPinkRunningSum, mPinkScalar, and PINK_RANDOM_SHIFT.

void PinkNoise::initialize

(

int

numRows

)

[protected]

set up PinkNoise for N rows of generators

Setup PinkNoise structure for N rows of generators.

References mPinkIndex, mPinkIndexMask, mPinkRows, mPinkRunningSum, mPinkScalar, and PINK_RANDOM_BITS.

Referenced by PinkNoise().

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Member Data Documentation

int csl::PinkNoise::mPinkRows[PINK_MAX_RANDOM_ROWS] [protected]

Pink noise generator rows.

Referenced by initialize(), and nextPink().

int csl::PinkNoise::mPinkRunningSum [protected]

Used to optimize summing of generators.

Referenced by initialize(), and nextPink().

int csl::PinkNoise::mPinkIndex [protected]

Incremented each sample.

Referenced by initialize(), and nextPink().

int csl::PinkNoise::mPinkIndexMask [protected]

Index wrapped by ANDing with this mask.

Referenced by initialize(), and nextPink().

float csl::PinkNoise::mPinkScalar [protected]

Used to scale within range of -1.0 to +1.0.

Referenced by initialize(), and nextPink().

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The documentation for this class was generated from the following files:

• CSL/Sources/Noise.h
• CSL/Sources/Noise.cpp