DSF< Tv, Ts > Class Template Reference

Discrete summation formula (DSF) oscillator. More...

#include <Oscillator.h>

Inheritance diagram for DSF< Tv, Ts >:

List of all members.

Public Member Functions
	DSF (Tv frq=440, Tv freqRatio=1, Tv ampRatio=0.5, Tv harmonics=8)
Tv	operator() ()
	Generate next sample.
void	ampRatio (Tv v)
	Set amplitude ratio of partials.
void	antialias ()
	Adjust harmonics so partials do not alias.
void	freq (Tv v)
	Set frequency of fundamental.
void	freqRatio (Tv v)
	Set frequency ratio of partials.
void	harmonics (Tv v)
	Set number of harmonics.
void	harmonicsMax ()
	Set number of harmonics to fill Nyquist range.
Tv	ampRatio ()
	Get amplitude ratio.
Tv	freqRatio ()
	Get frequency ratio.
Tv	harmonics ()
	Get current number of harmonics.
Tv	maxHarmonics ()
	Get maximum number of harmonics for current settings.
Tv	nextPhase ()
	Generate next sample. Stored phase is post-incremented.
Tv	nextPhase (Tv frqOffset)
	Generate next sample with a frequency offset.
Tv	freq ()
	Get frequency.
void	period (Tv v)
	Set period length.
Tv	period ()
	Get period.
void	phase (Tv v)
	Set phase from [0, 1) of one period.
Tv	phase ()
	Get normalized phase in [0, 1)
void	phaseAdd (Tv v)
	Add value to unit phase.

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Detailed Description

template<class Tv = gam::real, class Ts = Synced>
class gam::DSF< Tv, Ts >

Discrete summation formula (DSF) oscillator.

This produces a finite set of harmonics whose amplitudes follow a geometric series. The amplitude of harmonic i is ar^i where 'ar' is called the amplitude ratio. The frequency of harmonic i is (i * fr + 1) where 'fr' is called the frequency ratio. Harmonics run from i=0 (the fundamental) to the maximum specified harmonic.

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Constructor & Destructor Documentation

DSF	(	Tv	frq = 440,
		Tv	freqRatio = 1,
		Tv	ampRatio = 0.5,
		Tv	harmonics = 8
	)

Parameters:

[in]	frq	Frequency
[in]	freqRatio	Frequency ratio of partials
[in]	ampRatio	Amplitude ratio of partials
[in]	harmonics	Number of harmonics

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

• /Users/ljp/code/gamma/trunk/Gamma/Oscillator.h