com.jsyn.unitgen
Class PeriodAnalyzer

java.lang.Object
  com.jsyn.unitgen.UnitGenerator
      com.jsyn.unitgen.PeriodAnalyzer

public class PeriodAnalyzer
extends UnitGenerator

PitchDetector unit. UNDER_CONSTRUCTION - DO NOT USE Analyses an input signal and outputs an estimated period in frames. The frequency is frameRate/period. The confidence port tells you how accurate the estimate is. When the confidence is low, you should ignore the period. You can use a CompareUnit and a LatchUnit to hold values that you are confident of.

Note that a stable monophonic signal is required for accurate pitch tracking.

Tracking can be improved by passing the signal through a lowPass filter. This reduces the higher level harmonics which can confuse the detector.

Field Summary

UnitOutputPort	confidencePort
UnitInputPort	input
UnitOutputPort	periodPort

Fields inherited from class com.jsyn.unitgen.UnitGenerator

FALSE, TRUE

Constructor Summary

PeriodAnalyzer()

Method Summary

void	generate(int start, int limit) Perform essential synthesis function.
void	setSynthesisEngine(SynthesisEngine synthesisEngine)

Methods inherited from class com.jsyn.unitgen.UnitGenerator

addPort, convertHalfLifeToMultiplier, flattenOutputs, generate, getCircuit, getFramePeriod, getFrameRate, getPortByName, getPorts, getSynthesisEngine, isEnabled, pullData, setCircuit, setFrameRate, start, stop

Methods inherited from class java.lang.Object

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

Field Detail

input

public UnitInputPort input

periodPort

public UnitOutputPort periodPort

confidencePort

public UnitOutputPort confidencePort

Constructor Detail

PeriodAnalyzer

public PeriodAnalyzer()

Method Detail

setSynthesisEngine

public void setSynthesisEngine(SynthesisEngine synthesisEngine)

Overrides:

setSynthesisEngine in class UnitGenerator

Parameters:

synthesisEngine - the synthesisEngine to set

generate

public void generate(int start,
                     int limit)

Description copied from class: UnitGenerator

Perform essential synthesis function.

Specified by:

generate in class UnitGenerator

Parameters:

start - offset into port buffers

limit - limit offset into port buffers for loop