Package com.tagtraum.audiokern.audioprocessor

Class HarteConcertPitch

java.lang.Object

com.tagtraum.audiokern.audioprocessor.HarteConcertPitch

All Implemented Interfaces:

SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

public class HarteConcertPitch
extends Object
implements SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

Adjusts spectra so that they are in "concert pitch", i.e. A4 is at 440Hz. This implementation is similar to the concept proposed by Chris Harte in Towards automatic extraction of harmony information from music signals. PhD Thesis, Queen Mary University of London (2010).

See Also:

Concert pitch on Wikipedia

Constructor Summary

Constructors

Constructor	Description
HarteConcertPitch()
HarteConcertPitch(Object id, int lowerBoundaryMidi, int upperBoundaryMidi, int binsPerSemitone)

Method Summary

Modifier and Type	Method	Description
<O2> SignalProcessor<MultiBandSpectrum,O2>	connectTo(SignalProcessor<MultiBandSpectrum,O2> processor)
<O2> SignalProcessor<MultiBandSpectrum,O2>	disconnectFrom(SignalProcessor<MultiBandSpectrum,O2> processor)
boolean	equals(Object o)
void	flush()
Byte	getCentDeviation()	Deviation of source spectra from concert pitch in cents.
SignalProcessor<MultiBandSpectrum,?>[]	getConnectedProcessors()
Object	getId()
MultiBandSpectrum	getOutput()
int	hashCode()
void	process(LinearFrequencySpectrum spectrum)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

HarteConcertPitch

public HarteConcertPitch(Object id,
                         int lowerBoundaryMidi,
                         int upperBoundaryMidi,
                         int binsPerSemitone)

HarteConcertPitch

public HarteConcertPitch()

Method Detail

connectTo

public <O2> SignalProcessor<MultiBandSpectrum,O2> connectTo(SignalProcessor<MultiBandSpectrum,O2> processor)

Specified by:

connectTo in interface SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

process

public void process(LinearFrequencySpectrum spectrum)
             throws IOException

Specified by:

process in interface SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

Throws:

IOException

getCentDeviation

public Byte getCentDeviation()

Deviation of source spectra from concert pitch in cents. May return null, if we are not very confident in the tuning we calculated.

Returns:

deviation, maybe null

getOutput

public MultiBandSpectrum getOutput()
                            throws IOException

Specified by:

getOutput in interface SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

Throws:

IOException

getId

public Object getId()

Specified by:

getId in interface SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

disconnectFrom

public <O2> SignalProcessor<MultiBandSpectrum,O2> disconnectFrom(SignalProcessor<MultiBandSpectrum,O2> processor)

Specified by:

disconnectFrom in interface SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

getConnectedProcessors

public SignalProcessor<MultiBandSpectrum,?>[] getConnectedProcessors()

Specified by:

getConnectedProcessors in interface SignalProcessor<LinearFrequencySpectrum,MultiBandSpectrum>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object