Package com.tagtraum.jipes.audio

Audio-specific types and processors.

See: Description

Interface Summary

Interface	Description
AudioBuffer	Read-only buffer that holds (audio) data and some meta information in the form of an AudioFormat instance.
AudioMatrix	Read-only matrix that holds (audio) data and some meta information in the form of an AudioFormat instance.
AudioSpectrum	Read-only representation of an (audio) spectrum.
Novelty.Kernel	Kernel.

Class Summary

Class	Description
AbstractAudioSpectrum	Skeleton implementation of an AudioSpectrum.
AudioBufferFunctions	Factory methods for turning float[] functions into AudioBuffer functions.
AudioSignalSource	Encapsulates an AudioInputStream to serve as a SignalSource for a SignalPump or a SignalPullProcessor.
BandSplit<T extends AudioSpectrum>	Takes the real values of a sequence of input spectra and creates new buffers for each frequency bin.
Channel	Only lets one specified channel through.
ComplexAudioBuffer	Buffer that holds complex, time domain audio data and some meta information in the form of an AudioFormat instance.
ConstantQTransform	Processes input using a transform created by ConstantQTransformFactory.
DCT	Transforms samples obtained with AudioBuffer.getData() using the DCT.
Decimate	Applies an appropriate low pass filter before dropping samples.
Downsample	Drops samples in order to downsample the data.
FFT	Transforms samples obtained with AudioBuffer.getData() using the FFT.
FrameNumberFilter	Allows to ignore AudioBuffers, if their first frame number as returned by AudioBuffer.getFrameNumber() does not fall into a specified range.
IFFT	Transforms samples obtained from a given LinearFrequencySpectrum using the inverse FFT.
InstantaneousFrequency	Combines subsequent LinearFrequencySpectrums into a InstantaneousFrequencySpectrum, potentially providing better frequency resolution.
InstantaneousFrequencySpectrum	Represents a spectrum with instantaneous frequencies based on two subsequent LinearFrequencySpectrums.
InterleavedChannelJoin	Joins multichannel audio data in an interleaved format (LRLRLR...).
InterleavedChannelSplit	Splits AudioBuffers containing interleaved signals (for example LRLRLR) for multiple channels into separate buffers containing the signal for one channel each.
Interpolate	Adds zero samples followed by an appropriate low pass filter.
LinearFrequencySpectrum	Represents a spectrum with linear frequencies (as opposed to a LogFrequencySpectrum) as generated by a suitable SignalProcessor.
LogFrequencySpectrum	Log frequency spectrum - possibly created by ConstantQTransform.
Mel<T extends LinearFrequencySpectrum>	Assumes that the input is linear spectral data produced by some Transform and sums up the powers into bins, which are spaced according to the provided frequency boundaries.
MelSpectrum	Mel spectrum typically constructed from a LinearFrequencySpectrum created by FFT.
Mono	Averages the provided signal's interleaved channels into one (mono) channel.
MultiBand<T extends AudioSpectrum>	Assumes that the input is spectral data produced by some Transform and sums up the powers into bins, which are spaced according to the provided frequency boundaries.
MultiBandSpectrum	Represents an audio spectrum divided into bands as produced for example by MultiBandSpectrum.createLogarithmicBands(float, float, int) or MultiBandSpectrum.createMidiBands(int, int).
Novelty<I extends AudioBuffer>	Processes AudioBuffer features to create a novelty curve using a kernel and a distance function.
Novelty.GaussianCheckerboardKernel	Gaussian checkboard kernel.
Novelty.NormGaussianCheckerboardKernel	Normalized Gaussian checkerboard kernel. Aggregate values are divided by the maximal possible value a Novelty.GaussianCheckerboardKernel would deliver before they are returned, assuming the input values are between -1 and 1.
OLA	Overlap-Add combines multiple overlapping windows into non-overlapping ones by adding the overlapping parts.
OnsetStrength	Processes AudioSpectrum to compute an onset strength signal in the form of an AudioBuffer produced on OnsetStrength.flush(). This particular onset strength is defined as the bandwise difference log(power(k,t)+1)-log(power(k,t-1)+1) for the band k and the spectrum t.
RealAudioBuffer	Buffer that holds real, time domain audio data and some meta information in the form of an AudioFormat instance.
RealAudioMatrix	AudioMatrix representing exclusively real values.
Resample	Resamples mono audio data.
SelfSimilarity<I extends AudioBuffer>	Self similarity processor computes a self-similarity matrix from AudioBuffer features.
SlidingWindow	Provides overlapping frame blocks (aka slices or windows or frames) of a defined size.
TimestampLimitedSignalSource<T extends AudioBuffer>	Timestamp limited SignalSource.
Upsample	Adds zero samples (zero stuffing) in order to upsample the data.
Zeropad<T extends AudioBuffer>	Zeropads AudioBuffers at a given Zeropad.Position, so that a desired total size is reached.

Enum Summary

Enum	Description
Zeropad.Position

Package com.tagtraum.jipes.audio Description

Audio-specific types and processors.

Since:

0.9