Package com.tagtraum.audiokern.audioprocessor

Class HighLevelFeaturePipelines

java.lang.Object

com.tagtraum.audiokern.audioprocessor.HighLevelFeaturePipelines

public final class HighLevelFeaturePipelines
extends Object

HighLevelFeaturePipelines.

Author:

Hendrik Schreiber

Method Summary

Modifier and Type	Method	Description
static SignalPipeline<AudioBuffer,Float>	createAverageNoveltyPipeline(String id, int windowSize, int hopsize, DistanceFunction<float[]> distanceFunction, int maxFramesToProcess)	Calculates the arithmetic mean of the buffer returned by a createNoveltyPipeline(String, int, int, com.tagtraum.jipes.math.DistanceFunction, int) pipeline.
static SignalPipeline<AudioBuffer,AudioBuffer>	createNoveltyPipeline(String id, int windowSize, int hopsize, DistanceFunction<float[]> distanceFunction, int maxFramesToProcess)	Transforms to mono, normalizes to -1/+1, applies the given window, applies a Hamming window, then transforms using FFT and
static SignalPipeline<AudioBuffer,Float>	createNoveltyStandardDeviationPipeline(String id, int windowSize, int hopsize, DistanceFunction<float[]> distanceFunction, int maxFramesToProcess)	Calculates the standard deviation of the buffer returned by a createNoveltyPipeline(String, int, int, com.tagtraum.jipes.math.DistanceFunction, int) pipeline.

Methods inherited from class java.lang.Object

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

Method Detail

createNoveltyPipeline

public static SignalPipeline<AudioBuffer,AudioBuffer> createNoveltyPipeline(String id,
                                                                                  int windowSize,
                                                                                  int hopsize,
                                                                                  DistanceFunction<float[]> distanceFunction,
                                                                                  int maxFramesToProcess)

Transforms to mono, normalizes to -1/+1, applies the given window, applies a Hamming window, then transforms using FFT and

Parameters:

id - id to collect any results under

windowSize - window size in frames, recommended is 4096 for audio sampled at 44.1kHz (~93ms) and a hopsize of 2048

hopsize - hop size, recommended is half the window size

maxFramesToProcess - maximum number of frames to process

distanceFunction - distance function to compute the distance between two FFT spectra

Returns:

a novelty pipeline

See Also:

DistanceFunctions.createCosineDistanceFunction(int, int), Novelty

createAverageNoveltyPipeline

public static SignalPipeline<AudioBuffer,Float> createAverageNoveltyPipeline(String id,
                                                                                   int windowSize,
                                                                                   int hopsize,
                                                                                   DistanceFunction<float[]> distanceFunction,
                                                                                   int maxFramesToProcess)

Calculates the arithmetic mean of the buffer returned by a createNoveltyPipeline(String, int, int, com.tagtraum.jipes.math.DistanceFunction, int) pipeline.

Parameters:

id - id

windowSize - window size

hopsize - hopsize

distanceFunction - distance function to compute the distance between two FFT spectra

maxFramesToProcess - max frames to process

Returns:

pipeline that computes average novelty

See Also:

Novelty

createNoveltyStandardDeviationPipeline

public static SignalPipeline<AudioBuffer,Float> createNoveltyStandardDeviationPipeline(String id,
                                                                                             int windowSize,
                                                                                             int hopsize,
                                                                                             DistanceFunction<float[]> distanceFunction,
                                                                                             int maxFramesToProcess)

Calculates the standard deviation of the buffer returned by a createNoveltyPipeline(String, int, int, com.tagtraum.jipes.math.DistanceFunction, int) pipeline.

Parameters:

id - id

windowSize - window size

hopsize - hopsize

distanceFunction - distance function to compute the distance between two FFT spectra

maxFramesToProcess - max frames to process

Returns:

pipeline that computes novelty standard deviation

See Also:

Novelty