GFCC

streaming mode | Spectral category

Inputs

  • spectrum (vector_real) - the audio spectrum

Outputs

  • bands (vector_real) - the energies in ERB bands
  • gfcc (vector_real) - the gammatone feature cepstrum coefficients

Parameters

  • dctType (integer ∈ [2, 3], default = 2) :
    the DCT type
  • highFrequencyBound (real ∈ (0, ∞), default = 22050) :
    the upper bound of the frequency range [Hz]
  • inputSize (integer ∈ (1, ∞), default = 1025) :
    the size of input spectrum
  • logType (string ∈ {natural, dbpow, dbamp, log}, default = dbamp) :
    logarithmic compression type. Use 'dbpow' if working with power and 'dbamp' if working with magnitudes
  • lowFrequencyBound (real ∈ [0, ∞), default = 40) :
    the lower bound of the frequency range [Hz]
  • numberBands (integer ∈ [1, ∞), default = 40) :
    the number of bands in the filter
  • numberCoefficients (integer ∈ [1, ∞), default = 13) :
    the number of output cepstrum coefficients
  • sampleRate (real ∈ (0, ∞), default = 44100) :
    the sampling rate of the audio signal [Hz]
  • silenceThreshold (real ∈ (0, ∞), default = 1e-10) :
    silence threshold for computing log-energy bands
  • type (string ∈ {magnitude, power}, default = power) :
    use magnitude or power spectrum

Description

This algorithm computes the Gammatone-frequency cepstral coefficients of a spectrum. This is an equivalent of MFCCs, but using a gammatone filterbank (ERBBands) scaled on an Equivalent Rectangular Bandwidth (ERB) scale.

References:
[1] Y. Shao, Z. Jin, D. Wang, and S. Srinivasan, "An auditory-based feature for robust speech recognition," in IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP’09), 2009, pp. 4625-4628.

See also

ERBBands (standard) ERBBands (streaming) GFCC (standard) MFCC (standard) MFCC (streaming)

Streaming algorithms

AfterMaxToBeforeMaxEnergyRatio | AllPass | AudioLoader | AudioOnsetsMarker | AudioWriter | AutoCorrelation | BFCC | BPF | BandPass | BandReject | BarkBands | BarkExtractor | BeatTrackerDegara | BeatTrackerMultiFeature | Beatogram | BeatsLoudness | BinaryOperator | BinaryOperatorStream | BpmHistogram | BpmHistogramDescriptors | BpmRubato | CartesianToPolar | CentralMoments | Centroid | ChordsDescriptors | ChordsDetection | ChromaCrossSimilarity | Chromagram | Chromaprinter | ClickDetector | Clipper | ConstantQ | CoverSongSimilarity | Crest | CrossCorrelation | CubicSpline | DCRemoval | DCT | Danceability | Decrease | Derivative | DerivativeSFX | DiscontinuityDetector | Dissonance | DistributionShape | Duration | DynamicComplexity | ERBBands | EasyLoader | EffectiveDuration | Energy | EnergyBand | EnergyBandRatio | Entropy | Envelope | EqloudLoader | EqualLoudness | FFT | FFTC | FadeDetection | FalseStereoDetector | FileOutput | Flatness | FlatnessDB | FlatnessSFX | Flux | FrameCutter | FrameToReal | FrequencyBands | GFCC | GapsDetector | GeometricMean | HFC | HPCP | HarmonicBpm | HarmonicMask | HarmonicModelAnal | HarmonicPeaks | HighPass | HighResolutionFeatures | Histogram | HprModelAnal | HpsModelAnal | HumDetector | IDCT | IFFT | IFFTC | IIR | Inharmonicity | InstantPower | Key | KeyExtractor | LPC | Larm | Leq | LevelExtractor | LogAttackTime | LogSpectrum | LoopBpmConfidence | LoopBpmEstimator | Loudness | LoudnessEBUR128 | LoudnessEBUR128Filter | LoudnessVickers | LowLevelSpectralEqloudExtractor | LowLevelSpectralExtractor | LowPass | MFCC | Magnitude | MaxFilter | MaxMagFreq | MaxToTotal | Mean | Median | MedianFilter | MelBands | MetadataReader | Meter | MinMax | MinToTotal | MonoLoader | MonoMixer | MonoWriter | MovingAverage | MultiPitchMelodia | Multiplexer | NNLSChroma | NSGConstantQ | NSGConstantQStreaming | NSGIConstantQ | NoiseAdder | NoiseBurstDetector | NoveltyCurve | OddToEvenHarmonicEnergyRatio | OnsetDetection | OnsetDetectionGlobal | OnsetRate | Onsets | OverlapAdd | Panning | PeakDetection | PercivalBpmEstimator | PercivalEnhanceHarmonics | PercivalEvaluatePulseTrains | PitchCREPE | PitchContours | PitchContoursMelody | PitchContoursMonoMelody | PitchContoursMultiMelody | PitchFilter | PitchMelodia | PitchSalience | PitchSalienceFunction | PitchSalienceFunctionPeaks | PitchYin | PitchYinFFT | PitchYinProbabilistic | PitchYinProbabilities | PitchYinProbabilitiesHMM | PolarToCartesian | PoolAggregator | PoolToTensor | PowerMean | PowerSpectrum | PredominantPitchMelodia | RMS | RawMoments | RealAccumulator | ReplayGain | Resample | ResampleFFT | RhythmDescriptors | RhythmExtractor | RhythmExtractor2013 | RhythmTransform | RollOff | SBic | SNR | SaturationDetector | Scale | SilenceRate | SineModelAnal | SineModelSynth | SineSubtraction | SingleBeatLoudness | SingleGaussian | Slicer | SpectralCentroidTime | SpectralComplexity | SpectralContrast | SpectralPeaks | SpectralWhitening | Spectrum | SpectrumCQ | SpectrumToCent | Spline | SprModelAnal | SprModelSynth | SpsModelAnal | SpsModelSynth | StartStopCut | StartStopSilence | StereoDemuxer | StereoMuxer | StereoTrimmer | StochasticModelAnal | StochasticModelSynth | StrongDecay | StrongPeak | SuperFluxExtractor | SuperFluxNovelty | SuperFluxPeaks | TCToTotal | TempoCNN | TempoScaleBands | TempoTap | TempoTapDegara | TempoTapMaxAgreement | TempoTapTicks | TensorNormalize | TensorToPool | TensorToVectorReal | TensorTranspose | TensorflowInputFSDSINet | TensorflowInputMusiCNN | TensorflowInputTempoCNN | TensorflowInputVGGish | TensorflowPredict | TensorflowPredict2D | TensorflowPredictCREPE | TensorflowPredictEffnetDiscogs | TensorflowPredictFSDSINet | TensorflowPredictMAEST | TensorflowPredictMusiCNN | TensorflowPredictTempoCNN | TensorflowPredictVGGish | TonalExtractor | TriangularBands | TriangularBarkBands | Trimmer | Tristimulus | TruePeakDetector | TuningFrequency | TuningFrequencyExtractor | UnaryOperator | UnaryOperatorStream | Variance | VectorInput | VectorRealAccumulator | VectorRealToTensor | Vibrato | Viterbi | WarpedAutoCorrelation | Welch | Windowing | ZeroCrossingRate