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Essentia 2.1 beta4

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@dbogdanov dbogdanov released this 23 May 12:56
· 2133 commits to master since this release
v2.1_beta4
8f9cb24

This pre-release includes the following changes:

  • Improved algorithms

    • AudioLoader now supports audio sources with multiple audio streams (new parameter 'audioStream')
    • PoolAggregator now outputs stdev in addition to var (#342)
    • SpectralContrast: Improve precision for computation of subband bin intervals
    • Danceability now also outputs a DFA exponent vector
    • HPCP can now optionally apply unit sum normalization (#348)
    • HPCP: 'splitFrequency' parameter is now called 'bandSplitFrequency'
    • LoudnessEBUR128: Warn on empty input in the streaming mode

  • Updates to Mel and ERB energy band algorithms

    • Add support for extracting MelBands and MFCCs 'the htk way'
    • Add support for DCT type III in DCT algorithm
      • New parameter 'dctType' in DCT, MFCC and GFCC
      • New 'liftering' parameter in DCT and MFCC
    • New parameters 'normalize', 'type', 'scale' and 'weighting' in MelBands and MFCC
    • New 'type' parameter in GFCC
    • New 'logType' parameter in MFCC, GFCC
    • New 'log' parameter in TriangularBands and MelBands
    • ERBBands: 'type' parameter value "energy" is now called "power"
    • TriangularBands is now faster

  • New algorithms

    • SpectrumToCent for computing cent scale from frequency bins
    • New algorithm IDCT for inverse DCT
    • New algorithm SpectrumCQ

  • Bug-fixes in algorithms:

    • MelBands and TriangularBands: Add checks for insufficient spectrum resolution (#142)
    • Fix PitchYin out of range error (#376)
    • Fix Inf values in OddToEvenHarmonicEnergyRatio
    • Fix reset() in LowLevelSpectralExtractor and LowLevelSpectralEqloudExtractor
    • Fix occasional exception in BeatsLoudness (#199)
    • Danceability: Fix NaN danceability value occurring on very short input signals
    • Fix memory leak in MelBands
    • Fix memory bug in Vibrato
    • SpectralContrast: Force non-zero 'lowFrequencyBound' parameter to avoid division by zero (#568)
    • AudioLoader: Fix memory bug on exceptions while opening an audio file in AudioLoader

  • Updates to Python wrapper:

    • FrameGenerator now inherits the default parameters from FrameCutter
    • FrameGenerator now has a new method frame_times() to compute frame positions in time
    • Fix array memory corruption when passing NumPy array views to Essentia algorithms (#240)
    • Fix memory deallocation for streaming algorithms to avoid a memory leak

  • Extractors:

    • Freesound extractor now stores all results in json

  • Logging:

    • Remove colors in log messages when piped to file; do not print colors on Windows

  • Build scripts updates:

    • Update waf to 1.9.5
    • Update script for computing algorithm dependencies

  • Code cleanup and unit tests updates

  • Re-designed and expanded documentation:

    • Updated installation instructions
    • Reorganized and improved Python tutorials. Notebook tutorials are now also rendered as html
    • Updated algorithm descriptions
    • Added examples of industrial applications and academic studies using Essentia
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