------
2019-07-07
Note: the 0.7 series will be the last to officially support Python 2.7.
New features
- `772`_ `librosa.stream`: Stream generator to process long audio files into smaller pieces. *Brian McFee*
- `845`_ `librosa.load`: Replaced the default audio decoder with `pysoundfile`, and only use `audioread` as backup. *Brian McFee*
- `843`_ `librosa.griffinlim`: Phase retrieval from magnitude spectrograms using the (accelerated) Griffin-Lim method. *Brian McFee*
- `843`_ `librosa.feature.inverse`: New module for feature inversion, based on the Griffin-Lim phase retrieval algorithm. Includes `mel_to_audio` and `mfcc_to_audio`. *Brian McFee*
- `725`_ `librosa.lpc`: Linear prediction coefficients (LPC). *Adam Weiss*
- `907`_ `librosa.sequence.rqa`: Recurrence Quantification Analysis (RQA) for sequence alignment. *Brian McFee*
- `739`_ `librosa.beat.plp`: Predominant local pulse (PLP) for variable-tempo beat tracking. *Brian McFee*
- `894`_ `librosa.feature.fourier_tempogram`: Fourier Tempogram for representing rhythm in the frequency domain. *Brian McFee*
- `891`_ `librosa.pcen` Per-channel energy normalization (PCEN) now allows logarithmic range compression at the limit power->0. *Vincent Lostanlen*
- `863`_ `librosa.effects.pitch_shift` supports custom resampling modes. *Taewoon Kim*
- `857`_ `librosa.cqt` and `librosa.icqt` Forward and inverse constant-Q transform now support custom resampling modes. *Brian McFee*
- `842`_ `librosa.segment.path_enhance`: Near-diagonal path enhancement for recurrence, self- or cross-similarity matrices. *Brian McFee*
- `840`_ `librosa.segment.recurrence_matrix` now supports a keyword argument, `self=False`. If set to `True`, the recurrence matrix includes self-loops. *Brian McFee*
- `776`_ `librosa.piptrack` now supports a keyword argument, `ref=None`, allowing users to override the reference thresholding behavior for determining which bins correspond to pitches. *Brian McFee*
- `770`_ `librosa.segment.cross_similarity`: Cross-similarity function for comparing two feature sequences. *Rachel Bittner, Brian McFee*
- `709`_ `librosa.onset.onset_strength_multi` now supports a user-specified reference spectrum via the `ref` keyword argument. *Brian McFee*
- `576`_ `librosa.resample` now supports `mode='polyphase'`. *Brian McFee*
- `519`_ `librosa.onset.onset_strength_multi`: Setting `aggregate=False` disables the aggregation of onset strengths across frequency bins. *Brian McFee*
Bug fixes
- `900`_ `librosa.effects.pitch_shift` now preserves length. *Vincent Lostanlen*
- `891`_ `librosa.pcen` Dynamic range compression in PCEN is more numerically stable for small values of the exponent. *Vincent Lostanlen*
- `888`_ `librosa.ifgram` Instantaneous frequency spectrogram now correctly estimates center frequencies when using windows other than `hann`. *Brian McFee*
- `869`_ `librosa.sequence.dtw` Fixed a bug in dynamic time warping when `subseq=True`. *Viktor Andreevitch Morozov*
- `851`_ `librosa.pcen` now initializes its autoregressive filtering in the steady state, not with silence. *Jan Schlüter, Brian McFee*
- `833`_ `librosa.segment.recurrence_matrix`: `width` parameter now cannot exceed data length. *Brian McFee*
- `825`_ Filter bank constructors `mel`, `chroma`, `constant_q`, and `cq_to_chroma` are now type-stable. *Vincent Lostanlen, Brian McFee*
- `802`_ `librosa.icqt` Inverse constant-Q transform has been completely rewritten and is more numerically stable. *Brian McFee*