pumpp.task.ChordTransformer¶
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class
pumpp.task.
ChordTransformer
(name='chord', sr=22050, hop_length=512, sparse=False)[source]¶ Chord annotation transformers.
This transformer uses a (pitch, root, bass) decomposition of chord annotations.
See also
Attributes
name (str) The name of the chord transformer sr (number > 0) The sampling rate of audio hop_length (int > 0) The number of samples between each annotation frame sparse (bool) If True, root and bass values are sparsely encoded as integers in [0, 12]. If False, root and bass values are densely encoded as 13-dimensional booleans. -
__init__
(name='chord', sr=22050, hop_length=512, sparse=False)[source]¶ Initialize a chord task transformer
Methods
__init__
([name, sr, hop_length, sparse])Initialize a chord task transformer decode_events
(encoded)Decode labeled events into (time, value) pairs decode_intervals
(encoded[, duration, multi, ...])Decode labeled intervals into (start, end, value) triples empty
(duration)Empty chord annotations encode_events
(duration, events, values[, dtype])Encode labeled events as a time-series matrix. encode_intervals
(duration, intervals, values)Encode labeled intervals as a time-series matrix. inverse
(pitch, root, bass[, duration])merge
(data)Merge an array of output dictionaries into a single dictionary with properly scoped names. pop
(field)register
(field, shape, dtype)Register a field as a tensor with specified shape and type. scope
(key)Apply the name scope to a key transform
(jam[, query])Transform jam object to make data for this task transform_annotation
(ann, duration)Apply the chord transformation. -