pumpp.task.BeatTransformer¶
-
class
pumpp.task.
BeatTransformer
(name='beat', sr=22050, hop_length=512, p_self_beat=None, p_init_beat=None, p_state_beat=None, p_self_down=None, p_init_down=None, p_state_down=None)[source]¶ Task transformation for beat tracking
Attributes: - name : str
The name of this transformer
- sr : number > 0
The audio sampling rate
- hop_length : int > 0
The hop length for annotation frames
- p_self_beat : None, float in (0, 1), or np.ndarray [shape=(2,)]
Optional self-loop probability(ies), used for Viterbi decoding
- p_state_beat : None or float in (0, 1)
Optional marginal probability for beat state
- p_init_beat : None or float in (0, 1)
Optional initial probability for beat state
- p_self_down : None, float in (0, 1), or np.ndarray [shape=(2,)]
Optional self-loop probability(ies), used for Viterbi decoding
- p_state_down : None or float in (0, 1)
Optional marginal probability for downbeat state
- p_init_down : None or float in (0, 1)
Optional initial probability for downbeat state
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__init__
(name='beat', sr=22050, hop_length=512, p_self_beat=None, p_init_beat=None, p_state_beat=None, p_self_down=None, p_init_down=None, p_state_down=None)[source]¶ Initialize self. See help(type(self)) for accurate signature.
Methods
__init__
([name, sr, hop_length, …])Initialize self. decode_events
(encoded[, transition, …])Decode labeled events into (time, value) pairs decode_intervals
(encoded[, duration, multi, …])Decode labeled intervals into (start, end, value) triples empty
(duration)Create an empty jams.Annotation for this task. 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
(encoded[, downbeat, duration])Inverse transformation for beats and optional downbeats 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 set_transition_beat
(p_self)Set the beat-tracking transition matrix according to self-loop probabilities. set_transition_down
(p_self)Set the downbeat-tracking transition matrix according to self-loop probabilities. transform
(jam[, query])Transform jam object to make data for this task transform_annotation
(ann, duration)Apply the beat transformer