SequenceTier

sequences.tiers.SequenceTier(self, tier=SequenceList(), entry_class=None)

A sequence tier

Given a praatio IntervalTier or list of Intervals, creates entry_class instances for every interval.

In addition to the attributes and methods described below, the attributes and methods from TierMixins and WithinMixins are also available.

Parameters

Name	Type	Description	Default
tier	list[Interval] | list[SequenceInterval] | IntervalTier | Self	A list of interval entries. Defaults to SequenceList().	SequenceList()
entry_class	Type[SequenceInterval]	The sequence class for this tier. Defaults to SequenceInterval.	None

Examples

from aligned_textgrid import SequenceInterval, Word, SequenceTier

the = Word((0,1, "the"))
dog = Word((0,1,"dog"))

word_tier = SequenceTier([the, dog])

print(word_tier)

Sequence tier of Word; .superset_class: Top_wp; .subset_class: Phone

print(word_tier.sequence_list)

[Class Word, label: the, .superset_class: Top_wp, .super_instance, None, .subset_class: Phone, Class Word, label: dog, .superset_class: Top_wp, .super_instance, None, .subset_class: Phone]

Attributes

Name	Type	Description
sequence_list	SequenceList[SequenceInterval]	A SequenceList of intervals in the tier.
entry_class	Type[SequenceInterval]	The entry class of the tier
superset_class	Type[SequenceInterval]	The superset class of the tier
subset_class	Type[SequenceInterval]	The subset class of the tier
starts	np.ndarray[np.float64]	An array of start times for all intervals
ends	np.ndarray[np.float64]	An array of end times for all intervals
labels	list[str]	A list of the labels of all intervals
xmin	float	The minimum start time of the tier
xmax	float	The minumum end time of the tier
name	str	The name of the tier
[]		Indexable. Returns a SequenceInterval
		Iterable

Methods

Name	Description
cleanup	Insert empty intervals where there are gaps in the existing tier.
get_interval_at_time	Gets interval index at specified time
pop	Pop an interval
return_tier	Returns a praatio interval tier
save_as_tg	Saves as a textgrid

cleanup

sequences.tiers.SequenceTier.cleanup()

Insert empty intervals where there are gaps in the existing tier.

get_interval_at_time

sequences.tiers.SequenceTier.get_interval_at_time(time)

Gets interval index at specified time

Parameters

Name	Type	Description	Default
time	float	time at which to get an interval	required

Returns

Type	Description
int	Index of the interval

pop

sequences.tiers.SequenceTier.pop(entry)

Pop an interval

Parameters

Name	Type	Description	Default
entry	SequenceInterval	Interval to pop	required

return_tier

sequences.tiers.SequenceTier.return_tier(name=None)

Returns a praatio interval tier

Returns

Type	Description
praatio.data_classes.interval_tier.IntervalTier	A praatio interval tier. Useful for saving results back as a Praat TextGrid.

save_as_tg

sequences.tiers.SequenceTier.save_as_tg(save_path)

Saves as a textgrid

Uses praatio.data_classes.textgrid.Textgrid.save() method.

Parameters

Name	Type	Description	Default
save_path	str	Output path	required