AudioFile

class osekit.core_api.audio_file.AudioFile(path: PathLike | str, begin: Timestamp | None = None, strptime_format: str | list[str] | None = None, timezone: str | pytz.timezone | None = None)

Audio file associated with timestamps.

Initialize an AudioFile object with a path and a begin timestamp.

The begin timestamp can either be provided as a parameter

or parsed from the filename according to the provided strptime_format.

Parameters

path: PathLike | str

Full path to the file.

begin: pandas.Timestamp | None

Timestamp corresponding to the first data point in the file. If it is not provided, strptime_format is mandatory. If both begin and strptime_format are provided, begin will overrule the timestamp embedded in the filename.

strptime_format: str | None

The strptime format used in the text. It should use valid strftime codes (https://strftime.org/). Example: '%y%m%d_%H:%M:%S'.

timezone: str | pytz.timezone | None

The timezone in which the file should be localized. If None, the file begin/end will be tz-naive. If different from a timezone parsed from the filename, the timestamps’ timezone will be converted from the parsed timezone to the specified timezone.

frames_indexes(start: Timestamp, stop: Timestamp) → tuple[int, int]

Return the indexes of the frames between the start and stop timestamps.

The start index is that of the first sample that ends after the start timestamp. The stop index is that of the last sample that starts before the stop timestamp.

Parameters

start: pandas.Timestamp

Timestamp corresponding to the first data point to read.

stop: pandas.Timestamp

Timestamp after the last data point to read.

Returns

tuple[int,int]

First and last frames of the data.

move(folder: Path) → None

Move the file to the target folder.

Parameters

folder: Path

destination folder where the file will be moved.

read(start: Timestamp, stop: Timestamp) → np.ndarray

Return the audio data between start and stop from the file.

Parameters

start: pandas.Timestamp

Timestamp corresponding to the first data point to read.

stop: pandas.Timestamp

Timestamp after the last data point to read.

Returns

numpy.ndarray:

The audio data between start and stop. The first frame of the data is the first frame that ends after start. The last frame of the data is the last frame that starts before stop.