Annotations

Data standards

wavesurfer-annotations Displays annotations as time regions on the waveform and, when frequency bounds are available, as boxes on the spectrogram. It accepts Audiovisual Core terms or plain annotation objects.

Making wavesurfer.js faster for long, heavily annotated recordings Covers performance changes to wavesurfer.js and the annotations plugin, including a layout optimization that skips boxes that have not moved (about 2.2–2.4 times faster).

These functions define a new object class Annotation and associated functions that can be used to store, manipulate, edit and save annotations.

Annotation class in sonicscrewdriver Defines the Annotation class.
annotation() in sonicscrewdriver Creates an Annotation object.
merge_annotations() in sonicscrewdriver Used to merge overlapping or adjacent Annotation objects.
sort_annotations() in sonicscrewdriver Used to sort a list of Annotation objects.
AnnotationList2DataFrame() in sonicscrewdriver Converts a list of Annotation objects to a data frame, with a column for each metadata field.

birdNetAnalyse() in sonicscrewdriver Outputs identifications as Annotation objects, or optionally as a data frame.
readAudacityLabels() in sonicscrewdriver Reads an Audacity label file, including any frequency limits, as Annotation objects.
audioblast() in sonicscrewdriver Fetches annotations from the audioBlast annomate module as Annotation objects, with output="Annotation".
wavCues() in sonicscrewdriver Reads the cue points and labelled regions that audio editors save in a wave file as Annotation objects.
flytunes_annotations() in NHMDE Outputs Annotation objects from Zooniverse exports of the FlyTunes project.

writeAudacityLabels() in sonicscrewdriver Writes a list of Annotation objects as a label file for the audio editor Audacity.
writeAnnotationWave() in sonicscrewdriver Saves the time region of each Annotation object as a wave file.

Hunting performance in R Investigates the performance of annotation related functionality in sonicscrewdriver.