Duration of the voice note, in seconds; as defined by the sender.
MIME type of the file; as defined by the sender. Usually, one of "audio/ogg" for Opus in an OGG container, "audio/mpeg" for an MP3 audio, or "audio/mp4" for an M4A audio.
Result of speech recognition in the voice note; may be null.
File containing the voice note.
A waveform representation of the voice note in 5-bit format.
Describes a voice note.