Voice note caption; may be null if empty; pass null to use an empty caption; 0-getOption("message_caption_length_max") characters.
Duration of the voice note, in seconds.
Voice note self-destruct type; may be null if none; pass null if none; private chats only.
Voice note to be sent. The voice note must be encoded with the Opus codec and stored inside an OGG container with a single audio channel, or be in MP3 or M4A format as regular audio.
Waveform representation of the voice note in 5-bit format.
A voice note message. Subtype of InputMessageContent.