Use case categories that the audio recognition request can be
described by.
Values:
INTERACTION_TYPE_UNSPECIFIED (0):
Use case is either unknown or is something
other than one of the other values below.
DISCUSSION (1):
Multiple people in a conversation or discussion. For example
in a meeting with two or more people actively participating.
Typically all the primary people speaking would be in the
same room (if not, see PHONE_CALL)
PRESENTATION (2):
One or more persons lecturing or presenting
to others, mostly uninterrupted.
PHONE_CALL (3):
A phone-call or video-conference in which two
or more people, who are not in the same room,
are actively participating.
VOICEMAIL (4):
A recorded message intended for another
person to listen to.
PROFESSIONALLY_PRODUCED (5):
Professionally produced audio (eg. TV Show,
Podcast).
VOICE_SEARCH (6):
Transcribe spoken questions and queries into
text.
VOICE_COMMAND (7):
Transcribe voice commands, such as for
controlling a device.
DICTATION (8):
Transcribe speech to text to create a written
document, such as a text-message, email or
report.
