Mic frequency spectrum as REALTIME_AUDIO_BIN_COUNT normalized bins, or null.
RMS level (0..1) of the USER's microphone, or null when un-metered.
Agent-output frequency spectrum as REALTIME_AUDIO_BIN_COUNT normalized bins, or null.
RMS level (0..1) of the AGENT's audio output, or null when un-metered.
A point-in-time snapshot of the session's audible activity, sampled by the host (typically per animation frame) via BaseRealtimeClient.GetAudioActivity to drive audio-reactive call visuals — the orb that vibrates with the agent's voice and the true-spectrum EQ.
CAPABILITY-SHAPED, like usage telemetry: every member is
nullwhen that direction has no meter. Hosts must degrade gracefully — levels-without-bins renders envelope breathing, fullnullfalls back to turn-state-driven animation.