/**
 * VAD events are sent when vad_signals=true. Fields may vary by event type.
 */
export interface EventsData {
    /** Type of event */
    event_type?: string | undefined;
    /** Event timestamp */
    timestamp?: string | undefined;
    /** VAD signal type */
    signal_type?: EventsData.SignalType | undefined;
    /** Epoch timestamp when the event occurred */
    occured_at?: number | undefined;
}
export declare namespace EventsData {
    /** VAD signal type */
    const SignalType: {
        readonly StartSpeech: "START_SPEECH";
        readonly EndSpeech: "END_SPEECH";
    };
    type SignalType = (typeof SignalType)[keyof typeof SignalType];
}