/** Retires audible output on spoken interruption without changing Pi turn routing. */
export declare class RealtimePlayback {
    private inputActive;
    private inputGeneration;
    private assistantGeneration;
    private speakerActiveUntil;
    private suppressed;
    private readonly setSuppressed;
    constructor(setSuppressed: (suppressed: boolean) => void);
    audioActivity(): void;
    inputStarted(speechPending: boolean): void;
    inputFinished(speechPending: boolean, hasTranscript: boolean): void;
    outputAdded(): void;
    outputFinished(): void;
    private releaseCurrentOutput;
    private suppress;
}