import type { ZilMateVoiceEvent } from './types.js';
export type CascadedVoiceSessionOptions = {
    sessionId?: string;
    audio: AsyncIterable<Buffer | Uint8Array>;
    onEvent?: (event: ZilMateVoiceEvent) => void;
    onAudio?: (chunk: Uint8Array) => void;
    onUserTranscript: (text: string) => Promise<string | void> | string | void;
    onUserSpeaking?: () => void;
};
export declare function speakWithDeepgram(text: string, options?: Pick<CascadedVoiceSessionOptions, 'onEvent' | 'onAudio'>): Promise<{
    audioBytes: number;
}>;
export declare function startCascadedVoiceSession(options: CascadedVoiceSessionOptions): Promise<{
    sessionId: string;
}>;
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