import { RealtimeProviderConfig, RealtimeProviderCallbacks, ProviderType } from './RealtimeProvider';
import { WebSocketRealtimeProviderBase } from './WebSocketRealtimeProviderBase';
/**
 * Vowel Prime Realtime Provider
 *
 * Implements OpenAI Realtime API protocol over WebSocket (not WebRTC)
 * Connects to Vowel Engine (our internal voice API server)
 *
 * Key Differences from OpenAI:
 * - Uses WebSocket transport (OpenAI uses WebRTC by default)
 * - Requires manual audio streaming via sendAudio()
 * - Uses server-side VAD (voice activity detection)
 * - Custom base URL (prime.vowel.to)
 * - Different voice names (Ashley instead of alloy, etc.)
 */
export declare class VowelPrimeRealtimeProvider extends WebSocketRealtimeProviderBase {
    private baseUrl;
    private pendingConnectError;
    constructor(config: RealtimeProviderConfig, callbacks: RealtimeProviderCallbacks);
    /**
     * Get provider identifier
     */
    getProviderId(): ProviderType;
    /**
     * Set up event listeners for the RealtimeSession
     */
    private setupEventListeners;
    /**
     * Connect to Vowel Prime
     */
    connect(): Promise<void>;
}
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