export interface Session {
    input_audio_format: "pcm16" | "g711_ulaw" | "g711_alaw";
    input_audio_noise_reduction?: {
        type: "near_field" | "far_field";
    };
    input_audio_transcription: {
        model: "gpt-4o-transcribe" | "gpt-4o-mini-transcribe";
        prompt?: string;
        language?: string;
    };
    turn_detection: {
        type: "semantic_vad" | "server_vad";
        threshold?: number;
        prefix_padding_ms?: number;
        silence_duration_ms?: number;
        eagerness?: "low" | "medium" | "high" | "auto";
    };
}
export interface WebSocketMessage {
    type: "transcription_session.created" | "conversation.item.created" | "conversation.item.input_audio_transcription.delta" | "transcription_session.update" | "input_audio_buffer.speech_started" | "conversation.item.input_audio_transcription.completed" | "input_audio_buffer.committed" | "input_audio_buffer.speech_stopped";
}
export interface CompletedWebSocketMessage extends WebSocketMessage {
    type: "conversation.item.input_audio_transcription.completed";
    transcript: string;
}
export declare const isCompletedWebSocketMessage: (message: WebSocketMessage) => message is CompletedWebSocketMessage;
export interface SpeechStartedWebSocketMessage extends WebSocketMessage {
    type: "input_audio_buffer.speech_started";
    transcript: string;
}
export declare const isSpeechStartedWebSocketMessage: (message: WebSocketMessage) => message is SpeechStartedWebSocketMessage;
export interface InputAudioTranscriptionDeltaWebSocketMessage extends WebSocketMessage {
    type: "conversation.item.input_audio_transcription.delta";
    delta: string;
}
export declare const isInputAudioTranscriptionDeltaWebSocketMessage: (message: WebSocketMessage) => message is InputAudioTranscriptionDeltaWebSocketMessage;
export interface ConversationItemCreatedWebSocketMessage extends WebSocketMessage {
    type: "conversation.item.created";
}
export declare const isConversationItemCreatedWebSocketMessage: (message: WebSocketMessage) => message is ConversationItemCreatedWebSocketMessage;