import * as z from "zod/v3";
import { Result as SafeParseResult } from "../../types/fp.js";
import { SDKValidationError } from "../errors/sdkvalidationerror.js";
/**
 * Optional STT (speech-to-text) VAD configuration for the voice session.
 */
export type SttConfig = {
    /**
     * Server-side VAD silence timeout in ms (100–5000). Controls how long to wait after silence before finalizing speech.
     */
    silenceTimeoutMs?: number | undefined;
    /**
     * Timeout in ms before any speech is detected (1000–30000).
     */
    initialSilenceTimeoutMs?: number | undefined;
};
/** @internal */
export declare const SttConfig$inboundSchema: z.ZodType<SttConfig, z.ZodTypeDef, unknown>;
/** @internal */
export type SttConfig$Outbound = {
    silence_timeout_ms?: number | undefined;
    initial_silence_timeout_ms?: number | undefined;
};
/** @internal */
export declare const SttConfig$outboundSchema: z.ZodType<SttConfig$Outbound, z.ZodTypeDef, SttConfig>;
export declare function sttConfigToJSON(sttConfig: SttConfig): string;
export declare function sttConfigFromJSON(jsonString: string): SafeParseResult<SttConfig, SDKValidationError>;
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