/**
 * 预设信息
 */
export interface AudioConfigPresetInfo {
    name: string;
    autoGainControl: boolean;
    echoCancellation: boolean;
    noiseSuppression: boolean;
    voiceActivatedUnmute: boolean;
    noiseThreshold: number;
    sampleRate: number;
    channelCount: number;
    sampleSize: number;
    opusStereo: boolean;
    opusDtx: boolean;
    opusFec: boolean;
    opusPtime: number;
    opusMaxPlaybackRate: number;
}
/**
 * 音频预设信息
 */
export declare const audioConfigPresets: Record<string, AudioConfigPresetInfo>;