import EventEmitter from './EventEmitter';
import { Transport } from './transport/Transport';
export declare const enum VolumesDetectorEvent {
    VOLUMES_DETECTED = "VOLUMES_DETECTED"
}
export declare class VolumesDetector extends EventEmitter {
    private _detectors;
    private _interval;
    private _activeParticipants;
    private _removedParticipants;
    private _topology;
    constructor(transport: Transport);
    destroy(): void;
    private _onRemoteTrackAdded;
    private _onRemoteTrackRemoved;
    private _collectVolumes;
    private _getAudioTrackLevelByParticipantId;
    private _getTransparentAudioLevelByParticipantId;
    private _onSignalledActiveParticipants;
    private _onTopologyChanged;
    private _isTransparentAudioMode;
    private _destroyDetectors;
}