import { CallQualityWarningEventFanout } from "../../../listeners/CallQualityWarningEventFanout";
import { WebRtcStatsDetector } from "../WebRtcStatsDetector";
import { AudioLevelDetectorHandler } from "../AudioLevelDetectorHandler";
export declare class ZeroAudioLevelDetector extends WebRtcStatsDetector {
    private handler;
    private static readonly AUDIO_LEVEL_KEY;
    private static readonly AUDIO_STATS_COVERED_TIME_SPAN_MS;
    private lastStatTimestamp;
    private statsBuffer;
    constructor(statsIntervalMs: number, handler: AudioLevelDetectorHandler, fanout: CallQualityWarningEventFanout);
    onNewWebRtcStats(report: RTCStatsReport): void;
    private handleNewAudioLevelValue;
}