import IParamsConfig from "../../interfaces/ParamsConfig";
import { BackendService } from "../backend/BackendService";
import { ProctoringSession } from "../proctoring/ProctoringSession";
import { CameraRecorder } from "./CameraRecorder";
import { UploadService } from "../upload/UploadService";
import { ProctoringSessionOptions } from "../../proctoring/options/ProctoringOptions";
import { IRecorder } from "./IRecorder";
export declare class NoiseRecorder implements IRecorder {
    private onRealtimeAlertsCallback;
    private optionsProctoring;
    private proctoringSession;
    private cameraRecorder;
    private audioRecorder;
    private intervalNoiseDetection;
    private volumeMeter;
    private recordingInProgress;
    private paramsConfig;
    private recordIndex;
    private countLoopTimes;
    private examStartTime;
    private recordingStartTime;
    private recordingEndTime;
    private isSpeech;
    private audioClassifier;
    private audioClassificationResult;
    private context;
    private audioWorkletNode;
    upload: UploadService | undefined;
    backend: BackendService | undefined;
    backendToken: string | undefined;
    proctoringId: string | undefined;
    private preRollBuffer;
    private recordingChunks;
    private readonly PRE_ROLL_SECONDS;
    private readonly SAMPLE_RATE;
    private readonly MAX_PRE_ROLL_CHUNKS;
    private lastNoiseTime;
    private readonly SILENCE_THRESHOLD;
    constructor(optionsProctoring: ProctoringSessionOptions, proctoringSession: ProctoringSession, paramsConfig: IParamsConfig, cameraRecorder: CameraRecorder, onRealtimeAlertsCallback: (response: any) => void, backend?: BackendService, backendToken?: string);
    setProctoringId(proctoringId: string): void;
    startRecording(): Promise<void>;
    stopRecording(): Promise<void>;
    pauseRecording(): Promise<void>;
    resumeRecording(): Promise<void>;
    saveOnSession(session: ProctoringSession): Promise<void>;
    private onNoiseDetectedRecord;
    private stopSoundRecord;
    private download;
    private uploadRecord;
    private hasDesiredResult;
    private createAudioClassifier;
    private streamingAudioClassification;
}