import { EventEmitter } from '@angular/core';
export declare class AudioSequence {
    private buffer;
    private context;
    private node;
    private state;
    private startedAt;
    private pausedAt;
    onplay: EventEmitter<any>;
    onpause: EventEmitter<any>;
    onstop: EventEmitter<any>;
    constructor(buffer: AudioBuffer, context: AudioContext);
    /**
     * Play the audiosequence. If the sequence was paused before it will start from the paused position
     * @param start optional parameter to play the sequence from a certain position (in seconds)
     * @param end optional parameter to play the sequence upto a certain position (in seconds)
     */
    play(start?: number, end?: number): void;
    /**
     * Pause the audio sequence
     */
    pause(): void;
    /**
     * Stop the audio sequence
     */
    stop(): void;
    getSection(start: number, end: number): Float32Array[];
    /**
     * Insert a section into the sequence at a given position
     * @param at time (in seconds) to insert at
     * @param buffer section to insert
     */
    insert(at: number, buffer: Float32Array[]): void;
    /**
     * Remove a section of the audio sequence
     * @param start time (in seconds) for the start of the section
     * @param end time (in seconds) for the end of the section
     */
    trim(start: number, end: number): void;
    getDuration(): number;
    getCurrentTime(): number;
    setCurrentTime(time: number): void;
    getBuffer(): AudioBuffer;
    private clearNode();
    private timeToIndex(t);
}