import { AuphBus } from "../protocol/interface";
import { Obj } from "./common";
export declare class BusObj implements Obj {
    readonly g: GainNode;
    h: number;
    s: number;
    G: number;
    constructor(g: GainNode);
}
export declare const busLine: BusObj[];
export declare function createBusObj(ctx: AudioContext): BusObj;
export declare function initBusPool(ctx: AudioContext): void;
export declare function termBusPool(): void;
export declare function _getBus(bus: AuphBus): BusObj | null;
export declare function _getBusGain(handle: AuphBus): GainNode | undefined;
export declare function _setBusConnected(bus: BusObj, connected: boolean): void;