export default Encoder;
/**
 * @class Encoder
 * @description Spatially encodes input using weighted spherical harmonics.
 * @param {AudioContext} context
 * Associated {@link
https://developer.mozilla.org/en-US/docs/Web/API/AudioContext AudioContext}.
 * @param {Object} options
 * @param {Number} options.ambisonicOrder
 * Desired ambisonic order. Defaults to
 * {@linkcode Utils.DEFAULT_AMBISONIC_ORDER DEFAULT_AMBISONIC_ORDER}.
 * @param {Number} options.azimuth
 * Azimuth (in degrees). Defaults to
 * {@linkcode Utils.DEFAULT_AZIMUTH DEFAULT_AZIMUTH}.
 * @param {Number} options.elevation
 * Elevation (in degrees). Defaults to
 * {@linkcode Utils.DEFAULT_ELEVATION DEFAULT_ELEVATION}.
 * @param {Number} options.sourceWidth
 * Source width (in degrees). Where 0 degrees is a point source and 360 degrees
 * is an omnidirectional source. Defaults to
 * {@linkcode Utils.DEFAULT_SOURCE_WIDTH DEFAULT_SOURCE_WIDTH}.
 */
declare class Encoder {
    constructor(context: any, options: any);
    _context: any;
    input: any;
    _channelGain: any[];
    _merger: any;
    output: any;
    _azimuth: any;
    _elevation: any;
    /**
     * Set the desired ambisonic order.
     * @param {Number} ambisonicOrder Desired ambisonic order.
     */
    setAmbisonicOrder(ambisonicOrder: number): void;
    _ambisonicOrder: number;
    /**
     * Set the direction of the encoded source signal.
     * @param {Number} azimuth
     * Azimuth (in degrees). Defaults to
     * {@linkcode Utils.DEFAULT_AZIMUTH DEFAULT_AZIMUTH}.
     * @param {Number} elevation
     * Elevation (in degrees). Defaults to
     * {@linkcode Utils.DEFAULT_ELEVATION DEFAULT_ELEVATION}.
     */
    setDirection(azimuth: number, elevation: number): void;
    /**
     * Set the source width (in degrees). Where 0 degrees is a point source and 360
     * degrees is an omnidirectional source.
     * @param {Number} sourceWidth (in degrees).
     */
    setSourceWidth(sourceWidth: number): void;
    _spreadIndex: number;
}
declare namespace Encoder {
    /**
     * Validate the provided ambisonic order.
     * @param {Number} ambisonicOrder Desired ambisonic order.
     * @return {Number} Validated/adjusted ambisonic order.
     * @private
     */
    function validateAmbisonicOrder(ambisonicOrder: number): number;
}