import type { PerspectiveCamera } from 'three';
/**
 * Decodes first-order ambisonic (FOA) AmbiX audio to binaural stereo.
 *
 * Uses Omnitone (Google Chrome Labs) for spatial audio decoding.
 * The soundfield rotation is updated each frame from the Three.js camera's
 * world matrix, keeping audio orientation in sync with the visual scene.
 *
 * Audio graph:
 *   MediaElementSource → FOARenderer.input → FOARenderer.output → AudioContext.destination
 */
export declare class AmbisonicRenderer {
    private foaRenderer;
    private context;
    private rotationMatrix;
    /**
     * Initialize the FOA decoder and connect the audio graph.
     *
     * @param context - The AudioContext
     * @param sourceNode - MediaElementAudioSourceNode from the video element
     */
    init(context: AudioContext, sourceNode: MediaElementAudioSourceNode): Promise<void>;
    /**
     * Update the soundfield rotation from the camera's world matrix.
     * Called each frame from the renderer tick loop.
     */
    updateOrientation(camera: PerspectiveCamera): void;
    /** Dispose audio resources */
    dispose(): void;
    /**
     * Dynamically import Omnitone.
     * Falls back to window.Omnitone if a CDN script tag is used.
     */
    private loadOmnitone;
}
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