import { type MediaAsset, type MediaTrack } from './mediaTracks.js';
export interface MixerChannelState {
    trackId: string;
    volume: number;
    pan: number;
    muted: boolean;
    solo: boolean;
}
export interface AudioProject {
    version: 1;
    sampleRate: number;
    bpm?: number;
    durationMs: number;
    tracks: MediaTrack[];
    assets: MediaAsset[];
    mixer: MixerChannelState[];
}
export declare function emptyAudioProject(partial?: Partial<Omit<AudioProject, 'version'>>): AudioProject;
export declare function createDemoAudioProject(): AudioProject;