import { FC } from 'react';
/**
 * A small animated bar meter.
 *
 * ★ Deliberately NOT a real audio visualiser. Reading actual microphone
 * amplitude needs `getUserMedia` + an `AnalyserNode`, and this app has neither —
 * the Web Speech API opens its own capture that we never see. Adding a second,
 * parallel microphone stream purely to animate bars would double the permission
 * surface and the battery cost for decoration.
 *
 * What it honestly conveys is LIVENESS: the session is running and in this
 * state. It is `aria-hidden` because it says nothing a screen-reader user can
 * use — the status text and the caption carry the real meaning.
 *
 * When a real VAD stream lands (it is needed for automatic barge-in anyway),
 * this component gets amplitude as a prop and the animation becomes truthful.
 */
interface Props {
    /** Bars animate while true; a flat line while false. */
    active: boolean;
    /**
     * Open, but waiting rather than hearing speech — the correction window.
     * Shorter and slower than full listening, so the pause is visible without
     * implying the microphone closed.
     */
    settled?: boolean;
    /** `speaking` reads as the assistant's voice, `listening` as the user's. */
    tone: "listening" | "speaking";
    expanded?: boolean;
}
export declare const VoiceWaveform: FC<Props>;
export {};
//# sourceMappingURL=VoiceWaveform.d.ts.map