export declare const VOICEID_MODEL: string;
/** Cosine similarity at/above which two embeddings are the same speaker. */
export declare const VOICEID_THRESHOLD: number;
/** Clips shorter than this carry too little voice to fingerprint reliably. */
export declare const MIN_SECONDS = 0.5;
/** Utterance clips are 16kHz mono s16le PCM (written by the audio daemon). */
export declare const SAMPLE_RATE = 16000;
/** True once the model has been loaded (voice-ID is actively resolving). */
export declare function isEmbedderReady(): boolean;
/**
 * Embed 16kHz mono s16le PCM -> L2-normalized 512-d vector.
 * Returns null when the clip is under MIN_SECONDS or the model is
 * unavailable. Never throws.
 */
export declare function embed(pcm: Buffer): Promise<number[] | null>;
/** Cosine similarity of two normalized embeddings (plain dot product). */
export declare function cosine(a: readonly number[], b: readonly number[]): number;