/**
 * Linear-interpolation resampler for streaming Float32 audio. Stateful across
 * `process()` calls so chunk boundaries don't introduce phase discontinuities:
 * the last input sample and a fractional read position are carried over.
 *
 * Linear interpolation is good enough for ASR ingest — the downstream
 * StreamingTranscriber band-limits at the target rate anyway, and a polyphase
 * filter would be overkill in the AudioWorklet hot path. If a customer needs
 * higher quality they can supply their own VadDetector + bypass the encoder.
 */
export declare class LinearResampler {
    private readonly sourceRate;
    private readonly targetRate;
    private readonly ratio;
    private lastSample;
    private fractional;
    constructor(sourceRate: number, targetRate: number);
    process(input: Float32Array): Float32Array;
    reset(): void;
}
/** Convert Float32 PCM (-1..1) to little-endian Int16 PCM. */
export declare function float32ToPcm16(input: Float32Array): ArrayBuffer;