/**
 * Pleco-Xa io/wav — the ONE WAV codec.
 * Replaces three divergent encoders (xa-wav-encoder, audio-utils.exportBufferAsWav,
 * xa-file._encodeWAV), two of which wrote channel-block PCM under an interleaved
 * header (garbled stereo). Pure JS, runs in Node, browsers, and workers.
 */
/**
 * Encode planar channel data as an interleaved 16-bit PCM WAV file.
 * @param {Float32Array[]} channels - One Float32Array per channel (equal lengths)
 * @param {number} sampleRate
 * @returns {ArrayBuffer} Complete RIFF/WAVE file contents
 */
export function encodeWav(channels: Float32Array[], sampleRate: number): ArrayBuffer;
/**
 * Decode a WAV file into planar Float32Array channels.
 * Supports PCM 16/24/32-bit int and 32-bit float, standard RIFF chunk walking.
 * @param {ArrayBuffer} buffer
 * @returns {{channels: Float32Array[], sampleRate: number}}
 */
export function decodeWav(buffer: ArrayBuffer): {
    channels: Float32Array[];
    sampleRate: number;
};