/**
 * Rhythm analysis helpers: autocorrelation tempograms, tempo-candidate
 * ranking, and groove/swing analysis for DJ applications.
 *
 * NOTE (collision resolution, v2 wave 2): this module no longer exports
 * `tempo`, `beat_track`, or `dp_beat_track`. The canonical tempo/beat
 * engine lives in ./xa-beat-tracker.js. The `dp_beat_track`
 * implementation that used to live here had a verified backtracking bug
 * (indexOf of a float score in an index array) and was deleted outright.
 * What remains are the distinctly-named, salvageable helpers.
 */
/**
 * Compute tempogram using autocorrelation
 * @param {Array} onset_env - Onset strength envelope
 * @param {number} sr - Sample rate
 * @param {number} hop_length - Hop length
 * @param {number} ac_size - Autocorrelation size in seconds
 * @returns {Array} Tempogram
 */
export function compute_tempogram(onset_env: any[], sr: number, hop_length: number, ac_size: number): any[];
/**
 * Find tempo candidates from tempogram
 * @param {Array} tempogram - Autocorrelation tempogram
 * @param {number} sr - Sample rate
 * @param {number} hop_length - Hop length
 * @param {number} max_tempo - Maximum tempo
 * @param {number} min_tempo - Minimum tempo
 * @returns {Array} Tempo candidates sorted by strength
 */
export function find_tempo_candidates(tempogram: any[], sr: number, hop_length: number, max_tempo: number, min_tempo: number): any[];
/**
 * Find peaks with prominence calculation
 * @param {Array} signal - Input signal
 * @param {number} min_prominence - Minimum prominence
 * @returns {Array} Peak objects with prominence
 */
export function find_peaks_with_prominence(signal: any[], min_prominence?: number): any[];
/**
 * Apply tempo prior (favor common dance music tempos)
 * @param {Array} candidates - Tempo candidates to modify
 */
export function apply_tempo_prior(candidates: any[]): void;
/**
 * Detect tempo multiples and submultiples
 * @param {number} base_tempo - Base tempo in BPM
 * @param {Array} candidates - All tempo candidates
 * @returns {Object} Tempo relationships
 */
export function detect_tempo_multiples(base_tempo: number, candidates: any[]): any;
/**
 * Estimate groove and timing feel
 * @param {Array} beat_times - Beat times in seconds
 * @param {number} sr - Sample rate
 * @returns {Object} Groove analysis
 */
export function analyze_groove(beat_times: any[], _sr: any): any;