/** Shared classifier types, free of any numbl import. */

/** The internal rate classification runs at; the take and the training
 *  snippets are both reduced to this, matching the audio-spike-sorting
 *  benchmark, so algorithms transfer between the two apps unchanged. */
export const CLF_FS = 16000;
/** Snippet window around each training onset at CLF_FS (20 ms / 180 ms). */
export const CLF_PRE = Math.round(0.02 * CLF_FS);
export const CLF_POST = Math.round(0.18 * CLF_FS);

export interface Detection {
  /** Event time in seconds. */
  t: number;
  /** 0-based index into the trained-voice list. */
  typeIndex: number;
}

export interface TrainingArrays {
  names: string[];
  pre: number;
  /** Per voice: column-major [snipLen x count] snippet matrix. */
  snips: { data: Float32Array; snipLen: number; count: number }[];
}