/**
 * More optimized version of `waveForm` which utilizes the `Uint8Array` type.
 *
 * @pure this function is determinstic and does not mutate state.
 *
 * @param array the `Uint8Array` to find the waveform value of.
 *
 * @returns the waveform value for `array`, AKA the difference between the maximum and minimum values.
 **/
declare function waveFormUint(array: Uint8Array): number;
/**
 * @pure this function is determinstic and does not mutate state.
 *
 * @param array the array to find the waveform value of.
 *
 * @returns the waveform value for `array`, AKA the difference between the maximum and minimum values.
 **/
declare function waveForm(array: number[]): number;
/**
 * The `waveForm` functions return a higher value for a higher waveform value.
 * However, the higher the value fed as y to the canvas,
 * the smaller the wave - so we want to reverse the wave form,
 * so that a large waveform value is displayed as a large wave on the canvas
 *
 * @param audioData the audio data to get a useable frequency value for.
 *
 * @returns the frequency value for `audioData`; AKA the Uint8 maximum minus the waveform value.
 *
 * @pure this function is determinstic and does not mutate state.
 **/
declare function frequencyValue(audioData: Uint8Array): number;

export { frequencyValue, waveForm, waveFormUint };