/**
 * Decode 5-bit encoded voice message waveform into
 * an array of waveform values (0-32).
 *
 * @param wf  Encoded waveform
 */
export declare function decodeWaveform(wf: Uint8Array): number[];
/**
 * Encode an array of waveform values into
 * 5-bit encoded voice message waveform into
 *
 * @param wf  Waveform values
 */
export declare function encodeWaveform(wf: number[]): Uint8Array;