export declare const BYTE_UNIQUE_VALUES = 256;
export declare const MILLISECONDS_IN_SECOND = 1000;
export declare const NYQUIST_TWICE = 2;
export declare const SILENCE_FREQUENCY = 0;
export declare const FREQUENCY_08_0_KHZ = 8000;
export declare const FREQUENCY_16_0_KHZ = 16000;
export declare const FREQUENCY_19_5_KHZ = 19500;