A frequency modulation method, system and computer readable-medium for enabling high speed, reliable and simple digital data modulation, transmission and reception. The system of the present invention includes a Synthetic Harmonic Waveform Generator for generating harmonic waves of the form cos(2πƒ dev t) from a digital data bit stream. The system of the present invention uses the generated harmonic waves to create a frequency modulation signal of the form sin(2πƒ carrier t±2πƒ dev t), which is then transmitted. The present invention also includes a demodulation technique for receiving a signal of the form sin(2πƒ carrier t±2πƒ dev t), which is used to determine whether a "1" or "0" digital bit has been transmitted.