Example image of eyePlorer eyePlorer map for 'FM broadcasting': Broadcasting Edwin Howard Armstrong Frequency modulation High fidelity Radio Technology Conflation Europe Radio spectrum Very high frequency Commonwealth of Independent States Eastern Bloc International Radio and Television Organisation ITU-R Japan Americas Caribbean Africa Greenland Italy FM broadcast band Baseband Frequency Frequency spectrum Noise Transmission (telecommunications) De-emphasis Pre-emphasis RC circuit Time constant Monaural Stereophonic sound Carrier wave Dbx (noise reduction) Federal Communications Commission Multichannel television sound EMI Uniontown, Pennsylvania WLTJ Signal-to-noise ratio Subsidiary communications authority Sound Double-sideband suppressed-carrier transmission Pilot signal Subcarrier Modulation Stereo generator Distortion Louis Dorren Ann Arbor, Michigan