A FREQUENCY component in a SPECTRUM produced by a MODULATION of the original SIGNAL. In the case of amplitude and frequency modulation, sidebands occur in pairs on either side of the CARRIER frequency at a distance equal to the modulating frequency.
Amplitude modulation spectrum of two sine waves, carrier C and modulator M, showing the addition of a pair of sidebands, C + M and C - M, around the carrier.
Compare: AURAL HARMONICS, BAND, DIFFERENCE TONE, MODULATED CARRIER, PARTIAL, SUBHARMONIC, SUMMATION TONE.
See AMPLITUDE MODULATION and FREQUENCY MODULATION for other diagrams and sound examples, and the FM Tutorial for sideband calculation.
home
