an apparatus that changes the wave length of a radio signal
frequency-dependent conductance
the act of eliminating frequency waves lower than those of a specified band area
of radio waves, the act of eliminating the frequencies above a certain range
having frequencies above those of audible sound
having frequencies below those of audible sound
a varied mixture of sound waves that covers every frequency range
a filter that passes frequencies above a certain value and attenuates frequencies below that value
a device used to permit only waves of particular frequencies to pass
any of a series of musical tones whose frequencies are integral multiples of the frequency of a fundamental
an electrical device that alters the frequency spectrum of signals passing through it
converter for converting a signal from one frequency to another