an apparatus that changes the wave length of a radio signal
frequency-dependent conductance
having frequencies above those of audible sound
having frequencies below those of audible sound
any of a series of musical tones whose frequencies are integral multiples of the frequency of a fundamental
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
high frequency waves that transmit signals of coded information
a varied mixture of sound waves that covers every frequency range
A tuning fork produces a pure tone of a specific frequency.
a filter that passes frequencies above a certain value and attenuates frequencies below that value