Verb
To form, as sound, to a certain key, or to a certain portion.
To vary or inflect in a natural, customary, or musical manner; as, the organs of speech modulate the voice in reading or speaking.
To pass from one key into another.
Source: Webster's dictionaryregulate the temperature Source: Internet
modulate the pitch Source: Internet
modulate the melody Source: Internet
Additionally the hardware allows one channel in a channel pair to modulate the other channel's period or amplitude. Source: Internet
Although for the simplest reflexes there are short neural paths from sensory neuron to motor neuron, there are also other nearby neurons that participate in the circuit and modulate the response. Source: Internet
Another commonly used frequency domain representation uses the Fourier series coefficients to modulate a Dirac comb : : where f represents a continuous frequency domain. Source: Internet