What does modulate mean in science?
What does modulate mean in science?
1 : to tune to a key or pitch. 2 : to adjust to or keep in proper measure or proportion : temper. 3 : to vary the amplitude, frequency, or phase of (a carrier wave or a light wave) for the transmission of information (as by radio) also : to vary the velocity of electrons in an electron beam.
What means by modulation?
Definition of modulation 1 : an inflection of the tone or pitch of the voice specifically : the use of stress or pitch to convey meaning. 2 : a regulating according to measure or proportion : tempering. 3 : a change from one musical key to another by modulating.
What does modulate mean medically?
1. To regulate or adjust to a certain degree: physiological mechanisms that modulate the body’s metabolic rate. 2. Biochemistry To act on (a receptor, for example) as an activator, an inhibitor, or both.
What is a modulator in biology?
(mŏj′ə-lā′tər) n. A substance that modulates the activity of a molecule or a biochemical pathway, especially a receptor modulator.
Why do we use modulation?
Modulation allows us to send a signal over a bandpass frequency range. If every signal gets its own frequency range, then we can transmit multiple signals simultaneously over a single channel, all using different frequency ranges. Another reason to modulate a signal is to allow the use of a smaller antenna.
What is modulation and why is it important?
Modulation is simply a widely used process in communication systems in which a very high-frequency carrier wave is used to transmit the low-frequency message signal so that the transmitted signal continues to have all the information contained in the original message signal.
What is the function of modulation?
Modulation is a term widely used in telecommunication or wireless networks. Modulation basically is used to convert information (digital bit stream or analog audio signal) in the form that can be physically transmitted over the air or cable. Information is referred as baseband or modulating signal.
How do you identify modulation?
22.5 How to Recognize a Key After a Modulation
- Look for recurring accidentals, then add them to the key signature to determine the new key. Lowered notes (like flats) usually create (as do the flats in key signatures)
- If accidentals are canceled out, they indicate tonicizations or chromatic non-chord tones.
What is the work of modulator?
A modulator is a device or circuit that performs modulation. A demodulator (sometimes detector) is a circuit that performs demodulation, the inverse of modulation. A modem (from modulator–demodulator), used in bidirectional communication, can perform both operations.
What is modulation and why it is necessary?
Modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted. It is necessary because of following reasons: Reduction in the height of antenna. Avoids mixing of signals.