What is a meaning 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 is modulation in simple words?
Modulation is the process of converting data into radio waves by adding information to an electronic or optical carrier signal. A carrier signal is one with a steady waveform — constant height, or amplitude, and frequency.
What is modulation and example?
For example, the modulation signal might be an audio signal representing sound from a microphone, a video signal representing moving images from a video camera, or a digital signal representing a sequence of binary digits, a bitstream from a computer. The carrier is higher in frequency than the modulation signal.
What does a modulation do?
In audio, a Modulator is something that changes (modifies) the original sound or signal over time. Modulating a sound can add a sense of movement, add or change dimension, or create depth.
What is modulation in speaking?
Modulation is when you control or adjust something, like when you lower your voice to a loud whisper in order to make what you’re saying more dramatic and mysterious.
What does modulation mean in psychology?
Response modulation refers to efforts to modify an emotion after it has been fully generated. The most frequent form of this ER strategy is suppression, or volitional inhibition of verbal and behavioral expressions of emotions.
What is modulation communication?
Modulation is the process of encoding information from a message source in a way that is suitable for transmission. By superimposing a message on to a high frequency signal known as a carrier wave (or sinusoidal signal), video, voice and other data can be transmitted.
What does modulation actually do to a message and carrier?
This process of imposing an input signal onto a carrier wave is called modulation. In other words, modulation changes the shape of a carrier wave to somehow encode the speech or data information that we were interested in carrying. Modulation is like hiding a code inside the carrier wave.
What is modulation process?
Modulation is the process of encoding information from a message source in a way that is suitable for transmission. In the modulation process, a parameter of the carrier wave (such as amplitude, frequency or phase) is varied in accordance with the modulating signal. This variation acts as a code for data transmission.
How do you modulate a voice in a presentation?
Let’s find out:
- Be Loud and Clear. Being loud does’t mean that you have to shout.
- Practise Variation. You can look up for some steps that you can practise in order to develop the desired voice.
- Stress on Powerful Words.
- Create a Crowd Pleasing Speech.
- Effective Pauses.
- Avoid Ahs and Uhms.
- Sound Enthusiastic and Confident.
What are the disadvantages of modulation?
Disadvantages of Amplitude Modulation: An amplitude modulation signal is not efficient in terms of its power usage. It is not efficient in terms of its use of bandwidth. AM detectors are sensitive to noise hence an amplitude modulation signal is prone to high levels of noise. Reproduction is not high fidelity.
What is modulation why do we need modulation?
By using modulation to transmit the signals through space to long distances, we have removed the need for wires in communication systems. The technique of modulation helped humans to become wireless.
Which performs modulation and demodulation?
Both modulation and demodulation aim to achieve transfer of information with the minimum distortion,minimum loss and efficient utilization of spectrum.
What is the formula for modulation?
The modulation index is ratio of modulating signal voltage(Vm) to the carrier voltage(Vc). The modulation index equation is as follows. m = Vm/Vc. The modulation index should be a number between 0 and 1.