Post a Comment. Difference Between Attenuation and Distortion. Attenuation and distortion are the types of impairment occur in the signal, in another word these are undesired effects on the signals.
The main key difference between the attention and distortion is that the attenuation of the signal losses some part of energy where the amplitude of the signal may decrease. While other words, distortion is the change in the waveform of the signal due to noise.
Here this article gives information about the main key difference between attenuation and distortion to better understand this topic. What is attenuation? Attenuation can be known as the power loss of a signal traveling through any media.
It is a basic natural phenomenon and occurred due to wave characteristics such as refraction, reflection, and diffraction. For instance, sound waves containing our vice cannot be heard at a long distance due to attenuation.
What is the Distortion? Distortion is basically known as the alternation of the original signal. This may happen due to there properties of the medium. There are many types of distortion such as amplitude distortion, harmonic distortion, and phase distortion and so many more. For electromagnetic wave polarization distortions also occurs when the distortion occurs, the shape of the waveform is changed. The main key difference between attenuation and distortion:.
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Level 1: Introductory. Course rewards. Free statement of participation on completion of these courses. Create your free OpenLearn profile. Course content Course content. IT: device to device communication Start this free course now. Free course IT: device to device communication. Activity self-assessment To test your understanding of what you have read so far about signals, try to write down answers to these questions.
What is meant by the term 'modulation'? Why might a signal become attenuated as it travels? Answer Answers The frequency of an electromagnetic wave is measured in units of Hertz. Energy from a signal is absorbed by the transmission medium. This weakens the signal. Previous 2. The signal must be sufficiently high for being detected at the destination even in the presence of the noise.
Additionally, attenuation of different frequency components is not the same, some frequencies are highly attenuated, and some suffer low attenuation. This reliance of the attenuation of the channel on the frequency of the signal rises the distortion. Basis for comparison Attenuation Distortion Shape of waveform Does not change Altered Obliteration of the effects Easily removed Harder Relationship Reduction in amplitude, and cause of distortion.
Attenuation occurs in different amounts at different parts of the signal. When a signal travels in space through a medium, it loses some part of its energy.
Similarly, a wire allowing the electric current electrical signals to flow through it gets heated due to the resistance produced by the medium.
In the above-given example, the energy of the electrical signal is dissipated in the form of heat. The diminution of the power or energy is known as attenuation. This loss is measured in decibels per kilometre.
Every element is propagated at a distinct speed; as a result, the Fourier spectrum received at the receivers end is different.
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