Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Time scaling operation is also known as:a)Dow...
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Time scaling operation is also known as:
- a)Down-sampling
- b)Up-sampling
- c)Sampling
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Time scaling operation is also known as:a)Down-samplingb)Up-samplingc)...
Explanation: If the signal x(n) was originally obtained by sampling a signal xa(t), then x(n)=xa(nT). Now, y(n)=x(2n)(say)=xa(2nT). Hence the time scaling operation is equivalent to changing the sampling rate from 1/T to 1/2T, that is to decrease the rate by a factor of 2. So, time scaling is also called as down-sampling.
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Time scaling operation is also known as:a)Down-samplingb)Up-samplingc)...
Time Scaling Operation
Definition: Time scaling is the process of changing the speed of a signal without changing its shape or frequency content.
Operations: Time scaling operation can be performed in two ways:
1. Down-sampling:
Down-sampling is the process of reducing the sample rate of a signal. In other words, it is the process of decreasing the number of samples in a signal. It is also known as decimation.
2. Up-sampling:
Up-sampling is the process of increasing the sample rate of a signal. In other words, it is the process of increasing the number of samples in a signal. It is also known as interpolation.
Application: Time scaling operation is widely used in signal processing. It is used in various applications such as speech recognition, image processing, and audio processing. It is also used in digital filters where it is used to change the cutoff frequency of a filter.
Conclusion: Therefore, the correct option is (a) Down-sampling as time scaling operation refers to the process of changing the speed of a signal, which can be achieved through down-sampling or up-sampling.
Definition: Time scaling is the process of changing the speed of a signal without changing its shape or frequency content.
Operations: Time scaling operation can be performed in two ways:
1. Down-sampling:
Down-sampling is the process of reducing the sample rate of a signal. In other words, it is the process of decreasing the number of samples in a signal. It is also known as decimation.
2. Up-sampling:
Up-sampling is the process of increasing the sample rate of a signal. In other words, it is the process of increasing the number of samples in a signal. It is also known as interpolation.
Application: Time scaling operation is widely used in signal processing. It is used in various applications such as speech recognition, image processing, and audio processing. It is also used in digital filters where it is used to change the cutoff frequency of a filter.
Conclusion: Therefore, the correct option is (a) Down-sampling as time scaling operation refers to the process of changing the speed of a signal, which can be achieved through down-sampling or up-sampling.
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Time scaling operation is also known as:a)Down-samplingb)Up-samplingc)Samplingd)None of the mentionedCorrect answer is option 'A'. Can you explain this answer?
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