EE141 Lab 4

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California State University, Long Beach *

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141

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Electrical Engineering

Date

Jan 9, 2024

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pdf

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Uploaded by GrandMuleMaster855

Laboratory 4: Sampling and Aliasing Christian Velasco- (SID): 862166334 EE141 SECTION 022

Abstract ===================================================================== The objective of this lab is to familiarize ourselves with the usage of sampling in continuous signals. We will achieve said task by implementing practical reconstruction filters, while staying completely in the discrete-time domain. We will also compare signals by using inadequate sampling techniques and rates. Procedure ===================================================================== Question 1:

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b.) yes I observed new content c.) yes more activity and the aliasing effect I believe is more apparent. d.) yes I see the replicas and still hear the same effect. Question 2

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b.) the sound was pretty mechanical c.) unwanted replicas are suppressed better and the mechanical sound did get better as well d.) same as the previous question as it did get better. Conclusion ===================================================================== Through the lab I was able to gain a deeper understanding of discrete time domain and implementations of practical reconstruction filters. All said and done I was able to complete the lab to the best of my ability and in doing so i Practiced the development of my matlab code in playing audio files through different filters as well as different sampling rates. Questions ===================================================================== N/A