Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

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Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

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Under Sampling

When the sampling rate is lower than or equal to the Nyquist rate, a condition defined as under sampling, it is impossible to rebuild the original signal according to the sampling theorem.

An example is illustrated below, where the reconstructed signal built from data sampled at the Nyquist rate is way off from the original signal.

Aliasing
Under sampling causes frequency components that are higher than half of the sampling frequency to overlap with the lower frequency components. As a result, the higher frequency components roll into the resconstructed signal and cause distortion of the signal. This type of signal distortion is called aliasing.

The schematic below repeats the above aliasing argument in the frequency domain.

Spectrum of Sampled Signal
Sampled at less than the Nyquist rate
Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Salary Expectation

8 things to know about the interview question "What's your salary expectation"?

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.