Preview Questions Signal Processing Engineer | Role Specific Skill

Question 1: Which of the following algorithms is most efficient for adaptive filtering in real-time systems?

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FFT

PCA (Principal Component Analysis)

DCT (Discrete Cosine Transform)

LMS (Least Mean Squares)

Question 2: In an IIR filter design, what determines the stability of the system?

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Maximum phase delay

Zeros inside the unit circle

High-pass response

Poles inside the unit circle

Question 3: In digital communication, what does QAM (Quadrature Amplitude Modulation) combine?

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Amplitude and phase

Frequency and phase

Time and amplitude

Amplitude and frequency

Question 4: In the context of morphological image processing, what is the effect of dilation on an image?

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It shrinks the boundaries of foreground objects

It enlarges the boundaries of foreground objects

It removes small details from the image

It smooths out sharp edges in the foreground objects

Question 5: Which characteristic of IIR filters makes them less desirable than FIR filters for some applications?

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Inability to achieve high stopband attenuation

Non-linear phase response

Longer delay

Higher computational cost

Question 6: What is the primary purpose of Fourier Transform in image processing?

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To identify image features and objects

To reduce the image size

To transform an image into frequency domain for filtering

To enhance image quality