Preview Questions Signal Processing Engineer | Role Specific Skill

Question 1: In Digital Signal Processing (DSP), what is the purpose of the Fast Fourier Transform (FFT)?

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To remove phase distortion from the signal

To filter high-frequency noise from the signal

To compute the frequency spectrum of a signal efficiently

To convert a signal into its time-domain representation

Question 2: In machine learning-based signal processing algorithms, which of the following is crucial for feature extraction?

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It reduces dimensionality and highlights essential characteristics

It classifies signals into distinct groups

It normalizes the input data to the same scale

It increases the number of features to improve model accuracy

Question 3: Which codec is primarily used for lossless audio compression?

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AAC (Advanced Audio Coding)

FLAC (Free Lossless Audio Codec)

MP3 (MPEG Audio Layer III)

WAV (Waveform Audio File Format)

Question 4: What is the effect of increasing the order of an FIR filter?

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Increases computational cost and sharpens cutoff

Decreases the phase delay

Widens the passband

Reduces filter stability

Question 5: In signal processing, what is the Gaussian filter typically used for?

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To smooth signals and reduce high-frequency noise

To amplify low-frequency signals

To encode signals for transmission

To perform frequency-domain analysis

Question 6: In the context of image filtering, what is the primary function of a median filter?

Which action should you take?

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To preserve the image resolution while removing low-frequency noise

To enhance the sharpness of the image

To remove high-frequency noise while preserving edges

To smooth the image and reduce blur