Preview Questions Signal Processing Engineer | Role Specific Skill

Question 1: Which technique in image processing is used to remove noise from an image while preserving the edges?

Which action should you take?

Choose only one option

Adaptive thresholding

Gaussian blur

Median filter

Wiener filter

Question 2: What is the primary challenge when downsampling an audio signal in real-time?

Which action should you take?

Choose only one option

Aliasing and loss of high-frequency information

Data loss due to bit depth reduction

Increased computational complexity

Signal distortion

Question 3: What is the effect of increasing the order of an FIR filter?

Which action should you take?

Choose only one option

Increases computational cost and sharpens cutoff

Decreases the phase delay

Widens the passband

Reduces filter stability

Question 4: In audio source separation, which algorithm is most commonly used for separating mixed audio sources?

Which action should you take?

Choose only one option

Fast Fourier Transform (FFT)

Wavelet Transform

Principal Component Analysis (PCA)

Independent Component Analysis (ICA)

Question 5: What is the primary purpose of the Hough Transform in image analysis?

Which action should you take?

Choose only one option

Shape detection like lines or circles

Noise reduction

Texture analysis

Edge detection

Question 6: In speech signal processing, which technique is commonly used for feature extraction?

Which action should you take?

Choose only one option

Fast Fourier Transform (FFT)

Mel-Frequency Cepstral Coefficients (MFCC)

Principal Component Analysis (PCA)

Wavelet transform