Worksheetsunit 1 ADSP quizz
Total questions: 11
Worksheet time: 6mins
The convolution of two signals in the time domain is equivalent to:
Multiplication in time domain
Addition in frequency domain
Multiplication in frequency domain
Correlation in frequency domain
Which property of convolution is correct?
Non-commutative and non-associative
Commutative and associative
Commutative but not associative
Neither distributive nor associative
The DFT converts a sequence of length N into:
Continuous spectrum
Discrete-time sequence of infinite length
N-point discrete frequency spectrum
Laplace domain representation
Which of the following is not true about DFT?
It is periodic in frequency domain
It can be computed efficiently using FFT
It represents continuous frequency values
It maps time domain sequence to frequency domain
The region of convergence (ROC) in Z-transform must be:
Always entire z-plane
Annular region in the z-plane
Only at z = 0
Only at z = ∞
Decimation in multirate processing refers to:
Increasing the sampling rate
Decreasing the sampling rate
Shifting frequency spectrum
Removing aliasing components
Interpolation is the process of:
Reducing the sampling rate
Increasing the sampling rate
Filtering high frequency signals
Frequency shifting
Sampling rate conversion by a rational factor L/M is achieved by:
Interpolation by L and decimation by M
Decimation by L and interpolation by M
Filtering by L/M
Direct DFT computation
A filter bank is used in multirate DSP for:
Single frequency analysis
Splitting signal into subbands for efficient processing
Removing aliasing only
Increasing time-domain resolution
Subband coding is primarily used in:
Image compression
Speech and audio coding
Channel equalization
Spectrum sensing
A Quadrature Mirror Filter (QMF) is designed such that:
Its low-pass and high-pass filters are mirror images in time domain
Its low-pass and high-pass filters are mirror images in frequency domain
Its filters are only identical
It has no aliasing property
