Prelim Exam in Digital Signal
Processing (Part 2) questions and
answers already graded A+
(GUARANTEED SUCCESS)
Transforms model - answer 1. A signal is a collection of waveforms of a
particular form: sinusoids for the Fourier transform, mother wavelets for
the wavelet transforms, periodic basis functions for the periodicity
transforms.
Signal - answer 2. They exist as a function of time.
Z Transform - answer 3. They are considered equivalent to Laplace
transform when we are talking about transformations of signals.
Frequency Response - answer 5. Is the quantitative measure of the output
spectrum of a system or device in response to a stimulus, and is used to
characterize the dynamics of the system.
Discrete Time Signals - answer 9. A signal is defined only at discrete time
instances, usually represented by a sequence x[n] where n is an integer.
Analog Signal - answer 10. A signal whose values are continous in both
time and amplitude.
Reconstruction - answer The digital signal is used to recreate the original
analog signal.
The digital values are used to generate discrete points, and then this
points are connected a reconstruct a continous waveform.
, What is the role of ADC and DAC in signal transformation? (Transfer
method) - answer The role of ADC to DAC is that they have the task for the
signal to be filtered out for the signal to be deconstructed.
Signal-to-noise ratio - answer 23. Noise in the signal can degrade SNR,
engineers employ noise reduction techniques and filters to improve the
quality of processed signals.
Transform - answer 28. Converting signals form one domain to another,
such as time-doimain to frequency-domain using Fourier or wavelet
transforms.
I/O interface - answer 30. Interfaces like USB, Ethernet, or wireless
connections allow the DSP system to communicate with other devices,
tranfer data, or connect to larger networks.
Reproducibility - answer 31. The same processing applied to the same
digital data will yield consistent output, which is essential in various
applications such as research, testing, and quality control.
Multifunctionality - answer 32. A single digital processor can perform a
wide variety of signal-processing tasks. This reduces the need for multiple
dedicated analog devices, simplifying system design and reducing costs.
Smoothing - answer 35. Since the reconstructed signal consists of discrete
points, it can appear jagge. To smooth out the signal and create a
continous analog-like waveform, a recontruction filter is applied. This filter
removes the higher-frequency components introduced during the
reconstruction process.
Control Systems - answer Classification used to described the behaviour of
the system in signal processing and control theory.
time-varying - answer Its characteristic, parameter, or behaviour changes
with time.
Processing (Part 2) questions and
answers already graded A+
(GUARANTEED SUCCESS)
Transforms model - answer 1. A signal is a collection of waveforms of a
particular form: sinusoids for the Fourier transform, mother wavelets for
the wavelet transforms, periodic basis functions for the periodicity
transforms.
Signal - answer 2. They exist as a function of time.
Z Transform - answer 3. They are considered equivalent to Laplace
transform when we are talking about transformations of signals.
Frequency Response - answer 5. Is the quantitative measure of the output
spectrum of a system or device in response to a stimulus, and is used to
characterize the dynamics of the system.
Discrete Time Signals - answer 9. A signal is defined only at discrete time
instances, usually represented by a sequence x[n] where n is an integer.
Analog Signal - answer 10. A signal whose values are continous in both
time and amplitude.
Reconstruction - answer The digital signal is used to recreate the original
analog signal.
The digital values are used to generate discrete points, and then this
points are connected a reconstruct a continous waveform.
, What is the role of ADC and DAC in signal transformation? (Transfer
method) - answer The role of ADC to DAC is that they have the task for the
signal to be filtered out for the signal to be deconstructed.
Signal-to-noise ratio - answer 23. Noise in the signal can degrade SNR,
engineers employ noise reduction techniques and filters to improve the
quality of processed signals.
Transform - answer 28. Converting signals form one domain to another,
such as time-doimain to frequency-domain using Fourier or wavelet
transforms.
I/O interface - answer 30. Interfaces like USB, Ethernet, or wireless
connections allow the DSP system to communicate with other devices,
tranfer data, or connect to larger networks.
Reproducibility - answer 31. The same processing applied to the same
digital data will yield consistent output, which is essential in various
applications such as research, testing, and quality control.
Multifunctionality - answer 32. A single digital processor can perform a
wide variety of signal-processing tasks. This reduces the need for multiple
dedicated analog devices, simplifying system design and reducing costs.
Smoothing - answer 35. Since the reconstructed signal consists of discrete
points, it can appear jagge. To smooth out the signal and create a
continous analog-like waveform, a recontruction filter is applied. This filter
removes the higher-frequency components introduced during the
reconstruction process.
Control Systems - answer Classification used to described the behaviour of
the system in signal processing and control theory.
time-varying - answer Its characteristic, parameter, or behaviour changes
with time.
