Font size
Worksheets21EC5252_DSP_Unit IV
Total questions: 25
Worksheet time: 12mins
The representation of continous signal amplitude by a fixed digit produces an error is known as
Product quantization error
Input quantization error
Coefficient quantization error
Output quantization error
The quantization method employed in digital systems are
Truncation and rounding
Error and noise
Overflow and scaling
Input and output
The process of reducing the size of a binary number to finite word size of bits
Truncation
Rounding
Quantization
Sampling
Which of the following is done to convert a continuous time signal into discrete time signal?
Modulating
Sampling
Differentiating
Integrating
A high pass filter is
a filter with a bell shaped curve around the filters' active frequency
a filter with a constant level after reaching the filters active frequency
a filter that cuts the high frequency component of a signal
a filter that cuts the low frequency component of a signal
The interface between an analog signal and a digital processor is
D/A converter
A/D converter
Modulator
Demodulator
Which of the following characterizes an analog quantity?
Discrete levels represent changes in a quantity.
Its values follow a logarithmic response curve.
It can be described with a finite number of steps.
It has a continuous set of values over a given range.
Any unwanted signal interfering with the main signal is
System
Noise
Frequency
None
Quantized and coded version of the discrete time signals are
Analog signals
Digital signals
Both A and B
Coded signal
A discrete time signal may be
1) Samples of a continuous signal
2) A time series which is a domain of integers
3) Time series of sequence of quantities
4) Amplitude modulated wave
1, 2 and 3 are correct
1 and 2 are correct
1 and 3 are correct
All the four are correct
The discrete impulse function is defined by
δ(n) = 1, n ≥ 0
= 0, n ≠ 1
δ(n) = 1, n = 0
= 0, n ≠ 1
δ(n) = 1, n ≤ 0
= 0, n ≠ 1
δ(n) = 1, n ≤ 0
= 0, n ≥ 1
How are digital and analog recordings different?
digital signals are continuous
analog signals are higher resolution
digital signals can be better stored electronically
analog signals consist of numerical values recored at a specific time interval
digital signals take up more space
Signal processing technology is used in:::
RADIOS
MOBILE PHONES
COMPUTERS
IN ALL OF THE ITEMS MENTIONED
Signal processing does not play a central role anymore in our modern world.
TRUE
FALSE
DSP stand for Digital Speech Processing
true
false
Nyquist rate is
fs<2fm
fs=fm
fs=2fm
fs<fm
Z{u(n)}=
z−1z;z<1
z−1z;z<−1
z−1z;z>1
z−1z;z=1
What are methods to prevent overflow limit cycle?
76
276
