Questions tagged [dsp-puzzle]
27 questions
7
votes
3 answers
Nyquist's Stability Criterion and Cauchy's Argument Principle
Background:
Nyquist's Stability Criterion for linear-time-invariant systems makes use of Cauchy's argument principle to determine if any zeros in the characteristic equation are in the right-half plane (positive real roots), given a closed loop…
Dan Boschen
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6
votes
3 answers
More Simultaneous Dynamic Range with Fixed Point or Floating Point?
What data path would have more simultaneous dynamic range: 32 bit fixed-point or 32 bit floating-point? Why?
To clarify "simultaneous dynamic range": This is the ability to discern strong and weak signals at the same time, while dynamic range is…
Dan Boschen
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4
votes
2 answers
DSP Puzzle: What network will create this waveform?
What network consisting of two unit sample delays, three multipliers (with constant gain coefficients), and three adders can we create to convert a square wave into the waveform as shown below:
The waveform is a 1 KHz square wave sampled at 100…
Dan Boschen
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3
votes
5 answers
$9\rm V$ Battery with $45^\circ$ phase
How can you implement a $9\rm V$ battery with a phase of $45^\circ$? (As a black box with a DC Voltage of $9\rm V$ and a phase of $45^\circ$)
Please preface your answer with spoiler notation by typing the following two characters first ">!"
Dan Boschen
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0
votes
1 answer
How and why does sample frequency Fs be mapped to 2π?
Q1: Can anyone give a further explanation on this sentence?
Each time $f_o$ is a multiple of $F_s$, the argument of the exponential is a multiple of $2\pi$
Q2: - must $f_o$ be a multiple of $F_s$?
Ran
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