Questions tagged [signal-processing]
the analysis, interpretation and manipulation of signals
1,044 questions
0 votes
1 answer
84 views
How do gated integration and boxcar averaging recover a signal from a noisy environment?
Following my previous post about an IR optical receiver system (IR optical receiver system circuit), I have been evaluating the best option to demodulate my signal for pulling it out of noisy ...
- 105
0 votes
0 answers
32 views
How to design a passive band reject filter using the second order Chebyshev topology to meet design specifications
The objective is to design a passive band-stop/band reject filter that flattens the sound pressure level (SPL) across 20-20e3 Hz while meeting specs: f_resonant = 2000 Hz, f_cutoff1 = 1561 Hz, ...
- 77
1 vote
1 answer
94 views
Reading Waveform from LeCroy 9310AL via RS232
I am currently trying to read the waveform from my LeCroy9300AL. I do manage to connect to the oscilloscope and retrieve data. But I struggle to interpret this data. My current script is: ...
- 101
6 votes
4 answers
2k views
Dead band in an analog signal
I am trying to design a circuit that has the transfer function reported in this graph: I have an analog signal that goes from 0 to 5V more or less and I want to have a range (in this case from 2.4 to ...
0 votes
0 answers
91 views
Which of these methods of noise filtering would be most effective and minimal (hardware-only)?
I have a system that generates a lot of electrical noise on its signal, so shielding and other mechanical stuff is irrelevant in this case. My main goal is to reduce the noise using as few components ...
- 11
0 votes
0 answers
92 views
Interpreting results of spectrum analyzer in Simulink for the following problem
I have the following setup: In this question I'm supposed to present and explain the spectrum results of for different sampling times (t_s = 0.1, 0.25, 0.5, 0.7, 1 sec), so I created five different ...
- 405
4 votes
0 answers
88 views
Uncertainty principles and signal recovery (Donoho and Stark)
I am trying to reconstruct a signal that has missing samples using the methods proved in the title paper. The paper is readily available (https://web.stanford.edu/dept/statistics/cgi-bin/donoho/wp-...
- 141
2 votes
1 answer
104 views
Interpretation of Laplace Variable
Through my study of circuits and signal processing, it is my understanding that the complete response of an LTI system is the sum of a transient response and a steady-state response. When analyzing ...
- 334
1 vote
1 answer
128 views
Audio decoupling capacitors causing interference
I have been trying to trace engine noise being picked up by what is a faulty car head unit. I know it is the head unit itself as when trying a different unit, the noise disappears. I attempted to use ...
- 204
1 vote
1 answer
151 views
Most important specs to look for in STM32 MCUs for DSP?
I’m planning to design a cost-efficient microcontroller-based DSP development board for audio processing applications (digital filter banks, potential ANC algorithms). While I know DSP chips like the ...
- 105
2 votes
1 answer
241 views
How do FMCW radars achieve simultaneous transmission and reception without disturbing reception
FMCW radars are required to transmit while receiving to continuously produce the "beat intermediate frequency" and thus to work. This notably grants them the advantage of absence of blind ...
- 131
2 votes
3 answers
296 views
Why do sigma-delta ADCs only use integrators?
I am learning about sigma delta convertors and I don't fully understand the reason behind the integrator. As far as I understand, part of what makes it work is the idea of noise shaping, i.e., the ...
- 33
2 votes
3 answers
446 views
How to Achieve 0.1 Hz Resolution from 0 to 10 kHz Using STM32 Timer?
I'm trying to generate output frequencies from 0 Hz to 10,000 Hz using STM32F407VET6 with Timer2 in Output Compare Toggle Mode. The timer clock is 84 MHz. I need to achieve: 0.1 Hz resolution up to ...
- 39
4 votes
1 answer
323 views
Is there any practical reason for the ordering of component values in an LC ladder filter?
Recently, I've been exploring the driving-point impedance procedure for the derivation of double-terminated LC ladder lowpass filters. The driving-point impedance \$\text{Z}_{11}\$ for a doubly-...
- 6,111
3 votes
2 answers
292 views
NRZ Encoding and Clock Recovery
I'm from computer science background and was reading NRZ encoding/decoding in my networking book (by sir Larry L. Peterson) which left me halfway with just small summary. Digging little deeper online ...
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