Questions tagged [signal]
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37 questions
0 votes
0 answers
32 views
Correlated Double Sampling and Saturation Effects
I want to understand the effects of saturation on a detector that uses correlated double sampling (CDS). It was explained to me by a colleague but it still hasn't completely set in. This is in regards ...
1 vote
0 answers
54 views
Can a USB-C adapter / connector improve cell phone reception?
I was searching for a USB-C cable, with an L-Shaped connector, on Amazon when I came across this USB-C adapter / connector - CableCreation Right Angle USB C Adapter, USB C Male to Female 90 Degree ...
0 votes
0 answers
33 views
Weird beep when using audio interface
I’m experiencing this very weird beep which randomly (usually with a maximum interval of 5 minutes between occurrences) comes out when connecting my guitar to the PC through my M-AUDIO MTrack II Plus ...
0 votes
0 answers
87 views
How to get the difference equation from second-order digital filter block diagram?
[![enter image description here][1]][1] Here I have a diagram and I am trying to create a difference equation for the filter. I've been using practice examples to try figure this one out however I am ...
1 vote
1 answer
205 views
Finding a signal output $y(n)$ with input signal $x(n)$ and impulse response $h(n)$ with a DTFT
I am studying for my Digital Signal Processing course and I am stucking on the following exercise: Given an $\text{LTI}$-system with input signal $$x(n)=\frac{1}{4^n}u(n)$$ and impulse response $$h(n)...
0 votes
0 answers
101 views
How to send a TTL trigger signal remotely
Sorry if this is a dumb question, but I am an undergrad intern working on a semi-independent project in a lab, and no one here can really help me with this. I am trying to control a lab instrument ...
2 votes
0 answers
74 views
When working with generic electrically shielded signal cable, can I treat the unshielded strands of wire as signal reference ground?
I am working on a CNC application where one controller board will be sending signals to another board. The environment may have electromagnetic interference (EMI) from nearby motor activity, so these ...
0 votes
1 answer
316 views
How significant is signal noise from a BNC connector?
I'm trying to build a double cross antenna that can be folded/taken apart based on the design of the picture and receive signals from weather satellites. The idea is to make each of the four dipoles ...
2 votes
1 answer
139 views
Active noise cancelling headphones - How fast does a digital signal processor have to be to perfectly cancel out noise with an inverted signal?
How fast does a digital signal processor have to be to perfectly cancel out noise with an inverted signal? Is it possible for a digital signal processor react so fast?
1 vote
1 answer
4k views
How to add a Gaussian noise signal with zero-mean in a given data set?
I have a real-time velocity measurement data set in a excel (.xlsx) file. I want to add the Gaussian noise signal with zero mean in this real-time data to create three set of pseudo measurements. ...
0 votes
1 answer
89 views
Is it possible that room noises could end up on the recording when recording audio from an analogue source?
I have a VCR with a tape cartridge playing in it. The video output (SCART/RCA) goes from the back of the VCR into my Elgato video capturing device's RCA cables. The Elgato device is then connected via ...
0 votes
0 answers
75 views
How can I find the Transfer Function in Z-domain?
This is my signal; $y[n]=x[n]+0.8x[n-0.2]$ When I take Z-transform I get; $Y[z]=X[z]+0.8z^\frac{-1}{5}X[z])$ Then I found the Transfer function as; $H[z]=\frac{Y[z]}{X[z]}$ $H[z]=1+0.8z^\frac{-1}{5}$ ...
0 votes
2 answers
171 views
Are there offsets in these accelerometers signals?
How you can see in the picture below, there are 3 signals from 3 piezo accelerometers placed on a oscillating 3D structure. The structure should vibrate only along the z axis (blue track), but there ...
1 vote
1 answer
65 views
Quickly stopping a phone from attaching to a network
I struggled for a while to find which group I might ask this question in. Figured engineering minds would be the best. Some time ago I discovered a good friend was in an abusive relationship. This ...
0 votes
0 answers
57 views
Can cross correlation be used to see if filtering of a signal has changed it too much?
I am filtering a signal, and want to check if I am not over filtering it , I wanted to use cross correlation , but I am not sure if it is a good technique. usually I get something like the following ...