# Questions tagged [signal-processing]

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### 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; $H[z]=\frac{Y[z]}{X[z]}$ $H[z]=1+0.8z^\frac{-1}{5}$ ...
1answer
105 views

### What are the conditions for a signal to be an energy signal and a power signal?

I know how to find the power and the energy of a signal. What I have a problem with is knowing whether a signal is an energy signal or a power signal. According to my teacher, a signal is a power ...
0answers
7 views

### Why is it so hard to find DICOMs with Inversion Times recorded?

I've been searching for MR Images of anything that comes in DICOM format and have Inversion Time. I tried getting the Facebook fastMRI data set, the NIH Visible Human Project and the UTA4 Dataset and ...
0answers
12 views

### How is MRI SNR affected by the frequencies that are included?

So for MRI imaging, if an image is taken, and portions of the Fourier transform image are removed so that some portion of the higher frequencies are not included, would this reduce the SNR? I assume ...
0answers
24 views

### Finding force distribution using accelerometer data

The team I'm currently working for is trying to compare bushings with different durometer ratings in the front suspension using single axis(z) accelerometer data during curb impacts. The current ...
1answer
34 views

### Signal convolution: continuous signals

I really didn't understand how to do it. Please, can anyone help me?? Determine h (t) * x (t) when h (t) and x (t) are the rectangular pulses shown in Fig. A. Plot the result of this convolution. I ...
0answers
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0answers
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### How to take the engineering FFT of Signal in Matlab?

All, The FFT function in matlab gives a theoretical mathematical FFT of the signal, and is not scaled to units and is real imaginary and not amplitude-frequency is there an alternative way of FFT to ...
0answers
26 views

### How does the number of cycles for averaging in a lock-in amplifier relate to low-pass filtering and where do I set it?

Please forgive me if I ask too many questions at once or I am too much of a rookie. I want to understand the working-principle of lock-in amplifiers (LIAs). I understood the calculation that yields ...
1answer
83 views

1answer
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### Are there any methods to work out what appliances are running in my home from an aggregate power consumption sampled 6 times a minute?

I recently got a gizmo installed at home that samples my electricity usage once every 10 seconds. I've become a little transfixed watching the graph update as various appliances in my home turn on and ...
2answers
303 views

### Acoustical Design considerations for Active Noise Cancellation Project for Air vent [closed]

I am working on ''Active noise cancellation for air vent'' project. I am using NI myRIO1900 it has FPGA module(Xylinx Z-7010) , Audio Technica ATR 3350 omni directional microphones and Tevion ...
2answers
506 views

### Does a Faraday cage effectively act as a notch filter?

In reading about Faraday cages, I have found that most "real world" designs incorporate multiple layers of mesh. For example, this article from the National High Magnetic Field Lab discusses several ...
3answers
159 views

### How can I filter out a signal while extracting only the desired one?

I know that my input signal contains a main sinusoidal signal, and I know its frequency but not its amplitude. Until now, I have been successfully using the least-squares method to generate a ...