I have a sampled signal that was HP-filtered before sampling. Is there a way to revert the HP-filtering?

Started by Anonymous in comp.dsp15 hours ago 8 replies

I have a sampled signal that was HP-filtered before sampling. Is there a way to revert the signal back to its pre-HP-filtered state? I know...

I have a sampled signal that was HP-filtered before sampling. Is there a way to revert the signal back to its pre-HP-filtered state? I know it is impossible to restore the DC-component of the signal. But we can assume it is 0V. I MATLAB script to show how the signal x looks HP-filtered: % % Butterworth Highpass filter designed using FDESIGN.HIGHPASS. % All frequency values ar...


Video: DC Motor Basics

Started by Tim Wescott in comp.dsp1 week ago 7 replies

Normally it takes me a while to get a video out. This one came to me and practically pushed it's way out of my brain and into the camera. I...

Normally it takes me a while to get a video out. This one came to me and practically pushed it's way out of my brain and into the camera. I hope y'all like it: https://www.youtube.com/watch?v=E9zM07v1vWk -- Tim Wescott Control systems, embedded software and circuit design I'm looking for work! See my website if you're interested http://www.wescottdesign.com


New Video: Parametric Oscillations

Started by Tim Wescott in comp.dsp1 week ago 9 replies

It's a bit off-topic from the channel, but hopefully fun. https://www.youtube.com/watch?v=gY3ymZC6t9M -- Tim Wescott Wescott Design...

It's a bit off-topic from the channel, but hopefully fun. https://www.youtube.com/watch?v=gY3ymZC6t9M -- Tim Wescott Wescott Design Services http://www.wescottdesign.com I'm looking for work -- see my website!


simple perspective in using floats for recursive moving-average

Started by Randy Yates in comp.dsp2 weeks ago 34 replies

A colleague was explaining that when he tried using floats in a recursive moving-average filter, there was some residual error which wasn't...

A colleague was explaining that when he tried using floats in a recursive moving-average filter, there was some residual error which wasn't present in the standard (non-recursive) moving-average filter. Would it be correct and reasonable to frame the problem like this: In the recursive moving-average implementation, the output y[n - 1] needs to store perfect knowledge of the past N states...


OT: inflation and investments

Started by Randy Yates in comp.dsp2 weeks ago 14 replies

I've been thinking in the back of my mind about inflation and how it possibly affects investment decisions. A basic (yes, very oversimplified)...

I've been thinking in the back of my mind about inflation and how it possibly affects investment decisions. A basic (yes, very oversimplified) scenario is this. Inflation is at 0 percent. I have a loan at 10 percent interest. I have extra money on which I can earn 5 percent interest if invested. Well it seems obvious that we should pay down the loan rather than invest since our money would...


Virtuoso XL not enabled

Started by Anonymous in comp.dsp2 weeks ago

hi, I am new to Cadence Layout, I am getting the problem of Cadence Virtuoso XL. when I try to generate the layout from schematic. the at CIW I...

hi, I am new to Cadence Layout, I am getting the problem of Cadence Virtuoso XL. when I try to generate the layout from schematic. the at CIW I get message "Virtuoso XL not enabled". please help me out. thanks


Nomenclature frustration

Started by Tim Wescott in comp.dsp3 weeks ago

I figured out the answer as I started typing, but I thought I'd share so you could laugh at me. I'm writing code to test FEC algorithms. At...

I figured out the answer as I started typing, but I thought I'd share so you could laugh at me. I'm writing code to test FEC algorithms. At the moment the unit-test code is in a directory called "codingTest" -- but, what to use to test the error correcting code itself? Name collisions are a bitch. (The directory name will change to unitTest, or softwareTest, and there will be an al...


CPU replacement on a MSX II

Started by Vassilios Spiliopoulos in comp.dsp4 weeks ago 13 replies

Hello, I have an msx 2 machine from 1986. I bought new Zilog z80 CPUs that are 10x faster than what the original ones are are I am thinking...

Hello, I have an msx 2 machine from 1986. I bought new Zilog z80 CPUs that are 10x faster than what the original ones are are I am thinking to replace them. What will happen?Some people told me that my computer will become a complete speed demon. I would like your opinion ----Android NewsGroup Reader---- http://usenet.sinaapp.com/


Really good book on coding

Started by Tim Wescott in comp.dsp4 weeks ago 44 replies

Suggestions? I'm looking for something more specific and new than "Error- Correction Coding for Digital Communications" by Clark and Cain. I...

Suggestions? I'm looking for something more specific and new than "Error- Correction Coding for Digital Communications" by Clark and Cain. I was going to ask for a really good book specifically on _Convolutional_ coding, and that's kind of the direction that I'm leaning at the moment, but one book to bring them all and in the darkness bind them would be acceptable. I'm especially int...


5G Channel Models

Started by runinrainy in comp.dsp4 weeks ago 5 replies

Hello, As far as I know the channel standards and physical channel models have not been determined yet for 5G applications. The works in...

Hello, As far as I know the channel standards and physical channel models have not been determined yet for 5G applications. The works in different regions are being made in order to simulate and define the effective channel models in 5G environment. Does anyone know the most candidate for channel modeling? It will most probably be a time-varying channel but is possible that different channel ...


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