## Forums More comp.dsp

## Why is this group dead?

inAre the folks losing interest? Is DSP just too easy these days? Are the kids running circles around us? Has most of the interesting stuff...

Are the folks losing interest? Is DSP just too easy these days? Are the kids running circles around us? Has most of the interesting stuff already been explored...ie not much new coming down the pipe? DSP has always been mostly a side thing for me. I have been able to apply it to work a few times. The most recent was I had to make AC power waveforms that swept in frequency. Using s...

## Wiener Filter

...

https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-011-introduction-to-communication-control-and-signal-processing-spring-2010/readings/MIT6_011S10_chap11.pdf I refer to these notes. Ive been using Wiener filters for some time now but it is teh causal version. I am puzzled by the uncausal one because it is unstable. Therefore how do people manage to use it? Is

## DIGITAL SIGNAL PROCESSING Online Course

You are invited to âDIGITAL SIGNAL PROCESSING Online Courseâ Dear researcher; ScienceBeam, which is a forefront technology...

You are invited to âDIGITAL SIGNAL PROCESSING Online Courseâ Dear researcher; ScienceBeam, which is a forefront technology provider of neuroscience applications, would like to take the opportunity to invite you for 10-sessions âDIGITAL SIGNAL PROCESSING Online Courseâ that is going to start on October 18,2020. During this course you will learn:

## Variance of white noise

I was reading Box and Jenkins Time series analysis and noticed that when they calculated power spectrum they had a factor 2 in the numerator -...

I was reading Box and Jenkins Time series analysis and noticed that when they calculated power spectrum they had a factor 2 in the numerator - see http://www.ru.ac.bd/stat/wp-content/uploads/sites/25/2019/03/504_05_Box_Time-Series-Analysis-Forecasting-and-Control-2015.pdf equation (3.1.12). I couldn't figure out where the 2 is coming from but then I wondered if they define noise a

## cetacean communication research

inThe Vancouver Canucks have the orca as their main logo. Unfortunately they recently lost their series against the Vegas Golden Knights. I...

The Vancouver Canucks have the orca as their main logo. Unfortunately they recently lost their series against the Vegas Golden Knights. I think they would have better luck if they donated more (or some?) money in support of the Southern Resident orca pods, maybe including some to me for research into cetacean communication :-) though that would require me to do some work (not that my four ...

## daily puzzle

inA quickie. No diagram, but no need. Given a unit cube, vertices labeled ABCD on the top face, EFGH on the bottom; where A E, B F, ...

A quickie. No diagram, but no need. Given a unit cube, vertices labeled ABCD on the top face, EFGH on the bottom; where A E, B F, etc. Draw diagonals GD and BD, across the appropriate faces. What is the angle GDB? You have two minutes, no calculator, pen and paper only - -- Rich

## FFT Question

inWhy is it that in older textbooks the DFT or FFT is defined as having scaling of (1/N) for direct FFT whereas in newer ones it doesn't? If we take...

Why is it that in older textbooks the DFT or FFT is defined as having scaling of (1/N) for direct FFT whereas in newer ones it doesn't? If we take the DFT of say 1,1,1,1 the answer is 4 but surely an answer of 1 makes more sense as it is the average value. of 4 ones. I know people say - "Oh we can scale it later", but it doesn't make mathematical sense. The other point is that the

## FIR filter design

inI am trying a simple example using frequency sampling. Therefore I have N=16 weights. W=[w0 w1.....w15] and I make then as follows W=[1 1 1 1...

I am trying a simple example using frequency sampling. Therefore I have N=16 weights. W=[w0 w1.....w15] and I make then as follows W=[1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 ] as magnitude and the phase is -k*pi*(n-1)/N where k is from 0 to N/2 giving a frequency sampling complex vector of H=[h0 h1 h2 ....h15] Now according to textbooks I have to have conjugate symmetry but exactly how does t...

## CFP: Special Issue JCR Q2 Entropy journal (IF:2.419). "Artificial Intelligence and Complexity in Art, Music, Games and Design"

Journal: Entropy (ISSN 1099-4300), section "Complexity". JCR Journal with Impact factor: 2.419 (Q2). Deadline for manuscript submissions: 30...

Journal: Entropy (ISSN 1099-4300), section "Complexity". JCR Journal with Impact factor: 2.419 (Q2). Deadline for manuscript submissions: 30 September 2020. URL:https://www.mdpi.com/journal/entropy/special_issues/ai_complexity Flyer: https://www.mdpi.com/journal/entropy/special_issue_flyer_pdf/ai_comp= lexity/web Dear colleagues, A major=E2=80=94potentially unachievable=E2=80=94challeng...

## Is fixed point arithmetic important anymore

inDO many people still do DSP in fixed point or are the processors mostly floating point and the DSP designer no longer needs to work in fixed point?

DO many people still do DSP in fixed point or are the processors mostly floating point and the DSP designer no longer needs to work in fixed point?

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