## Forums comp.dsp

## Decorrelation

inI've got a nice real-world problem that I've reduced down to the following homework-y sounding problem: Given a system h, I give it an...

I've got a nice real-world problem that I've reduced down to the following homework-y sounding problem: Given a system h, I give it an excitation x in sampled time, and I get back r(k) = h(x(k) + n1(k)) + n2(k) where r(k) is a known received signal, x(k) is a presumed input signal, and n1(k) and n2(k) are unknown noise. I'm taking a repeated signal for both x and r and averaging ...

## Dual estimation issues using Kalman filters

inHi! I intent to play around with rotation rate and accelerometer sensors for a hobby project. The goal is to have a good estimate of...

Hi! I intent to play around with rotation rate and accelerometer sensors for a hobby project. The goal is to have a good estimate of where up/down is in the device coordinate system and to separate the gravitational part from the motion part of the accelerometer measurements. The first approach would simply be to integrate the rotation rates to keep track of a rotation that maps device ...

## Does it benefit to have "arbitrary frequency response" interpolated, rather than as "direct points"?

inSo I'm trying to design arbitrary frequency response filter by following this: http://www.dspguide.com/ch17/1.htm there it displays one...

So I'm trying to design arbitrary frequency response filter by following this: http://www.dspguide.com/ch17/1.htm there it displays one desired arbitrary frequency response: http://www.dspguide.com/graphics/F_17_1.gif which shows to be made of some sort of different interpolation algorithms applied to certain intervals. Is this (interpolated "desired response") necessary or recommended ...

## Why not just make FIRs by hand?

inI'm looking to use the overlap-add FFT technique for doing FIR filtering and many of the examples I've seen use some more known FIR design...

I'm looking to use the overlap-add FFT technique for doing FIR filtering and many of the examples I've seen use some more known FIR design method such as the window method for designing the FIR that will be convolved with the input. However, To me it seems like in the overlap-add FFT technique it should be possible to define the FIR by hand by simply drawing the frequency response as values ...

## Time-varying overlap-add FFT filtering?

inI'm thinking of trialing with overlap-add FFT filtering, but rather than ha= ving a static filter (the filter stays the same after the design)...

I'm thinking of trialing with overlap-add FFT filtering, but rather than ha= ving a static filter (the filter stays the same after the design) I'd like = to implement a time-varying overlap-add FFT filter. So that I can modify th= e gain and frequency characteristics of the filter perhaps in an "adaptive"= way over time. However, my question regarding this is how can I get smooth adjustmen...

## Computer made with a zilog chip

inI am going to make a computer or at least attempt to using some CPU chips and breadboards. The initial idea is to link each output pin such...

I am going to make a computer or at least attempt to using some CPU chips and breadboards. The initial idea is to link each output pin such as halt to a led light.And the address buses too and link the inputs to switches.It will be a very basic CPU unit. What are your thoughts on this? -- ----Android NewsGroup Reader---- http://usenet.sinaapp.com/

## What does it mean to convert frequency domain into rectangular form?

inHere: http://www.dspguide.com/ch17/1.htm A description on creating arbitrary magnitude response filter using iFFT is given. There it's also...

Here: http://www.dspguide.com/ch17/1.htm A description on creating arbitrary magnitude response filter using iFFT is given. There it's also said that: "The next step is to take the Inverse DFT to move the filter into the time domain. The quickest way to do this is to convert the frequency domain to rectangular form, and then use the Inverse FFT." What does it mean to convert the frequ...

## What does it mean to convert frequency domain into rectangular form?

inHere: http://www.dspguide.com/ch17/1.htm A description on creating arbitrary magnitude response filter using iFFT is given. There it's also...

Here: http://www.dspguide.com/ch17/1.htm A description on creating arbitrary magnitude response filter using iFFT is given. There it's also said that: "The next step is to take the Inverse DFT to move the filter into the time domain. The quickest way to do this is to convert the frequency domain to rectangular form, and then use the Inverse FFT." What does it mean to convert the frequ...

## selective fft

inwhich is the best fft method if want the spectrum only for a selective set of points, say only 10-20% of the points in the entire spectrum. amar

which is the best fft method if want the spectrum only for a selective set of points, say only 10-20% of the points in the entire spectrum. amar

## OT: Calculators

inI discovered this when solving one of those trivia questions. The question was to find out what 36 divided by 2.(3)+ 4 can't get the...

I discovered this when solving one of those trivia questions. The question was to find out what 36 divided by 2.(3)+ 4 can't get the division symbol on this PC. Correct answer should be to write this as 36/2 X 3 + 4 =58 a computer would interpret it thus. Type that into a calculator and you will get 58 if you type 36 divided by 2X(3) + 4 where it doesn't matter whether th...

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