## Forums comp.dsp

## Recent thread on RFFT

inI read through part of the recent thread on FFT's for FPGAs. Interestng comments on optimization. Is the real vs complex issue covered in any...

I read through part of the recent thread on FFT's for FPGAs. Interestng comments on optimization. Is the real vs complex issue covered in any notable texts? I would not have thought that it would afford any significant advantage in runtime. I'm not so interested in FPGAs.as in whether there are methods that are generally accepted as close to optimal for a -windowed- FFT/STFT, assuming th...

## Sorry about the many posts

inHi Group I'm sorry about posting all my formulas without any delay. I just wanted to get them out there while they are new, so that...

Hi Group I'm sorry about posting all my formulas without any delay. I just wanted to get them out there while they are new, so that other people can use them if they want. Michael Plet

## EZ KIT LITES USB DRIVER/WINDOWS XP

inHi everybody, I am looking for a EZ KIT LITES USB DRIVER for WINDOWS XP, i am still using windows xp with visual...

Hi everybody, I am looking for a EZ KIT LITES USB DRIVER for WINDOWS XP, i am still using windows xp with visual dsp. --------------------------------------- Posted through http://www.DSPRelated.com

## Plet's Fifth Estimator

Hi Group This is a new estimator based on the magnitudes of three DFT bins. The estimator is exact for a pure sinusoid without noise. It...

Hi Group This is a new estimator based on the magnitudes of three DFT bins. The estimator is exact for a pure sinusoid without noise. It performs well in the presence of noise. Let j be the index of the DFT bin with the largest magnitude. Let k=j-1 and i=j+1. Now let Ck = Cos(2*PI*k/N) Cj = Cos(2*PI*j/N) Ci = Cos(2*PI*i/N) Then the Cosine of the normalised angular frequency can...

## Ooooh, trippy! But I think my house is haunted

inMy wife's been after me for decades to get my hearing tested. I've resisted until now because only old people need hearing aids. Turns out...

My wife's been after me for decades to get my hearing tested. I've resisted until now because only old people need hearing aids. Turns out that I have a hearing loss pattern that's typical of congenital hearing loss. I had thought it was from too many model airplane motors in my youth. On reflection, it's consistent with my Dad's hearing loss, which _he_ attributed to ear surgery whe...

## Plet's Fourth Estimator

Hi Group This is a new estimator based on the imaginary values of three DFT bins. The estimator is exact for a pure sinusoid without...

Hi Group This is a new estimator based on the imaginary values of three DFT bins. The estimator is exact for a pure sinusoid without noise. It performs well in the presence of noise. Let j be the index of the DFT bin with the largest magnitude. Let k=j-1 and i=j+1. Now let Sk = Sin(2*PI*k/N) Ck = Cos(2*PI*k/N) Sj = Sin(2*PI*j/N) Cj = Cos(2*PI*j/N) Si = Sin(2*PI*i/N) Ci = Cos(2...

## Plet's Third Estimator

Hi Group This is a new estimator based on the real values of three DFT bins. The estimator is exact for a pure sinusoid without noise. It...

Hi Group This is a new estimator based on the real values of three DFT bins. The estimator is exact for a pure sinusoid without noise. It performs well in the presence of noise. Let j be the index of the DFT bin with the largest magnitude. Let k=j-1 and i=j+1. Now let Sk = Sin(2*PI*k/N) Ck = Cos(2*PI*k/N) Sj = Sin(2*PI*j/N) Cj = Cos(2*PI*j/N) Si = Sin(2*PI*i/N) Ci = Cos(2*PI*i/...

## Plet's Second Estimator

inHi Group This is a new estimator based on real and imaginary values of two DFT bins. The estimator is exact for a pure sinusoid without...

Hi Group This is a new estimator based on real and imaginary values of two DFT bins. The estimator is exact for a pure sinusoid without noise. It performs well in the presence of noise. Let k be the index of the DFT bin with the largest magnitude. Let j be the index of the DFT bin with the largest magnitude neigboring bin k. That is j=k-1 or j=k+1. Now let Sk = Sin(2*PI*k/N) Ck ...

## Searching for fixed point g.728 sources

inI am searching for a Fixed Point C implementation of G.728 codec. Can anyone point me to it's free version or sell it to me? Thanks.

I am searching for a Fixed Point C implementation of G.728 codec. Can anyone point me to it's free version or sell it to me? Thanks.

## New frequency estimator from two DFT bins

inHi Group I have derived this estimator. The limited tests I have done shows high accuracy. Let k be the index of the DFT bin with the...

Hi Group I have derived this estimator. The limited tests I have done shows high accuracy. Let k be the index of the DFT bin with the largest magnitude. Let j be the index of the DFT bin with the largest magnitude neigboring bin k. That is j=k-1 or j=k+1. Now let P=Tan(PI*k/N) and Q=Tan(PI*j/N) Then the normalized frequency is estimated by: Freq=(N/PI)*Arctan(Sqr(P*Q*(Im[k]*P...

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