### Kenneth Hendrickson (@kjh)

Real-time, DSP, Embedded, Parallelism, High Performance Computing, Software Engineer

## Re: introduction to error correcting codes book (including FEC)

http://lmgtfy.com/?q=error+correcting+codes

I meant 1.2 Hz.

## Re: Sampling frequency of slow phenomena to obtain PSDs

The noise you see at about 12 Hz might be from something other than the thermocouple.

## Re: Phase estimation for beamforming

Phase estimation accuracy will mostly depend upon received SNR.To measure the phase in each receiver channel due to each different transmitter channel, you will...

## Re: Lyons needs help with a "Frequency Estimation" paper.

There seems to be something more going in in the summation over k to the large value of N >> L.

## Re: Lyons needs help with a "Frequency Estimation" paper.

I'm not sure how multiplying this by the original spectrum allows us to zoom with more resolution. Seems it would just be a cascade of filters at the original resolution...That...

## Re: Lyons needs help with a "Frequency Estimation" paper.

How did you get the fancy graphics?

## Re: Lyons needs help with a "Frequency Estimation" paper.

For the author's technique to work, N>=L.  Probably N>>L.But your Gwk has N==L.

## Re: Lyons needs help with a "Frequency Estimation" paper.

By algebraic symbol manipulation, I get equation 4 asX(e^{jw}) = 1/N * \sum_{n=0}^{L-1} \sum_{k=0}^{N-1} X_N(k) e^{-j(w-2k/N)n}.The author, however, seems to have...

## Re: Problem of Input voltage for LM4862 audio amplifier

The capacitor is there to block DC but pass audio.  Rf and Ri set the gain.See the note on the schematic: "Refer to the Application Information section for information...

## Re: How does one delay a signal and allow its phase to propagate vs time with a specific slope or rate?

Multiply the delayed samples by a phase ramp.See the properties of the Fourier transform.

## Re: An Oddball Electrical Engineering Question

That sounds correct to a first approximation.

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