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Visualizations of common Newbie problems [20 articles]

In order to improve my DSP foundations and hone my programming skills I've decided to write some programs to visually demonstrate various concepts. I'll start with something simple - linear sup...

IF board for fpga? [7 articles]

Dear All, We have implemented a high speed qpsk demodulator in a FPGA demodulator board. Until now we fed the I and Q inputs from another board by wire. Now we are looking for an IF board that ca...

Fourier Series question [10 articles]

Hi All, I have a fundamental confusion. This relates to Fourier series. Suppose I take a dirac pulse. It will have all the frequencies of the world in equal magnitude. Now suppose I pass it th...

a question about the effect of channel estimation and equalization in ofdm [5 articles]

in OFDM systems, the LS channel estimation result should be H'=P'/P if we compensate the received data symbols with one tap scheme, the equalization result should be D''=D'/H' = P*D'/P'; o...

Check my math? [22 articles]

A sphere is a three dimensional figure enclosed by the locus of all points that are of distance r (called the radius) away from the center point. It has a volume of 4/3 pi r^3 and a surface area ...

Acoustic ULA beamforming [6 articles]

-------------------- DISCLAIMER: Content may contain rubbish intellect/utter stupidity which may cause offence or arouse contempt. Therein discretion is advised. -------------------- Hello, I'...

Ear integration time and [19 articles]

Good evening, reading Julius O'Smith "Spectral audio signal processing" I couldn't understand the following: "FIR filters shorter than the ear's integration time can generally be characterized b...

Forward Backward Filtering FPGA [9 articles]

Hello, I'm trying to implement a backward filter using system generator. So far I've implemented the block diagram for an IIR filter and it is working correctly. Now I want to apply the filter i...

OT: Pan deletes taglines [7 articles]

Not on topic, but meaningful to me: I'm using Pan, I like it a lot. But sometimes it deletes a whole message, leaving me replying to nothing at all. I _think_ that it thinks that it's deletin...

WARNING: Is there a use for ifft(X,M)? [20 articles]

This is a followup to the thread "Why is fft(x,M) useful? http://groups.google.com/group/comp.soft-sys.matlab/ msg/2bacfcce9454065e As long as the N components of the time sampled row vector f...