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A Quadrature Signals Tutorial: Complex, But Not Complicated

Understanding the 'Phasing Method' of Single Sideband Demodulation

Complex Digital Signal Processing in Telecommunications

Introduction to Sound Processing

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Introduction of C Programming for DSP Applications

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Discussion Groups > Comp.DSP

Comp.dsp is a worldwide Usenet news group that is used to discuss various aspects of digital signal processing.

There are 17412 threads in our archives.

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The threads with the newest articles are listed first.

Math History [21 articles]

Tim Wescott - 2014-10-24 03:17:00
Who was it who figured out that integral 1/(x^2 + 1) = arctan x ? And how long did it take them before they published, and did their colleagues think they were nutso at first? It's been ...Math History

Calculating magnitude of FFT result [13 articles]

Robd - 2014-10-23 18:49:00
Hi, I hope this is the correct forum for such a question. I am writing some DSP code that runs on a 32 bit CPU for the purpose of analysing vibration in a machine. I am acquiring samples from an ac...Calculating magnitude of FFT result

Linear phase vs Min. Phase [31 articles]

Max - 2014-10-23 15:31:00
I noticed a post about 'pre-ring' here recently (couldn't find the thread again), and I'm trying to follow up to figure the implications to audio systems. Web searches turn up conflicting info regar...Linear phase vs Min. Phase

Anybody know about sound propagation in water? (sonar) [6 articles]

2014-10-22 11:16:00
If you were to drop a liquid contaminant into the water, would the sound refract due to the difference in speed in the new medium? ...Anybody know about sound propagation in water? (sonar)

Interpretting and using FFT outputs [6 articles]

rwjones - 2014-10-22 00:28:00
Total newbie question... I am working with a data set containing about 150,000 observations of pupil diameter over a continuous time period, sampled at 60Hz. The data appear quite noisy, and the...Interpretting and using FFT outputs

linear system linear? [10 articles]

Peter Mairhofer - 2014-10-20 17:51:00
Supposedly simple questions: Is every "linear system" under all conditions linear? Of course, what is the precice definition of "linear system"? Is it only the homogenous solution or homogenous+p...linear system linear?

ANN: HpW-Works Spectrum Analyzer & Wave Generator V3.4.1

HpW-Works - 2014-10-19 10:01:00
HpW-Works Version 3.4.1: Supported MS Windows versions: - MS Windows Vista, 32 & 64 bit with WoW64 mode enabled - MS Windows 7, 32 & 64 bit with WoW64 mode enabled - MS Windows 8, 32 & 64 bi...ANN: HpW-Works Spectrum Analyzer & Wave Generator  V3.4.1

Stolen from another group [37 articles]

2014-10-18 16:12:00
Thought you may like it Some scientists are actually attempting to determine whether reality is a c= omputer simulation by looking for certain clues. I don't know if anybody el= se has thought of...Stolen from another group

Filtering for a Inverter PWM Driver [10 articles]

Anand P. Paralkar - 2014-10-17 11:18:00
Hi, I am referring to two app. notes from Microchip - 1. PICREF-1 2. AN1279 These app.notes deal with making a Un-interruptible Power Supply. I see that both these app. notes use a ...Filtering for a Inverter PWM Driver

carrier detection [9 articles]

Lanarcam - 2014-10-17 05:51:00
I am not an expert in DSP, in fact I know some of the theory but I have never really written a DSP program. I must write one in order to detect the presence of a carrier signal (either 2222Hz or ...carrier detection
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