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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

C++ Tutorial

Introduction of C Programming for DSP Applications

Fixed-Point Arithmetic: An Introduction

Cascaded Integrator-Comb (CIC) Filter Introduction

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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 17584 threads in our archives.

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The threads with the newest articles are listed first.

Shameless plug -- control systems talk in San Jose, September 14th-18th [8 articles]
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Tim Wescott - 2015-04-26 17:27:00
In case anyone has been dying to attend one of my talks (or send an associate), I'm now hooked up with a company that presents seminars. Basically, they do all the work that I absolutely dreaded ...Shameless plug -- control systems talk in San Jose, September 14th-18th

Understanding DSP or The Scientist and Engineer's Guide to DSP ? [3 articles]
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rishisoni - 2015-04-26 13:22:00
I'm learning about GNU Radio and software radios in general. However, I just have very rudimentary knowledge about DSP (did a really basic college course) and the mathematics related to it. I picked u...Understanding DSP or The Scientist and Engineer's Guide to DSP ?

I can't tell what this guy is on about. [3 articles]
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Les Cargill - 2015-04-26 10:31:00
http://www.jamminpower.com/PDF/48-bit%20Audio.pdf I suspect he's describing a non-problem, or a problem in pretty extreme corner cases. -- Les Cargill ...I can't tell what this guy is on about.

Low pass filters in the time domain? [22 articles]
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tomb18 - 2015-04-26 09:55:00
Hi, I have an IQ signal that I mix with a complex oscillator to bring signals down to 0 hz. I now need to do a lowpass filter on the signal to remove all other signals before demodulating the signal...Low pass filters in the time domain?

noise reduction with long fft's [6 articles]
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apchar1 - 2015-04-26 08:38:00
There's a statement in Smiths The Scientist and Engineer's Guide to Digital Signal Processing about the effect of fft length on noise. In arguing the virtues of averaging multiple short fft's instead ...noise reduction with long fft's

Joint Kalman Filter vs. Dual Kalman Filter [2 articles]
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Anh Tuan Phan - 2015-04-23 12:11:00
Hello all, Could you please help me to evaluate the advantages and disadvantages of Joint Kalman Filter and Dual Kalman Filter, and a comparison of the two methods. Thank you very much, Anh T...Joint Kalman Filter vs. Dual Kalman Filter

Polynomials - Interesting [12 articles]
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2015-04-22 21:58:00
Here's something you may not know. Suppose you want to expand in a power series a polynomial. Let's take a simple one a0+a1z^-1 Then if you write a lower triangular toeplitz matrix [ a0 0 ...Polynomials - Interesting

Kalman filter to smooth accelerometer signals using rotation matrix [5 articles]
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sia4uin - 2015-04-21 17:27:00
Hello All First post to this group! I have 3D accelerometer signals which are obviously noisy. I want to use Kalman filter to remove the noise. I can also use a moving average filter and it w...Kalman filter to smooth accelerometer signals using rotation matrix

Random Vibration Controller [5 articles]
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smc123 - 2015-04-20 08:21:00
I'm looking for some guidance on how random vibration control is performed. I've read that the reference signal is a PSD (power spectral density) rather than a time domain signal. And that the feedb...Random Vibration Controller

Audio output distorted with any FFT windowing other than rectangular [17 articles]
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tomb18 - 2015-04-19 18:08:00
Hi, For an experiment i have a simple application that takes a quadrature signal from a radio and then does the following: Complex FFT -> Inverse FFT -> Cartesian to Polar -> audio out If I tune...Audio output distorted with any FFT windowing other than rectangular
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