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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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IIR Filter Design Software

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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 17691 threads in our archives.

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The threads with the newest articles are listed first.

I/Q modulation and phase noise sensitivity [11 articles]
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Peter Mairhofer - 2015-08-04 15:15:00
Hi, I am observing something that is very counter-intuitive to me: I/Q modulation is very susceptible to phase noise? In an experiment I plot "phase noise" vs. "SNR" and see a constant slope o...I/Q modulation and phase noise sensitivity

POTSBAND Design filter [2 articles]
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Biruntha Gnaneswaran - 2015-08-03 21:28:00
Hi, Can anyone give introduction about POTSBAND Design filter? and what the purpose of this filter??? I found matlab code for this filter, function [b,a]=bandfilter(fs, f1, f2) %POTSBAND Design ...POTSBAND Design filter

How to caulate the Frequency Sample Response of IIR Filter? [4 articles]
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cweston - 2015-08-03 17:32:00
This has probably been answered already but how does one the 'DFT' samples of an IIR filter from the 'b' and 'a' coefficients. For a FIR, this is trivial. if b_n are the coefficients which are...How to caulate the Frequency Sample Response of IIR Filter?

Liftering, what is it actually?
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proffy - 2015-08-03 06:43:00
I want to know the physical significance of liftering process. with Ci as ith feature element in the feature vector, the liftering changes Ci as Ci = (1 + (N/2)sin((pi*n)/N))*Ci What is it ...Liftering, what is it actually?

In memoriam - Vladimir Vassilevsky [26 articles]
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Rick Lyons - 2015-08-01 14:42:00
Hi, In the Russian culture it's traditional to formally remember a deceased family member, or friend, 40 days after the day of their passing. Today it's been 40 days since Vladimir Vassilev...In memoriam - Vladimir Vassilevsky

Automatic (no user-parameters) envelope/peak follower [13 articles]
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mavavilj - 2015-07-30 15:36:00
I'm looking for known algorithms that do envelope/peak following with no user-specified attack or release times. Specifically I'm interested in what kind of algorithms something like: http://i.sta...Automatic (no user-parameters) envelope/peak follower

Thoughts on a 'Companion' FIR Filter Design [6 articles]
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cweston - 2015-07-30 12:56:00
I have and interesting design that involves designing two filters that are very related. (I call them companion not to confuse the word with matched) Filter 1 is set by the system. That is H(jw_1) ...Thoughts on a 'Companion' FIR Filter Design

Fire Codes [16 articles]
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Rob Doyle - 2015-07-29 22:37:00
I was studying the schematic of a 1970's era washing machine sized disk drive [1] wondering how it performed ECC. Everything was built out of simple SSI TTL circuitry. The disk controller had a 1...Fire Codes

MATLAB - Digital Filtering in Second Order Sections - Scale Values [8 articles]
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Lightbulb85 - 2015-07-28 07:17:00
Hi Everyone, I am struggling to manually apply the scale values to a digital filter I designed in MATLAB using fdatool. I generated the filter (IIR band stop filter consisting of four second order...MATLAB - Digital Filtering in Second Order Sections - Scale Values

LFCC (Linear Frequency Cepstral Coefficients)
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Biruntha Gnaneswaran - 2015-07-28 01:15:00
It is used to extract the features in audio signal. It has steps Signal Nor= malization, Compute FFT power spectrum, Compute autoregressive model analys= is, Convert LPC to cepstra , Apply DCT and C...LFCC (Linear Frequency Cepstral Coefficients)
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