tim177's articles:

Items(105) /11 Next >> Last >|

A C++-Language Question (Maybe C, too) 64 17 (4/2/2013 12:01:32 AM) comp.arch.embedded Technically this should be on the C++ language group, but I want an answer, not to either be sneered at or to start a religious war. I think this works the same if it's C, once you take out the C++-isms. ... Tim

Convolutional Codes that guarantee zero AC content 53 15 (3/27/2013 5:38:13 PM) comp.dsp Are there convolutional codes that guarantee an encoded signal with equal numbers of zeros and ones? Are they useful? I'm thinking of a convolutional equivalent to the 8b10b block code used in Ethernet.... Tim

Name this design pattern 5 10 (3/22/2013 5:44:18 PM) comp.arch.embedded I have been finding myself using the same design pattern more and more often lately, and I'm thinking of building a little class to carry around with me and implement it (or, maybe not, 'cause it's so easy)... Tim

PC Data Acquisition 45 14 (3/13/2013 4:44:58 PM) comp.dsp This is slightly OT for all the groups I'm posting to, but something many of you should have done. I have a need to sample one channel of data at between 200 and 2000 samples per second, 12 bits or so, a... Tim

System ID and Numerical Conditioning 8 17 (1/28/2013 5:28:30 PM) comp.dsp Hey all you system ID mavens: Peter Mairhofer's post raised a question that I wanted to ask about on a separate thread. The classic least-squares system ID problem calls for you to solve a big, usuall... Tim

Audio CD Error Correction 20 29 (1/2/2013 8:53:18 PM) comp.dsp I vaguely remember reading a statement about audio CDs, to the effect that the error correction scheme is designed with some sort of magic so that it suffers a certain amount of soft degradation before the ... Tim

PLL Terminology Question 72 58 (10/11/2012 8:36:55 PM) comp.dsp How commonly do you see PLL designs referred to as "type I", "type II", "type III", etc.? Do the terms make sense to you? I'm writing a report; don't want to either baffle with bullshit nor leave out ha... Tim

Matrix Inversion and Processor Loading 8 34 (10/4/2012 10:46:07 PM) comp.dsp Anyone know any handy guides out there to the number of FLOps in a matrix inversion? Particularly for algorithms whose execution times are not data-dependent, or at least have some known maximum number o... Tim

Kalman Filters and Pink Noise 4 37 (8/24/2012 12:10:27 AM) comp.dsp Oddball question. Or maybe just a plea for comments. I'm kind of getting painted into a corner, and the color of the paint is pink. It's looking like I need to estimate pink noise with a Kalman filter.... Tim

[OT] -- Electronic get-well cards 0 58 (8/5/2012 6:57:38 PM) comp.dsp Like the subject line says -- totally off topic. A member of one of my model airplane clubs is in the hospital, and at times like these I always think that passing around a get-well card is a good idea. ... Tim

tim177's replies:

Items(2419) /242 Next >> Last >|

Freqz and fft question 2 13 (4/12/2013 5:12:28 PM) comp.dsp Hi, This is a Matlab specific question. I posted this question on Matlab DSP discussion group, but it never showed up. So, I am asking the question here (I have posted questions on the Matlab group before... rudykeram

Effect of oversampling on SFDR 21 8 (4/13/2013 6:32:58 PM) comp.dsp Hi All My question relates to the effect of oversampling on the SFDR obtained with an ADC. I understand that the SNR of an ADC, considered over a certain bandwidth of interest (BW), can be increased relati... SRB

Noise Cancelling Possibilies for Bandpass Noise? 13 6 (4/18/2013 11:28:58 AM) comp.dsp I have a signal that is the output of a real time system. The system performs 'ok' but has a a problem of what i would reduce down to additive band limited noise. Since I know the source (but cant change i... westocl

LTI vs non-LTI 45 5 (4/28/2013 9:36:30 AM) comp.dsp Sirs, I am going through literature on LTI system and its properties. In order for me to appreciate a little better, can I get some very simple examples of, 1) a non-LTI system that is linear but is t... manishp

Gravity Vector Tracking 38 6 (5/1/2013 7:54:06 PM) comp.dsp Looking for suggestions or pointers on how to track the gravity vector in 6D data. -- Randy Yates Digital Signal Labs http://www.digitalsignallabs.com ... yates9428 (362)

modeling Rayleigh-fading channel in Matlab 5 2 (5/7/2013 6:58:58 PM) comp.dsp Hi experts, I need to Model Rayleigh-fading channel (P channel) in Matlab (two multipaths only). I recall that I read somewhere that it can be modeled as number_of_symbols= 100000x1 channel = abs(ra... mite_learner

Help on FIR decimation 16 1 (5/14/2013 10:40:44 AM) comp.dsp Hi all I have a FIR decimation code, which is meant to decimate audio from 44100 Hz to 11025. My problem is the output is complex, but I need to get this data back to real number, as the complex don't mea... joaoneves

Convolving input samples with a filter 9 1 (5/15/2013 12:36:58 PM) comp.dsp Hi group I am coding a program to do some filtering on an audio file. So using the method described in Steven Smith's excellent book "The Scientist and Engineer's Guide to Digital Signal Processing", I h... me6228 (314)

A purely theoretical question 37 2 (5/16/2013 4:59:48 PM) comp.dsp Hi group I have a purely theoretical question. When doing a FFT of an unwindowed pure sine signal, if the frequency doesn't match a bin frequency, many bins will have a magnitude > 0. Because the magnit... me6228 (314)

Help with IIIR filters 3 0 (5/22/2013 5:04:14 PM) comp.dsp I have a problem understanding IIR filter stability problems. The problem is this; I can't find any stability problems with IIR filters. I have a health problem that prevents me from working, so as a hobby,... FilterDan