DSP
in [Hardware]
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IEEE Xplore question For those who are IEEE members not at a Uni - do you get full access to Xplore ie the PDF download or are there any restrictions? regards Hardy ... 29 Jun 2010 22:53
Noise Normalisation Hi, I have some problems regarding noise normalisation. I have original signal and I want to add a noise. EbN0db= 0.00; SNRv=10^(EbN0db/10); global sigma; sigma=1/sqrt(SNRv); b=randn(1,1200); gaus=sigma*b; x= round(randn(1,1200)); % my original signal y= gaus % my noise z= x+ gauss % original signal + ... 4 Jul 2010 17:43
Convolution property of DFT Hi, I'm trying fast convolution property but there seems to be some mistake (with the answer). Here is the Matlab code for it, clear all; clc; % Test Vector Convolution a = [1 2 3 4 5]; b = [10 20 30 40 50]; c= conv(a,b) A = [1 2 3 4 5 zeros(1,5)]; B = [10 20 30 40 50 zeros(1,5)]; d= ifft(fft(A) .* f... 30 Jun 2010 16:28
Sigma Delta - Decimation Filter Design I am designing filter to do decimation at the output of a Sigma Delta modulator. Here is the spec - Sampling frequency - Fs - 1.4MHz Decimation factor - D - 100 Input - 3 bits Output resolution - 13 bits. The filter, and the modulator are reset every 100 clock cycles. I tried using a CIC filter, but since ... 30 Jun 2010 17:34
sync filter: Can you help me to set 3 parameter? Hello I'm implementing windowed sync low pass filter on atmega64. I'm sampling at 2.48khz and need to cut off all frequency over 50Hz. Can you help me to set this 3 parameter? Thanks 1)M 2)FC 3)Number of Sample Here the link of source code: http://logix4u.net/DSP/Digital_Filters/Windowed_sinc_filter.htm... 28 Jul 2010 17:21
Fueling your car with natural gas from home Dear Everyone, as you know the price of the Oil is more and more increasing, while the oil supply is decreasing. Moreover Oil is causing wars, terror, oil spills, a lot of greenhouse gases. Do you know that there is plenty of natural gas ? The supply will last for many decades, probably for hundred years. A lot o... 29 Jun 2010 14:03
COMP DSP 2010 presentations The presentation of Rick Lyons "Improving FIR Filter Coefficient Precision" was added: http://www.compdsp.com/presentations/Lyons/Lyons-Precise%20FIR%20Coefficients.pdf COMP.DSP 2010 presentations: http://www.compdsp.com/presentations.htm //----------------- Vladimir Vassilevsky DSP and Mixed Sig... 10 Jul 2010 18:12
Frequency response from Z transform I am trying to plot the frequency response of a system given its transfer function. I know about the freqz function in Matlab. The problem is that my Z transfer function has fractional order term in it. H(z) = (z^-0.5)*(1-z^-1)*(1-z^-1) How do I get the frequency response in Matlab? ... 28 Jun 2010 18:21
Explaining how this filter is working I am building a simple equalizer type audio application and I found following filter online http://musicdsp.org/files/CFxRbjFilter.h The application is working but now I need to modify this filter. I am new to DSP and I have a hard time figuring it out. Can anyone explain how this filter is working? ... 28 Jun 2010 23:49
Indexing base sanity check - (was ... which [was ... which implied ref to ... ;/ On Jun 27, 3:22 pm, Richard Owlett <rowl...(a)pcnetinc.com> wrote: Apologies to those who might think I'm stealing their thread. *CAVEAT LECTOR* Though I've *NEVER* supported myself by any trade normally associated with DSP, my avocations regularly deal with topics covered by this group. I've dealt w... 27 Jun 2010 18:17 |