Forums Search for: Matlab
vector quantization
hello can any one help me on this vector quantization. i am working on a project of designing a vector quantization using matlab by...
hello can any one help me on this vector quantization. i am working on a project of designing a vector quantization using matlab by implementing idea of constructing the decission boundaries and reconstruction levels. does any one have algorithm for construction this. as i am a beginner in matlab this would really help me encouraging to learn matlab tool. thank you
Sound Localization Matlab, Please Help!
inAs part of my college engineering thesis, I have been assigned the task of identifying and locating sounds using MATLAB. So far, all I have is...
As part of my college engineering thesis, I have been assigned the task of identifying and locating sounds using MATLAB. So far, all I have is a two-microphone set-up, which comprises the audio signal for analysis. This is split up into two vectors in matlab, and using the time delay information, I need to be able to locate the sound. I've done a fairly basic frequency analysis just to get some ba...
bch decoding in matlab.
Hi, Can anyone help me how to start with bch decoding in matlab.I,ve dne the encoding part in matlab.Plz help me.
Hi, Can anyone help me how to start with bch decoding in matlab.I,ve dne the encoding part in matlab.Plz help me.
using Line in in Matlab
ini am trying to make a pressure meter. i am using matlab for it. microphone port is already engaged for microphone based pressure sensor. I have...
i am trying to make a pressure meter. i am using matlab for it. microphone port is already engaged for microphone based pressure sensor. I have made a LVDT for sensing the high pressure. I want to connect the output of the LVDT to the line in port of sound card. but I dont know how to access the line in port from matlab. So please help me with the matlab code for accessing the line in port of my s...
Cascaded integrator comb decimation filter
inHI, Im new to DSP. Am now creating the CIC decimator. But my design has an error in the matlab although Hogenauer pruning was use. I works fine...
HI, Im new to DSP. Am now creating the CIC decimator. But my design has an error in the matlab although Hogenauer pruning was use. I works fine for decimation rate 6 and 10, for 3 and 2 have the "noise" occurs.. I dont know which is correct as I comparing VHDL and Matlab. The below is my matlab code: load Pulse100nsSigned.DAT D = 2; % Differential delay R = 2; % Downsampler delayBuffer1 = ...
Wrong results in periodogram code in Matlab
inHi, I am learning about spectral analysis, now I want to solve a periodogram problem in Matlab but I'm getting wrong results, don't...
Hi, I am learning about spectral analysis, now I want to solve a periodogram problem in Matlab but I'm getting wrong results, don't know why. I'm working with an AR random process: x(n)=e(n)+(summation from k=1 to N of) (?_k* x(n?k)) e(n) is a white noise signal and ?_k are five given coefficients I plotted the power spectrum in Matlab for ? from 0 to ?. Then I generated the
How to output a BPSK signal to the Parallel Port in MATLAB?
inHi... I wish to generate a BPSK modulated signal in MATLAB. I found out how to do this, but I dont know how to output this signal to...
Hi... I wish to generate a BPSK modulated signal in MATLAB. I found out how to do this, but I dont know how to output this signal to the parallel port. Is there any MATLAB code for this? Please help as I am kinda new to MATLAB. thanks..
Plotting sampled data in Matlab
inI'm simulating some filter hardware in Modelsim, and need a way to display the output with a virtual anti-alias filter. Is there a Matlab...
I'm simulating some filter hardware in Modelsim, and need a way to display the output with a virtual anti-alias filter. Is there a Matlab facility for this? plot doesn't seem to have any good option for this. I tried interp1, and it's better than nothing, but the highest order interpolator seems to be 4-tap ('spline'). I could do a higher order filter myself, but feel that Matlab probably...
matlab code for ultra wideband
inHi All, I am looking for a matlab code for ultra wideband simulation on matlab. Any code which can generate gaussian and its monocycles will...
Hi All, I am looking for a matlab code for ultra wideband simulation on matlab. Any code which can generate gaussian and its monocycles will be fine. (derivatives) Channel model would be an added plus. Can anyone suggest me, where can I download this ? thanks and regs ashu
Need help about stability of Levinson-Durbin algorithm in Matlab
inHi, expertises, I am programming levinson-durbin algorithm in Matlab and desperately find that it comes out with unstable results, especially...
Hi, expertises, I am programming levinson-durbin algorithm in Matlab and desperately find that it comes out with unstable results, especially for the multivariate case. Is there any standard, stable matlab pragramme about this algorithm available for reference? Thanks a lot.. Ken
autocovariance in matlab
inHi, I have a MATLAB related question. I have a periodic signal loaded into Matlab and i am trying to estimate the Autocovariance of it by using...
Hi, I have a MATLAB related question. I have a periodic signal loaded into Matlab and i am trying to estimate the Autocovariance of it by using the xcov command. This gives me an output that i store as a variable. I'd just like to know if anyone knows why: a) the xcov matrix is twice as long as the original signal and; b) how can i, from the xcov result see the periodicity of the wave...
levinson durbin
inI was trying to implement Linear Predictive Coding in Matlab. The program I wrote for Levinson Algorithm gives same coefficients as Matlab's...
I was trying to implement Linear Predictive Coding in Matlab. The program I wrote for Levinson Algorithm gives same coefficients as Matlab's levinson function. But i found out that Matlab's lpc function gives different set of coefficients. Why is it so? _____________________________ Posted through www.DSPRelated.com
Matlab fft and frequency vector
inHi, I'm kind of newbie with matlab so pleace be patient. =) Well anyway, in one algorithm I'm trying to implement with Matlab I need to divide...
Hi, I'm kind of newbie with matlab so pleace be patient. =) Well anyway, in one algorithm I'm trying to implement with Matlab I need to divide a Fourier transform with i*w (i is imaginary unit and w omega or 2*pi*f). So it's something like this: Fs = 501; %sampling frequency t=[-1:1/Fs:1]; x = cos(2*pi*10*t); Xf = fft(x); f = [-0.5*Fs:Fs/N:0.5*Fs-1/Fs]; frequency vector xt1 =...
Execution times of FFT in MATLAB vs complex FFT in C
inHello, I measured the execution time of a 2^20 point FFT in MATLAB. It takes 703ms do do one 2^20 point complex FFT in MATLAB. If I do a 2^20...
Hello, I measured the execution time of a 2^20 point FFT in MATLAB. It takes 703ms do do one 2^20 point complex FFT in MATLAB. If I do a 2^20 complex FFT in C it takes 3.3 seconds. How come it takes 4 times longer in C compared to in MATLAB? Has anyone compared the Intel Math Kernel Library (MKL) FFT with MATLAB in terms of execution time? Thanks for any replies.
How to load datum produced by Matlab to ccs6000?
inI have designed a fir filter in Matlab,and produced an coefficient array of the filter. I wanted to utilize these coefficients on a 6711DSK...
I have designed a fir filter in Matlab,and produced an coefficient array of the filter. I wanted to utilize these coefficients on a 6711DSK board to do some calculation.But when I loaded these datum,ccs showed the data file made by Matlab couldn't be opened. I don't know why and I am always expecting your answer. 3x
matlab & ccs interfacing
inwe are currently working on echo cancellation using adaptive filtering on dsk 6713. we have implemented fir low pass and high pass filters on...
we are currently working on echo cancellation using adaptive filtering on dsk 6713. we have implemented fir low pass and high pass filters on the board using CCS. we have developed L.M.S algorithm in Matlab(Not the Blockset provided in Help. A new one). we want to download that m file on the board(Portability between Matlab and Code Composer Studio). How ?
IEEE 802.16 OFDM/OFDMA matlab code
inHi, I am looking for a matlab PHY implementation of the IEEE 802.16 based fixed wireless system. I would very much appreciate it if someone...
Hi, I am looking for a matlab PHY implementation of the IEEE 802.16 based fixed wireless system. I would very much appreciate it if someone could point to an online source for the code or directly provide the matlab code. Thanks so much. This message was sent using the Comp.DSP web interface on www.DSPRelated.com
noise removal in Matlab
inHi, I'm currently having trouble removing noise from my recorded signal with Matlab. The recording is a piece of live guitar performance...
Hi, I'm currently having trouble removing noise from my recorded signal with Matlab. The recording is a piece of live guitar performance recorded at a restaurant environment. I'm wondering if anyone of you can give me a hand on how to design a noise removal tool in Matlab? Your advice and help will be highly appreciated!! Regards, Ada _____________________________________ Do you ...
quick matlab question
inhow can one enter a matrix in MATLAB? say I had A = 0 1 -3 -3 how can I do that?? cheers phil
how can one enter a matrix in MATLAB? say I had A = 0 1 -3 -3 how can I do that?? cheers phil
cross correlation implemenation
inFor starters, I hope I'm not off topic. I'm looking for a C/C++ cross correlation implemention. Something akin to matlab xcorr. I'm...
For starters, I hope I'm not off topic. I'm looking for a C/C++ cross correlation implemention. Something akin to matlab xcorr. I'm perusing the matlab source for xcorr and - it's so say the least - intimidating. Trying to convert my matlab source to C++ but would hate to re-invent the wheel if a sound implementation of these exists someplace. Thanks in advance