Hi everyone, Just one little question. I want to plot a signal y (where y is a column of a matrix). The sampling rate was 500Hz Is...

Hi everyone, Just one little question. I want to plot a signal y (where y is a column of a matrix). The sampling rate was 500Hz Is there a way when using the plot command (i.e. plot(y) ) to view the time (x ax) in seconds and not in sampling points? Thank you in advance Christos Katsis

i'm new here, i am doing my university project on speech recognition, if somebody could tell me how to convert recorded speech...

i'm new here, i am doing my university project on speech recognition, if somebody could tell me how to convert recorded speech sampling? i've already try using resample code from matlab, but the result was that the sound of speech file dosen't sound very nice. the code that i use was

Hello, I have a couple of questions regarding control system simulation: -- How could I incorporate different sampling rates...

Hello, I have a couple of questions regarding control system simulation: -- How could I incorporate different sampling rates in a single feedback system using Simulink ? Can simply having different 'sample time' values (relatively prime) in different blocks solves the p

>Hi .... We are developing a nonuniform frequency sampling FIR digital filter (lowpass) with linear phase using Matlab5.3 and DSP...

>Hi .... We are developing a nonuniform frequency sampling FIR digital filter (lowpass) with linear phase using Matlab5.3 and DSP toolbox (I dont remember the version of the DSP), however, We have arrived to a stuck point in the code becouse i am not very pro in Matlab. We have de

hi, i need to plot the bandpass signal sampling waveforms. (something like fig 2.9 ,pg 37 in understanding digital signal...

hi, i need to plot the bandpass signal sampling waveforms. (something like fig 2.9 ,pg 37 in understanding digital signal processing by richard g.lyons) i dunno how to do it.. can anyone help me...

Hi everybody, I'm working on a project on speech recog. How do you record sound in matlab at a sampling freq of 8192Hz. Currently...

Hi everybody, I'm working on a project on speech recog. How do you record sound in matlab at a sampling freq of 8192Hz. Currently i'm using windows sound recorder to record the sound at a sampling freq of 22050 Hz which is too much for me. format conversions leads to inaccurate

hello, i am a new student of dsp. we know for a bandlimited signal,in order to avoid aliasing the samplig rate should be >= 2*...

hello, i am a new student of dsp. we know for a bandlimited signal,in order to avoid aliasing the samplig rate should be >= 2* maxfrequency..... but what should be the sampling rate for a signal whose spectrum is from (10-25)hz (say)... i.e. for a non-baseband signal..

Hi all, I am beginner in digital filter design. Currently, I am designing a bandpass filter cut-off at 500hz and 1.8khz, with...

Hi all, I am beginner in digital filter design. Currently, I am designing a bandpass filter cut-off at 500hz and 1.8khz, with sampling frequency 6k Hz. I use butterworth filter with order 6 according to the specification. However, when I try to plot the signal, there is

Hi! ? am new for matlab and i want to learn how to do sampling with matlab.For example my problem; i take a wav file and read...

Hi! ? am new for matlab and i want to learn how to do sampling with matlab.For example my problem; i take a wav file and read it with u=wavread('b'); now i have to sample it with n=1000 samples.Can anybody help me? Thanks in advance. Sevin? Bayram

Dear all, I am working on the recursive frequency sampling filter design. My confusion is, I read the theory saying that as...

Dear all, I am working on the recursive frequency sampling filter design. My confusion is, I read the theory saying that as it contains the poles.and also exactly pole zero cancellation occurs to give the stability. in case of fir filter using remez or any,

Hi, I have to complete my DSP project "variable rate sampling (audio)" till the 10th of December,2003. I have been instructed that...

Hi, I have to complete my DSP project "variable rate sampling (audio)" till the 10th of December,2003. I have been instructed that I have to take the input directly through mic and process it in MATLAB. I am using MATLAB 6.5 release 13. I know the algorithm and commands for

Dear all, my problem straight away, i am doing recursive frequency sampling filter design, in matlab i design the...

Dear all, my problem straight away, i am doing recursive frequency sampling filter design, in matlab i design the filter coefficients, i gave the format long at the top and received the 15 digits for representation after decimal point. does this give

Hi guys.. Can anyone help me how to spin and de spin the data in matlab and then pass it into a matched filter and down sample...

Hi guys.. Can anyone help me how to spin and de spin the data in matlab and then pass it into a matched filter and down sample it... Actually I got to the point until de-spinning it but don't know how to do the down sampling part... Hoping 2 c any response... Div

I am having some difficulty understanding the sub-nyquist sampling theory. For example: if you have an ADC that can only...

I am having some difficulty understanding the sub-nyquist sampling theory. For example: if you have an ADC that can only operate at 250MHz, then the max bandwidth is 125MHz. However, if I wanted 1000MHz and I want to use the same ADC, the bandwidth would "fold"

Hi, Can anybody help me plot a combined frequency response of 2 filters in Hz? Hk=Hk1.*Hk2; The sampling freq for Hk1 is 96Khz...

Hi, Can anybody help me plot a combined frequency response of 2 filters in Hz? Hk=Hk1.*Hk2; The sampling freq for Hk1 is 96Khz and the sampling freq for Hk2 is 24Khz. figure(1) plot(96e3*w/(2*pi),20*log10(abs(Hk2)),'y'); hold on figure(1) plot(24e3

hi everybody, i am not able to obtain a sampling rate more than 110 kHz using MATLAB or BORLAND C++ 5. If I use more than 1 MHz...

hi everybody, i am not able to obtain a sampling rate more than 110 kHz using MATLAB or BORLAND C++ 5. If I use more than 1 MHz sampling rate, then more and more samples has the same value; getting a random step waveform. If any body knows how to obtain higer sample rates of th

Can anyone direct me to a good reference on learning how Matlab processes data via either the "resample" command or the "interp" command in the...

Can anyone direct me to a good reference on learning how Matlab processes data via either the "resample" command or the "interp" command in the Signal Processign Toolbox? I need to understand what the other parameters in resample do. Context: I am building a simulated WiMAX signal that can be played out of an arbitrary wavefom generator. I have to make a sampling rate up-conversion to allow ...

Dear all, I am a newbie and I have a basic question which I would like to get clarified. My intention is to simulate 802.11a which is based...

Dear all, I am a newbie and I have a basic question which I would like to get clarified. My intention is to simulate 802.11a which is based in OFDM. From the 802.11a standard I know that: -Number of Subcarriers, Nsc = 64 -Sampling Rate, fs = 20e6 sample/sec -BW = 20MHz -Carrier Frequency, fc = 5.25Ghz Now imagine that I have the following multipath channel: taps_delay = [0 10ns 20ns ...

Hi Experts, I use matlab firpmord function http://www.mathworks.com/access/helpdesk/help/toolbox/signal/firpmord.html In help file it give...

Hi Experts, I use matlab firpmord function http://www.mathworks.com/access/helpdesk/help/toolbox/signal/firpmord.html In help file it give the following example: rp = 3; % Passband ripple rs = 40; % Stopband ripple fs = 2000; % Sampling frequency f = [500 600]; % Cutoff frequencies a = [1 0]; % Desired amplitudes % Compute deviations dev = [(10^(...

Hi, I'm having trouble with a homework question. Suppose I'm given a signal x[n], which is obtained by sampling at a frequency of 2kHZ.Using...

Hi, I'm having trouble with a homework question. Suppose I'm given a signal x[n], which is obtained by sampling at a frequency of 2kHZ.Using matlab I plotted its spectrum (vs. frequency) and got the following: http://img141.imageshack.us/my.php?image=dft1cc2.jpg The question is (quote): "Can you retrieve any information about the distribution of frequencies as a function of time?" Wha...