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Technical discussion about Matlab and issues related to Digital Signal Processing.
Search Results for "waveform"
generating random waveform with gussian pdf [2 Articles]
altaanah2000 - Dec 19 2006
Good day all,
Want to make a program that generate a random waveform with a Gaussian
pdf of zero mean and 2 Volts rms. Using vector of length 2048 and let
the voltage values i... 
ASK waveform [6 Articles]
joshln - Jan 29 2005
Does any one know how to generate an ASK waveform on MatLab, the
data stream is [11000101].Thanks
... FILTERING - HELP [2 Articles]
camdmag - Oct 20 2003
Hello
I am new to the group and in fact new to signal processing and
filtering and was wondering if anyone could help me with a problem I
have filtering in MAT... FILTERING QUESTION
camdmag - Oct 24 2003
Hello
I am new to the group and in fact new to signal processing and
filtering and was wondering if anyone could help me with a problem I
have filtering in MAT... create a pulse waveform from 200 samples of 1 [6 Articles]
sreejyothi jonnalagadda - Nov 22 2002
hai
I tred to create a pulse waveform from 200 samples
of 1 with this code
samples=sign(randn(200,1));
plot(samples(1:200)).
But i am not getting correct resu... Waveform recovery in qam
Saqib Ali - Jun 28 2004
dear all!
i want to detect the waveform of the signal modulated using qam . The
actual problem for this question lies in the phase recovery of the
carrier at t... Re: Power versus frequency of a sine wave
Nadimul Haque FAISAL - Jul 8 2007
Yah, the y-axis is Power Spectral Density (PSD).
the y-axis values are just a relative thing....the relative value of
different 'frequency band' could be used to identify the '... Power spectral density of jittered SQ waveform [2 Articles]
sudh...@infineon.com - Mar 29 2005
Hi All,
I am trying to plot the power spectral density of a jittered square waveform using psd() command.The program is given below.This seems to work fine but I have probl... Creating I/Q files for a Rohde and Schwarz AMIQ
sys73962 - Feb 13 2009
Good morning all;
Has anyone written anything that creates an I/Q waveform in the format
that the Rohde and Schwarz AMIQ can accept?
If you have some code that would be ver... How to plot a rectangular pulse waveform ? [2 Articles]
math...@hotmail.com - Nov 1 2006
Hi all out there!
I'm a newbie in this Discussion Group and beggining in matlab signal plotting and processing.
So, i need some help:
I want to plot a rectangular pulse with ... generating waveforms [2 Articles]
nobox2003 - May 14 2007
hi guys I'm very new to Matlab and DSP and am in a bit a nitch.I need
to generate waveforms of 512 samples centred on sample 200 andI also
need to normalise the amplitude of e... Need advice on sample rate conversion
sys73962 - Jun 5 2008
I am creating a pseudo WiMAX waveform that can be played as I/Q samples
out of an arb. I've completed the framing structure and populated the
carriers with random data.
I n... Waveform generation
eko suhendro - Sep 4 2009
hi guys I'm very new to Matlab and DSP and am in a bit a nitch.
I need to generate waveforms with sampling rate 256 samples per cycle,
frequency 50 Hz and duration five cycles.
... Decode MSK from .wav file
koen...@gmail.com - Jan 6 2008
Hi all,
I've some MSK-modulated data in a .wav file I would like to decode with Matlab. My idea was to use the wavread() function to load data from the file, and then use mskdem... spectrogram 4 frequencies and amplitudes
mark pxxxxx - Oct 2 2005
Let’s say I have a square wave at a fixed 440 Hz. I
want to use the spectrogram function, or something
else in Matlab, to extract the harmonics of the
waveform in order of... Voice recognition
clarence17 - Aug 19 2002
Hi everyone,
I am working on a voice recognition project. A speaker speakes a few pre-defined
words into the system, and the system matches the audio waveform with ... voice recognition system [2 Articles]
jergang19 - Nov 3 2003
Hi everyone,
I am working on a voice recognition project. A speaker speakes a few
pre-defined
words into the system, and the system matches the audio waveform wit... ?? sample rates more than 100kHz [3 Articles]
ravikiran_dn - Aug 25 2003
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 ... spectral analysis between wav and mp3 decoded wav [3 Articles]
jeff...@hotmail.com - Sep 4 2009
Hello everyone,
Can anyone tell me where have i gone wrong with the following code? It was understood that when u encode a wav file to mp3 and decode it back, there will be more... Wave from matlab to C
Stelios morfo - Sep 9 2003
In a C program I want to read a 16bit wave buffer which is stored in an
mxArray.
I have a problem with type convertion.
For example:
...
double* pr=mxGetPr(my... plotting dsbsc using a carrier and a message
Ashiru Abdul-azeez - Oct 29 2007
Hi guys,
I am new to matlab and am having problem plotting a carrier
signal,multiplting my message signal and carrier signal and plotting
the resulting doublesideband suppress... daq mic calibration
Bagus Tris Atmaja - Apr 4 2009
Hi All,
I have a problem while do my final project research, it's about sound signal processing. I use an array microphone to capture the sounds in dB SPL. My multichannel sound c... training neural network using output signal from filter
Ah_Nee - Mar 13 2005
Dear all,
I am creating a speech recognition system using simulink. I
wish to compare my output signal from my filter in neural network.
What type of i... How to do Amplitude Shift Keying Demodulation
hwcl...@gmail.com - Mar 11 2008
fc=30;
g=[1 1 0 1 0 0 1 1 1 0]; %modulante
n=1;
while n ... Simulation of Cascaded H-bridge inverter in Matlab
tyenfen - Feb 27 2007
Hi all,
I was sucess to simulate the cascaded H-bridge inverter(5 level,which
consists of 2 H-bridge modules) using Simulink in Matlab.Actually I am
doing research in cascaded... mysterious click in audio file [4 Articles]
markpxxxxx - Nov 26 2005
I wrote a Matlab program that generates overlapping timbres. It works fine, except that it
causes a single clicking sound in the audio file and I can't figure out where it is... Re: SNR
Predrag Valozic - Mar 19 2003
Hi Guat-Eng!
SNR is the quality measure for a single but composite waveform.
One part of such a waveform is declared as signal and the rest is
noise. Then, it ... Re: cross correlation and time delay
Jeff Brower - Jul 6 2006
Nikhil-
> I am new to MATLAB and even newer to signal processing. I am doing some
> work
> on Time delay estimation. I have a few questions which I hope some of you
> wou... mapping symbols onto carrier waves? ifft? [2 Articles]
Johnny - Jul 19 2007
so i'm venturing into communications research and i'm stuck on how to
change symbols into the time domain. i have modulated bits, say [0 1]
which in bpsk is just -1 and 1. how do... I need more information about the resample command
sys7...@yahoo.com - Jun 18 2008
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 t... Covolving a signal with channel impulse response ..
rizwan akber - Mar 31 2009
Hi everyone ..
Well I m doing a project on UWB system analysis ..
As i dont know much about matlab .. I need some information ..
I have created a matrix which contains my transm... 802.11b matlab simu: pls comment
Abhishek Mitra - Mar 13 2003
% This Program is (C) of Abhishek Mitra, B.Tech 3rd Yr 2002
% 5.5 Mbps CCK Simulation using specs from IEEE 802.11b, No
guarantees and warantees!
%The first... RE: LFSR flat frequency [3 Articles]
Thomas Patrick - Jan 25 2005
Hello Arun & Valozic,
Thanks guys, your hints helped me to come up with a mathematical model to prove LFSR generate flat spectrum. ... Applying FFT on the data obtained from oscilloscope [3 Articles]
yeok...@ntu.edu.sg - Oct 19 2006
Hi all,
Firstly I would like to apologise if this message appears to be a repost. Anyway I saved data of a sine wave from the Agilent oscilloscope and imported it into MATLAB. I... Re: Phase wrapping when performing FFT...?
Jeff Brower - Aug 15 2006
Alex-
> I've been trying to correct for phase wrapping in my wavefront and I
> understand now why it occurs when I plot say angle(wavefront)...the
> inverse tan function in... Re: pooja, plz help me
Tarang Dadia - May 2 2005
Pooja,
I did not quite understand what you are looking for. What do you mean
by it should be constant when it peaks? You just design a integrator
and how it behaves de... Re: Eb/No, how do I calculate Eb ??
Nandan Das - Jan 28 2008
One way to make sure you are getting things right is to just generate the
transmitted waveform (without adding noise).
Find its energy (make sure you have a large enough number... RE: envelope of a signal
Egler, Mark - Mar 14 2002
I think using the absolute value is better than squaring if you want a
linear estimate of the amplitude envelope. Either way, such a technique is
more like full-wav... help on lpc method
mosol2005 - Jul 29 2009
hi.
frist of all,i'm sorry for my poor english.
i need your help.i;m working on 'formant detection via LPC method'.i've found a site that done this project via matlab.but i want ... Re: 16 QAM in Matlab
Amit Pathania - Apr 2 2008
I see where you are mistaken - though I don't know what you mean by "I will run the program in Vector Signal Analyzer".
1. use qammod (if you don't know matlab coding very ...