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## Matlab S Function |

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1000 Threads found on edaboard.com: **Matlab S Function**

Hi, Iam new here. i need to draw a triangle (could say random triangle) using M-file **function**. I need to determine 3 lengths and make sure it creates a triangle.
* Sum of 3 angles = 180 degree
or
* Sum of 2 lengths is greater than the third's
Can anyone help pls?

Elementary Electronic Questions :: 04-25-2011 10:05 :: P1a2u3l4 :: Replies: **0** :: Views: **2225**

Q: Write a **function** "xr = sreal(x)" which returns a symbolic expression representing the real (of "ireal(x)" for imaginary) part of x(t). (e.g. x(t) = exp(i*t) + exp(2*i*t)), any clues??
The real and imag **function**s don't return anything useful.
Having crazy problems with this :S
Any/All help well appreciated.

Mathematics and Physics :: 04-19-2011 17:50 :: juvan :: Replies: **0** :: Views: **1112**

hello every body. want to use dsexample4 **function** in delt asigma toolbox **matlab**.
when i run it i must use compile flattenStruct.c and in compile the error get me
`mexErrMsgTxt' undeclared (first use this **function**)
how can i solve these error?

Digital Signal Processing :: 04-19-2011 17:27 :: t_heidari_elc :: Replies: **0** :: Views: **462**

Hello
I need to compare the(7,4) hamming coded bit error probability with the uncoded bit error probabity and a Q **function**.
The **matlab** code which i have compare the theoretial uncoded ber with hamming (7,4) code
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clear
N = 10^6 ;% number of bits
Eb_N0_dB = ; % multiple Eb/N0 val

Digital communication :: 04-13-2011 17:57 :: Priya1987 :: Replies: **0** :: Views: **3760**

for i=1:2048
temp=dec2hex(i,3);
size(temp)
if(strcmp(temp,addr))
mem(i)=data;
else
mem(i)='000';
end
end
a String data is read in to addr and data and both of length 3......
but it's not working
??? In an assignment A(I) = B, the number of elements in B and
I must be

Digital Signal Processing :: 04-03-2011 02:33 :: blooz :: Replies: **1** :: Views: **922**

hi
does anybody know how to calculate impulse sensitivity **function** (ISF) for ring,current starved ring and differential ring oscillator in **matlab**.
the formula is given in the ieee research paper "A general theory of phase noise in electrical oscillators". formula no. 38. but i dont know how to calculate the output **function** f(x). (...)

Analog Circuit Design :: 04-03-2011 00:30 :: ppat2006 :: Replies: **0** :: Views: **876**

I want to delay a signal by 1/2 sample period in **matlab**, but the delay **function** block in simulink is all for integer delay. Does anybody know how to realize the 1/2 delay?
Thanks!

Digital Signal Processing :: 04-01-2011 20:16 :: taoly :: Replies: **1** :: Views: **1057**

I encounter a tough problem. There is a system which already shown in impulse response. But I need approach it to a transitional IIT (like ARX structure) . How do I do it in **matlab**? any direct command to do it. thanks a lot.

Digital Signal Processing :: 03-28-2011 21:53 :: taylorsu :: Replies: **0** :: Views: **798**

I am reading a text book and I wanted to use **matlab** to get the same answer as they deerived it in the text. The answer that the **matlab** displayed is not the same as the text, please this is the question, my code with result and the expected result from the text. The problem is getting the same Transfer **function** as it is. Note: Also (...)

Digital Signal Processing :: 03-27-2011 18:43 :: oshaye3 :: Replies: **0** :: Views: **535**

hi everyone ,
i am using **matlab** 2009b xilinx 12.1 with system generator
i found one error for using it
undefined **function** or method 'xlgetpath' for input arguments of type 'char'
please help me to set this ,
thankink you

ASIC Design Methodologies and Tools (Digital) :: 03-26-2011 02:31 :: kumarravi0086 :: Replies: **0** :: Views: **2157**

Digital Signal Processing :: 03-25-2011 09:59 :: cancel :: Replies: **3** :: Views: **960**

I am designing a 3-order single loop CT Sigma Delta Modultor with RZ DAC.But how can I get the NTF? I can get the NTF of the SDM with NRZ DAC. Mainly, the transfer **function** of z-domain to s-domain can not be transered using **matlab** command d2c or d2cm.Who can tell me the method? Thanks anyway.

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 03-24-2011 05:34 :: longstar :: Replies: **0** :: Views: **857**

I need to solve a unit commitment and load flow problem using Newton Raphson method which includes a **function** which minimizes the CO2 emmissions. The size of the problem is limited to 30 busses.
I have a set of predefined **function**s one of which solves for the lowest cost. I need to modify it such that it solves for the lowest cumulative CO2 emm

Software Problems, Hints and Reviews :: 03-22-2011 11:24 :: Shan_uoit :: Replies: **0** :: Views: **1504**

hello
i use subs command in my **matlab** programm:
i want to get F in numerical mode,F obtained from integral of f1/f2 in x variable
F=int(f1/f2,x);
I defined all the parameters like f1 and f2 in **matlab** program
but when i use subs command for getting F in numerical mode :
F=subs(F)
it gives me:
80000000/53*x-2189396249847878109458682588450

Elementary Electronic Questions :: 01-27-2011 07:19 :: mina.nms :: Replies: **1** :: Views: **1336**

Dear all,
I am writing a program and I have finished the analogue part and now it is time to convert it to discreet time using appropriate transformation which is bilinear transformation. supposed I want to convert this transfer **function** below to discreet time using bilinear transformation, how can I write it.
H= 1/s^2 + 1.414s+1
p

Digital Signal Processing :: 03-18-2011 14:58 :: oshaye3 :: Replies: **0** :: Views: **1023**

hi.. im designin fir lowpass filter using fdatool... now i got the response n i generated the m file to see my specification which is shown below...
**function** Hd = fir1
%FIR1 Returns a discrete-time filter object.
%
% M-File generated by **matlab**(R) 7.3 and the Signal Processing Toolbox 6.6.
%
% Generated on: 09-Mar-2011 21:56:57
%
% Equ

Digital Signal Processing :: 03-12-2011 20:12 :: digvijay :: Replies: **0** :: Views: **1029**

Hey guys , help me to check this code.. i cant figure out how to make it run .. T.T
Its just to filter out some high frequency in the song file i cut ..
**function** filter_a()
= wavread('cut2');
N = length(song); %length of song is 99093
k=;
f1=k*fs/N;
cf = 2000 ;
n = ;
t = n/cf;
N = length(t);
f = n*cf/N;
hf = [o

Digital Signal Processing :: 03-12-2011 08:51 :: microelectronics :: Replies: **0** :: Views: **1600**

Dear all,
I am trying to arrange this transfer funcion in descending order in order to synchronize with the rest of my code. but it gives me error. look at the results with error. How can I arrange it so that the first order become last TF in the transfer **function** PLEASE SEE BELOW. ANY LOGIC THANKS. I put the code above as well
Code:
den2

Digital Signal Processing :: 03-11-2011 08:16 :: oshaye3 :: Replies: **0** :: Views: **895**

hi
any body knows how to plot impulse senstivity **function**(isf) of 5 stage ring oscillator in **matlab**.
for eg. f=vout=sin(t) for colpitts oscillator so isf=(first derivative of f)/(first derivative square+square of double derivative of f). using his i can plot for colpitt
similarly, f= sin(t)+sin(3t)/3+sin(5t)/5+sin(7t)/7+sin(9t)/9 for

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 03-06-2011 11:26 :: ppat2006 :: Replies: **0** :: Views: **518**

Hello,
Can anybody tell me how to find an ambiguity **function** of an LFM radar pulse using fft? I am trying to form the ambiguity diagram with doppler shift and time delay in the axises. But I need to do it using FFT blocks.
Any help is appreciated!

Digital Signal Processing :: 03-05-2011 03:00 :: hoz :: Replies: **0** :: Views: **2055**

I am creating a gui in **matlab**. How to implement a high pass filter in it?
Can anyone please help me?

Elementary Electronic Questions :: 03-02-2011 02:30 :: anupama385 :: Replies: **7** :: Views: **674**

You can buy color sensor IC's like this one : Color Light Sensor - Avago ADJD-S371-Q999 - SparkFun Electronics
or you can use a camera and process the image using programs alike **matlab** OCTAVE etc..
The simplest method is to use LDRs covered by color filters. This is really cheap but may not be very acc

Microcontrollers :: 02-27-2011 12:37 :: exnol :: Replies: **4** :: Views: **914**

Hi everybody,
I have to save a **matlab** vectror 1x256 in a text file.
I'm trying with save **function**, is this the right way?
thanks

Digital Signal Processing :: 02-22-2011 04:41 :: english_style :: Replies: **1** :: Views: **1194**

Hi i want to that is my attachment is a digital bandpass filter 16hz-3khz.
In my attachment myfilterMain.mdl & myfilter is the analog prototype.
IS myfilter1.mdl is the digital converson of the above Anolog filter????
Please help..
I use "c2d " command to convert transfer **function** from s domain to z domain.

Digital Signal Processing :: 02-20-2011 03:49 :: rabin2801 :: Replies: **0** :: Views: **1121**

First up, that not really a square wave, a square wave should have equal low time as high time, or a least a constant duty cycle.
you wave is low for 30, high for 30 and then low for 40? are you sure this is what you want?
the typical way to generate real square waves is something like:
x = 0:0.1:100;
y = double((mod(x,60) > 30));

Digital Signal Processing :: 02-16-2011 14:44 :: allsey87 :: Replies: **2** :: Views: **9992**

Dear all,
I am trying to find a way calculate my componet values from first order section of my Transfer **function**. How can I manipulate the code in **matlab** to calculate the first order section. I put the code below and the results with error. This is 3rd order. Any response is highly appreciated.
code:
pp1=p{1}(1)/p{1}(3);pp2=p{1}(2)/p{1

Digital Signal Processing :: 02-10-2011 18:27 :: oshaye3 :: Replies: **0** :: Views: **554**

i am workeing on equalization of ofdm.
i created a channel object using rayleighchan() **function** in **matlab** but i dont know how to obtain channel coefficent using above command. plz help

Digital communication :: 02-18-2010 06:10 :: BhaskerGupta :: Replies: **1** :: Views: **1405**

I need help in voice recording and mixing etc using **matlab**. can someone suggest some book or manual for that??

Digital Signal Processing :: 02-03-2011 08:53 :: ahsannaeem23 :: Replies: **1** :: Views: **640**

Hi,
Standard **matlab** calls are by value (not by reference).
But you can get the modified values as ouputs, for instance you can call the "blue" **function** like this:
newValueBlue = blue( oldValueBlue );
and the same for the other **function**s.
Obviously, blue.m must return the new value as output.
Regards
Z

PC Programming and Interfacing :: 02-04-2011 20:09 :: zorro :: Replies: **3** :: Views: **1139**

Thanks for these **matlab** files. I was looking for these files to calculate SNR of my Sigma delta ADC.
When I simulate this file I have an error,
"??? Undefined **function** or method 'calcSNR' for input arguments of type 'double'."
**function** calcSNR is not defined..Can you please help me.
Thank you

Analog Circuit Design :: 01-31-2011 11:28 :: naisare :: Replies: **7** :: Views: **5051**

hELLO.
I am using **matlab** =eig(ww);
its returning expected values as required.
But **matlab** is returning unexpected eignvector(taking unexpected values and relation is true) I do not know how these values are coming or i do not know the **function**.
E.g.
if W=;
>> W=;
>> =eig(W)
Eignvector

Digital Signal Processing :: 01-29-2011 05:36 :: irfan_uet :: Replies: **0** :: Views: **701**

suppose i have transfer **function** TF, input r(s), How to obtain Output C(s)
r(s) = sint
TF = 1/(s+0.5)
How to obtain C(s) using M-file using **matlab**?
here input is time varying one. TF is in S-domain.
please help me out:?
Regards
Anand

PC Programming and Interfacing :: 01-28-2011 09:15 :: kalaianand :: Replies: **2** :: Views: **1348**

I have created a GUI in **matlab** for Amplitude Shift Keying so that it would prompt the user to input the binary bit stream, then it would be able to produce the modulated graph and the bit rate and baudrate below.
I have done three months research on the codes and it is successful; Unfortunately something went wrong when i programmed into the GUI

Digital communication :: 01-23-2011 15:17 :: Siva35 :: Replies: **1** :: Views: **592**

hi,
how to code in **matlab** for marcumq-**function** to find the probability of detection in AWGN?

Digital communication :: 01-14-2011 11:53 :: bam96 :: Replies: **0** :: Views: **719**

i have to design with **matlab** or lab view, i am still in (design ) paper work part,
plz reply ..............,

Digital Signal Processing :: 01-18-2011 03:15 :: rashmi venugopal :: Replies: **3** :: Views: **641**

guyz
i'm using **matlab** to implement SSA data pre-processing on historical rainfall distribution to rescale the "0" value of rainfall...
but the forecast value does not follow the original value
i've already trigger the code but still, the problem remains.
**function** =SCALE_DATA(p,upper)
% p Original time series (column vector fo

Digital Signal Processing :: 01-14-2011 02:38 :: ennonbesh :: Replies: **0** :: Views: **898**

Hi!
I need to realize a time variant filter in simulink/**matlab** and discovered the **function** block "Transfer Fcn Direct Form II Time Varying" which should do the job.
Unfortunately I'm completely lost with z-parameters. Can anybody help me here? I need the coefficients for a band pass at frequency "f0" and +-3db cut off at +-"df".
The (...)

Digital Signal Processing :: 01-12-2011 06:57 :: Sara92 :: Replies: **0** :: Views: **781**

hello to All.
as part of my work i want to add AWGN in my **matlab** program .
it can be easily done by randn **function**.
like this
Noise = ( randn( 1,data ) + j * randn( 1,data) )
but my teacher told me once that multiply it also with
*10.^(SNRdb/20)
to normalize the Energy to 1 !
can any one explain it what is meant by Normalization the ener

Digital Signal Processing :: 12-30-2010 01:47 :: s.asad114 :: Replies: **1** :: Views: **540**

Try the lecture notes here;
MIT OpenCourseWare | Electrical Engineering and Computer Science | 6.094 Introduction to **matlab**, January IAP 2010 | Lecture Notes

Hobby Circuits and Small Projects Problems :: 01-05-2011 14:57 :: eng :: Replies: **3** :: Views: **6068**

hhi everybody
i need to code a simple **function** in **matlab** and i have some problems
the **function** getting 4 variable and supose to plot 4 waves.
if the user press just 2 variables thus the **function** plots 2 waves.
i try to coded its like
**function** present_sig
...
if nargin == 2
plot....... (...)

Digital Signal Processing :: 01-04-2011 03:29 :: itmr :: Replies: **0** :: Views: **553**

I am total beginner using **matlab** so I need some help creating FIR and IIR filters with Mathlab.
I have read audiofile:
x=wavread('C:\Pinkpatka.wav',175142);
and I should filter it with FIR, which have these factors:
I must also filter it with IIR, which have factors b=, a=

Digital Signal Processing :: 12-30-2010 12:45 :: Draculaardi :: Replies: **11** :: Views: **1035**

Hi
i am designing the simulink model of MIMO using multipath releigh channe model...but problem is that when i set the value of intial seed in parameters of multipath releigh fadding channel, it generates the **matlab** error of undefined **function** or variable...
can any one help me???
can anyone tell me how to set these parameters in multipath relei

Digital communication :: 12-27-2010 01:58 :: wattoo12 :: Replies: **0** :: Views: **626**

Hi,
I am adding strong noise which has zero mean to an OOK modulation. I use for that the **matlab** **function** 'randn'. But after this, I apply a chebyshev 3? order bandpass filter and I don't really know if the output signal would have the same property of zero mean or not?
Thanks in advance

Digital Signal Processing :: 12-26-2010 04:26 :: Xavipersonal :: Replies: **1** :: Views: **720**

HI EVERYBODY
i need to create the **function** x1(t) = / in **matlab**.
i did it by create the suitable time vector and assign the func like this
t = -1 : 0.001 : 1 ;
x1_t = sin(2*50*pi*t.) / pi*t.;
the size of t is 1 2001
and instead of get the same size at x1(t) ' i get that the size of x1(t) is 1 1
i know its sm

Digital Signal Processing :: 12-21-2010 17:18 :: itmr :: Replies: **4** :: Views: **1496**

Hi,
I am new to programming in **matlab**. I was looking to get some heads-up on how I could implement WFQ and Round-Robin Scheduling in **matlab**. Can anyone help me out if there is a toolbox or some **function** to do this?
Would greatly appreciate your help.
Thank you.

Digital communication :: 12-21-2010 14:57 :: dchandra :: Replies: **0** :: Views: **1605**

How to build a hardware to display signal of Flow sensor by microcontroller in PC?
Is the best interface method serial or parallel or USB?
How can we make an XLS file of sampled signal values to be displayed by **matlab** ?

Microcontrollers :: 12-16-2010 14:25 :: dahroug :: Replies: **15** :: Views: **1919**

Friend when there is **function** available in **matlab** for the purpose, why you want to use for loops.
Some special resons ?

PLD, SPLD, GAL, CPLD, FPGA Design :: 12-14-2010 06:25 :: kamranravian :: Replies: **2** :: Views: **432**

Try fdesign.bandpass(spec) **function** in **matlab**.
check this link for more info:
Bandpass filter specification object - **matlab**

Digital Signal Processing :: 12-12-2010 12:45 :: hoz :: Replies: **4** :: Views: **1015**

I do not have **matlab** with me at this moment and cannot check your code but at a first look your code is correct. Now that you have the filter coefficients, you can use the "filter" **function**. This **function** just needs the filter coefficients and the signal in time domain, the output will be your bandpass-ed signal (try the fft before and after (...)

Digital Signal Processing :: 12-08-2010 00:47 :: JoannesPaulus :: Replies: **9** :: Views: **14572**

Hi,
I have a signal witch spectrum (calculated with **matlab** fft) is 70 Hz wide.
But I really need only the first 5 Hz. Is there any way to "concentrate" the fft only on that part of the spectrum? In this way (maybe) I can use the 1024 fft points only in the first 5 Hz, instead of 70 Hz, increasing a lot the resolution..
Thanks,
bye,
Vale

Digital Signal Processing :: 12-04-2010 06:02 :: vaka85 :: Replies: **5** :: Views: **2052**

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