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## Matlab Sampling Frequency |

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1000 Threads found on edaboard.com: **Matlab Sampling Frequency**

Hi all,
I want to design filter to implement on FPGA with a mentioned parameters in subject but when i am starting to design it on **matlab** fdatool, it gives very high order filter result, and when i decrease or set by myself upto 10 order its impulse response is not good as i want.
Any idea will be highly appreciable.
Regards,
Umair

Digital Signal Processing :: 05-18-2014 08:18 :: umaair_653 :: Replies: **2** :: Views: **271**

Hi all,
I have a problem..I have a discrete sine with 20000 sample and with variable **frequency**.
I need to plot this freq sweep, I expect a **frequency** ramp.
How I can do this with **matlab**?
Please someone help me?
Thanks

Software Problems, Hints and Reviews :: 07-28-2009 10:09 :: silverit :: Replies: **2** :: Views: **6861**

Q1 :
sir i want to ask you that if i am using an external ADC which have 400ksps t0 sample the **frequency** of 100khz.
if i applied input of 100khz to ADC which converts into bits and these bits can serialy transmit to **matlab** through pic16fxxx, so it is possible for pic to work as fast to transmit all the bits before taking to next sample duration ti

Microcontrollers :: 05-09-2012 09:38 :: waqassalam :: Replies: **13** :: Views: **870**

Hi,
Can any1 tell me what is **sampling** **frequency** for ADC ? How to determine the **sampling** freqeuncy for the ADC in PIC16F73? Please advice ! Thx ! :D

Electronic Elementary Questions :: 09-26-2004 01:38 :: kseng2002 :: Replies: **2** :: Views: **1944**

What 'll happen if the **sampling** freq is much larger than twice the maximum freq of the signal?

Digital Signal Processing :: 03-01-2005 01:13 :: vinhpq :: Replies: **3** :: Views: **994**

in a input **frequency** of 1Mhz
*nyquist tell that the fmax must be at least x2 the fs
and if i have fs of 1Mhz and must be have a 32 samples that this affect the fmax needed?

Digital Signal Processing :: 08-26-2005 18:34 :: pjames_e :: Replies: **9** :: Views: **892**

I'd like to ask you a question about some dsp
capabilities. In the book "DSP and applications
with the C6713 C6416 DSK" the author says that
the **sampling** frequencies supported by the AIC23
codec are 8, 16, 24, 32, 44.1, 48 and 96 kHz
(using DSK6713_AIC23_FREQ_fsKHZ).
But my GSM modulator design with 271 kb/s rate
with the use of an intermedi

Digital Signal Processing :: 10-27-2005 13:50 :: lincolndsp :: Replies: **6** :: Views: **1238**

Given a signal at a certain **frequency**,
can anyone suggest me how do determine the **sampling** **frequency**?
Must it be lower or upper then the signal **frequency**?
Thanks in advance
Lupin

RF, Microwave, Antennas and Optics :: 07-03-2006 11:20 :: Lupin :: Replies: **3** :: Views: **1842**

In theory we study that 2 samples per cycle in a periodic sine wave are enough to reconstruct it back in Analog form. I wana know what should be the values for **sampling** **frequency** Fs in practical circuits ? Is it taken 2 samples per cycle ? 10 / cycle or what is the deciding factor ??
If by theory 2 samples / cycle are appropriate to represent in

Electronic Elementary Questions :: 07-13-2006 12:19 :: starfish :: Replies: **7** :: Views: **1823**

hi all,
this is my question:
100Hz carrier signal is modulated by another 0-10Hz sine wave. i wanna demodulate that signal but I confuse about **sampling** **frequency**. which one is the correct **sampling** **frequency** for me? 200Hz or 20Hz? and does **sampling** **frequency** depend on modulation technique? (...)

Digital Signal Processing :: 01-27-2007 19:03 :: r2d2droids :: Replies: **3** :: Views: **779**

dear sohiltri
ur statements realy helped me.... i appretiate ur concepts....
now please if u could help in these two QUESTIONS:
1) i want backpropagation algorithm implemented in **matlab**. For the patter recognition.
2) in kaiser or in Equiripple filter , what is the diffreence between small 'n',
and capital" N".
3)

Digital Signal Processing :: 09-04-2007 13:49 :: vjfaisal :: Replies: **13** :: Views: **889**

I use wavelet Transform and decomposed a signal then I use some detail coefficient and reconstruct the signal:
the main signal sample **frequency** is 260Hz
what is the reconstructed signal samplinf **frequency**?
the main signal interval time is 20 second and the **sampling** **frequency** is 260Hz
=wavedec(signal,8,'db4'); (...)

Digital Signal Processing :: 10-04-2007 11:54 :: m_eh_62 :: Replies: **2** :: Views: **1908**

Hi
I am using simulink NCO
I can't find in help or in dialog boxes for the NCO , I can't find how to set the **sampling** **frequency** Fs for the NCO
Do you know How to set it?
Salam
Hossam Alzomor
www(.)i-g(.)org
Added after 1 hours 26 minutes:
Hi
I have discovered it.
In the function block param

Digital Signal Processing :: 04-10-2008 08:15 :: alzomor :: Replies: **0** :: Views: **1368**

Miguel Gaspar
please tell me how i can define time period of a bit and
please tell me how i can sample a data using **matlab**

Electronic Elementary Questions :: 11-08-2009 20:35 :: Mynul :: Replies: **10** :: Views: **2585**

What is the difference of Cutoff **frequency** and **sampling** **frequency** when it comes to sensor Input?

Professional Hardware and Electronics Design :: 04-15-2009 01:58 :: jpmanicdao :: Replies: **3** :: Views: **4994**

hello
How to find the **sampling** **frequency** Fs from a given wave or signal??
thanx
Regards
Adnan

Digital Signal Processing :: 10-25-2009 07:17 :: ednan :: Replies: **4** :: Views: **4206**

Hi Gents,
I have a question that might appear stupid to you experts.... Is there any relationship between ADC input voltage range and its **sampling** **frequency**?
Could you please advice some references? Thanks.
Nass

Analog IC Design and Layout :: 12-29-2009 08:41 :: Nassou :: Replies: **2** :: Views: **1110**

Hello , i'm newbie here :D .
Just a simple question , is there a relation between **sampling** **frequency** and quantization ?
I implement a quantization script under **matlab** 7.0.14 for quantizating signals.
Theorically the quantized signal must be like stairs , not a line !
These are my results :
For fs(**frequency** (...)

Digital Signal Processing :: 02-05-2010 05:39 :: papriko :: Replies: **7** :: Views: **1993**

Hi all
What is the relationship between "**sampling** **frequency**" and "quantization noise" in audio signals?

Digital Signal Processing :: 03-05-2010 04:31 :: meher81 :: Replies: **0** :: Views: **758**

I would like to design a IIR filter that can deal with variable **sampling** **frequency**. Another way to say, the number of coefficient is changing and value is is different in real time. Is there any good book or article abt it?
Besides how to design a efficient IIR filter in FPGA?
thanks

Digital Signal Processing :: 04-08-2010 09:13 :: woeichee :: Replies: **0** :: Views: **617**

hello...
TO sample the signal such a rate so that we can reconstruct the signal...we all know that the minimum **sampling** **frequency** we have to use is 2*F. where(f=signal **frequency**) but i want to know the how can i decide the **sampling** **frequency** so that i can get the peak value for all the signal.
so i (...)

Analog Circuit Design :: 08-17-2010 01:58 :: bhoomi_shah2906 :: Replies: **4** :: Views: **1292**

Hi guys, I have this question, I know in OFDM system, when you upconvert the signal with certain carrier **frequency** with certain **sampling** **frequency** and when you downconvert it, if the carrier **frequency** is same, but the **sampling** is not, then you will have a **sampling** **frequency** (...)

Digital communication :: 03-14-2011 10:26 :: thavamaran :: Replies: **1** :: Views: **445**

hello friends,
a signal is periodic with period T and number of samples in one period is N then what is **sampling** **frequency** and how to calculate this.
thanks n regards

Electronic Elementary Questions :: 06-07-2011 13:43 :: anshu_neha :: Replies: **4** :: Views: **480**

hi there ... I am working on EEG signals .. And sampled it using ADC0804...
As I read in the forums here that :
" Theoretically (Nyqist theorem) the cutoff **frequency** of the anti-aliasing filter should be 1/2 of the **sampling** **frequency**. In practice the cutoff **frequency** should be even smaller; it depends (among other (...)

Digital Signal Processing :: 07-05-2011 11:27 :: illegal121 :: Replies: **2** :: Views: **566**

Hi all, i have a quick question concerining **sampling** frequencies. I have the ADC of my microcontroller set up with the maximum **sampling** **frequency** of 15 kHz but the programme uses timer interrupts to fill an array with ADC values at a rate of around 2 kHz.
My question is if i were to design an anti aliasing filter for the system would i (...)

Microcontrollers :: 09-29-2011 13:55 :: PlayaSlaya69 :: Replies: **2** :: Views: **455**

Hi.
I read a document about algorithmic adc and at the end of that paper the auther says that "to achive 10MS/s we must design an opamp with 250MHz bandwith to achive desired settling time"
So I want to know that what's relation between settling time and **sampling** **frequency**?
Thank you so much.
Have a good time.

Analog IC Design and Layout :: 04-04-2012 09:48 :: A.jafari :: Replies: **1** :: Views: **508**

My question is :
What should be **sampling** **frequency** of such signal : s(t) = \frac{ \sin( t \cdot 20000 \cdot \pi) }{ t \cdot \pi }?
I know about Nyquist?Shannon **sampling** theorem, but what is the **frequency** of my signal ( this isn't just sinc(20000 \cdot \pi \cdot t) )
Pleas give me some clues :)

Digital Signal Processing :: 08-21-2012 10:29 :: Ryuuku :: Replies: **4** :: Views: **318**

I read that the **sampling** **frequency** should not be the integral multiple of signal **frequency**...i want to know the theory behind this..if there is any document explaining this will be great help...thanks in advance..

Digital Signal Processing :: 01-18-2013 02:04 :: rayan123 :: Replies: **2** :: Views: **238**

Hello.
To give some more information on what I am to use this for: I have two signals. Both are periodic sine waves with the same **frequency**, but with a constant phase difference. Let's call one of the signals for ref (reference) and the other sig (signal). They can look like this:
ref(t) = sin(2*pi*f*t)
sig(t) = sin(2*pi*f*t + θ)
w

Digital Signal Processing :: 02-19-2013 08:38 :: Phataas :: Replies: **0** :: Views: **316**

91903
I want to determine the system clock **frequency** under which my Fpga program is working.
I assume the bandwidth = subcarrier number * subcarrier space, and the subcarrier numuber equals the ifft number
so the bandwidth = ifft number * subcarrier space, 7.68MHZ = 512 * 15KHZ. bandwidth = 7.68MHZ.
And in the p

Digital Signal Processing :: 06-02-2013 22:19 :: naught :: Replies: **4** :: Views: **558**

I want to know the relation between **sampling** **frequency** (Hz) and **sampling** rate (sample per second).
For example, a 1 Hz sin wave sampled at 8000 samples per second. Each cycle of the 1Hz tone will span all 8000 samples (since its period is 1 second). Thus **sampling** period will be 1/ (8000-1) s
Or **sampling** (...)

Analog Circuit Design :: 06-29-2013 12:09 :: Osawa_Odessa :: Replies: **13** :: Views: **3555**

Hi, could anyone help me. I need to determine **sampling** **frequency** for a system including many bands simultaneously. Here are bands with their center **frequency** and bandwidth. fc1= 117.18MHz and BW = 10MHz; fc2=168.33MHz and BW=20MHz; fc3=66.03MHz and BW=25MHz; fc4 = 106.72MHz and BW= 25MHz. I got stuck here, don't know what (...)

Analog Circuit Design :: 07-06-2013 20:21 :: Osawa_Odessa :: Replies: **15** :: Views: **401**

Hi, I need to choose ADC to sample these IF bands with their bandwidth respectively.
Could you suggest me some type of ADC that is good for this application?
I mean what type of ADC that I should use: Pipelined ADCs, Flash ADCs, Time-interleaved / parallel converter, Delta-Sigma A/D,...
What **sampling** frequencies I can use?
Thanks for help.
[IM

Analog Circuit Design :: 07-08-2013 07:05 :: Osawa_Odessa :: Replies: **6** :: Views: **292**

Hi all,
1) I have Fosc=60Mhz which results to Fcyc=15MHz
2) I set ADCON2=0 ,ADCON3=0
from this information i want to calculate my **sampling** **frequency**. how can i calc that? i've checked the datasheet of dspic30F family but i don't understand how to go about calculating it.

Hobby Circuits and Small Projects Problems :: 10-23-2013 09:27 :: P.Copper :: Replies: **3** :: Views: **387**

Dear all
I have the Spectrum of a base band signal as attached figure
Now i want to know what is the **sampling** **frequency** of the ADC to be used
As I understand that to follow Nyquist Therom i need to sample at-least at double the highest **frequency**
But in the Digital board we have the ADC which samples at 2.568 GSPS and the modem (...)

Digital Signal Processing :: 11-13-2013 05:32 :: kalyansrinivasm :: Replies: **2** :: Views: **264**

i am having trouble understanding the ADC module of PIC18F4550
i have configured it as follows
clock 20MHz
PLL prescaler divide by 5
System post scaler
96Mhz/6
Hence my Fosc = 16MHz
now i selected Tad = 16Tosc(101)
also Tacq = 4Tad
hence by adding above two i will get 5us which means **sampling** **frequency** is 200KHz?????
and if my

Microcontrollers :: 03-07-2014 11:10 :: patelvivekv1993 :: Replies: **2** :: Views: **539**

Perhaps you could answer a few questions...
> I am generating UWB signal of 2GHz with **matlab** **sampling** **frequency**(for >resolution) of 8GHz.Thus, each UWB pulse has 4 sample values.
>Now the number of samples in the received signal are 800.
>I do compressed sensing with Phi=randn(400,800)
So is it correct that you generate samples (...)

Digital communication :: 12-26-2009 04:19 :: bulx :: Replies: **2** :: Views: **1250**

Dont implement passband simulation of such a high **frequency**.
I think it is a solver problem (menu Simulation - Configuration parameters). The internal default **matlab** **sampling** **frequency**.
I placed in an empty model sine wave generator and scope. Set your **frequency** and set the configuration parameter for (...)

Digital communication :: 09-27-2012 05:15 :: Mityan :: Replies: **3** :: Views: **560**

can somebody tell me what should i do for **sampling** discrete time signals in **matlab**

Mathematics and Physics :: 04-12-2004 08:37 :: tavakoli :: Replies: **4** :: Views: **7097**

Hi all,
I am a **matlab** newbie :)
How to get **frequency** spectrum of a vector data? (something like )
I heard FFT is the time-**frequency** fransform. And I tried fft() function in **matlab**.
But it return a complex number. Is it stand for both **frequency** and phase?
Any suggestions will be appreciated!
Best (...)

Electronic Elementary Questions :: 12-24-2005 01:38 :: davyzhu :: Replies: **38** :: Views: **163227**

Hi all,
I'm still rather new to **matlab** and have certain questions to ask. Is it possible to generate a signal at a specific **frequency**? and is it possible to control the power spectral density of the signal?

Digital communication :: 03-12-2006 20:26 :: fabbie :: Replies: **3** :: Views: **2812**

hi everybidy,
i have simulated a code in **matlab** for the demodulation of ofdm signal (dab). In the synchronisation process, i found the clock offset of 13.035 khz in the spectrum after downconversion. i used a nco to remove the **frequency** offset. Now when i differentially decode the symbols, i get 5th and 6th symbols corrupted. I think this can be h

Digital Signal Processing :: 05-12-2006 03:45 :: shameem :: Replies: **0** :: Views: **1456**

I am new to **matlab** and I was trying to code a **sampling** and aliasing example. But I have a few questions:
clc;
clear all;
%A is the amplitude
A=1;
%f is the **frequency**(Hz)
f=100;
T=1/f;
%fs is the **sampling** **frequency**
fs=1000;
%phi is the arbitraty phase,
phi = 2*pi*0.75;
tstart=0; (...)

Digital Signal Processing :: 10-19-2006 07:53 :: leony :: Replies: **1** :: Views: **824**

can u send me ur **matlab** code.
my email chaitubek@yahoo.co.in
thank u,.. plz.. its urgent

Digital Signal Processing :: 11-30-2006 05:12 :: chaitubek :: Replies: **3** :: Views: **1674**

I do not seem to understand how **sampling** affects the **frequency** spectrum. Help me find the **frequency** spectrum before and after **sampling**. How to do it in **matlab**?
I am interested in frequencies from 0~integer***sampling** **frequency**. I want to see how different (...)

Digital Signal Processing :: 06-17-2007 09:08 :: iggyboy :: Replies: **1** :: Views: **1642**

Digital Signal Processing :: 01-02-2010 14:18 :: JoannesPaulus :: Replies: **18** :: Views: **12045**

Hello
I want to use fft in **matlab** to analize some exprimental data saved as an excell file attached here as a doc file.
my code:
A=xlsread('Book.xls'); G=A'; x=G(2, : );
N=length(x);
F=/N;
X = abs(fft(x-mean(x),N))
X = fftshift(X);
plot(F,X)
But it plots a graph with a large 0Hz wrong component, my true f

Digital Signal Processing :: 05-28-2010 09:02 :: roujhan :: Replies: **4** :: Views: **3566**

well in this I disagree, since increasing the **sampling** speed ofcourse helps, e.g. (and can test on **matlab** simply) if 1 Khz signal is sampled using 3 Khz the result is actually almost no use. while increasing the **sampling** rate will increase the quality of signal.
Simply put the more the **sampling** rate, the less is the (...)

Digital Signal Processing :: 12-23-2012 11:59 :: syedshan :: Replies: **30** :: Views: **1139**

hi guys,
when i generate a random data in **matlab** and i want to apply a lowpass filter to these data , how can i identify it's maximum **frequency** in order to determine the **sampling** **frequency** that i will use as an input to my filter
for example :
x=randint(1,10); %%% random bits
a=modem.pskmod(4); %%%% QPSK object (...)

Digital communication :: 06-27-2013 13:07 :: bigstrik :: Replies: **0** :: Views: **213**

Hi,
I understand u have data with 100 samples per second ( assuming dt = 0.01s is the **sampling** interval)
this will give your nyquist **frequency** as fs/2 = 50 Hz, this is important as the cut off **frequency** of your filter is normalized with respect to the nyquist **frequency**.
fc is your cutoff frquency
you need to ge

Digital Signal Processing :: 03-18-2014 04:45 :: deboleena18 :: Replies: **3** :: Views: **271**

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