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Discussion Groups | TMS320C54x
Technical discussions about the TI C54x DSPs (including the c5401, c5402, c5402a, c5404, c5407, c5409, c5409a, c5410, c5410a, c5416, c5420, c5421, c5441, c549, c5470 and c5471).
Search Results for "fft"
Decimation of frequency (DIF) of FFT C54x
ting80427 - Jul 18 2004
Hi,
I want to perform DIF of FFT with FFT_POINT=256 using C54x DSP
library, however, i notice that all the FFT function it provides are
DIT of FFT, is there any s... 
FFT dedicated for ARBITRARY N samples
zibydsp01 - Jun 24 2004
I would like to use FFT algorithm to my DSP system
(TI TMS320C54), but unfortunately I can not find any
implementation FFT alghoritm for ARBITRARY N samples
(e... optimised fft and ifft code needed [2 Articles]
Murugesa pandian - Jul 5 2006
hi to all c54xians,
i am doing a realtime project in ofdm using c54x.the
processor misses some input samples,because of the
long processing time time codes for fft and ifft,so,i... FFT , IFFT and DSPlib
Curl - Dec 4 2001
Hello ..
I'm not a C programmer, and i have little experience in this langage. I'd
like to ask a question to people who use the dsp library.
To perform an FFT ... want to find location of peak by fft results
mail_sjk - Nov 25 2002
hi
friends
I m having problem with fft..i have to find out the frequency
contained of a given signal(unknown signal).i tried it by finding the
location of... FFT questions! [2 Articles]
jjnews2000 - May 12 2004
Hi,
I need your help about FFT processing. Some questions will surely
appear simple for many of you but please consider I'm not a
specialist.
I receive a ... About FFT ( using dsplib ) [2 Articles]
ykm67111 - Mar 13 2002
I am using TI TMSC5402 DSK and dsplib V2.1 now.
My problem is I can't get the correct FFT values.
But I can't find what is wrong?
I test a 16 point float point da... Large size FFT routine
wei_wen_dai - Dec 28 2002
Hi all,
I am currently looking for a C-callable asm function for FFT. The
number of points is power of 2, ranging from 2 to 4096.
Does anybody know where I ... radix 4 FFT for c54x
jon duncan - Sep 20 2002
does any one have a radix 4 FFT for the c54x..the dsp
lib includes the radix 2 ...
zero filling and windowing will not work for my
application...
I don... spectrum analyzer [2 Articles]
Farayi Zinatsa - Apr 26 2005
hie
i'm developing a spectrum analyser on a tms320c5x using the fft
algorithim.now i'm trying to analyse a frequecy range of around 4khz
thats about 8khz of sampling ra... 4k and 2k real FFT routines for C54X
johnbsampson2003 - Mar 26 2004
Anyone know where I can find 4k and 2k real FFT routines for C54X? I
am willing to pay for them!
John
... Sending a data from a section of memory to D/A
Poorva Bhargava - Dec 25 2000
Hello,
I am using TMS320C542 DSPLus starter kit for a
frequency analysis application.
I am performing fft over an online signal.
My problem is:
(1) I am ab... block floating point real-FFT for C54xx
TAZUKI - Oct 29 2002
Hi Group,
does anyone know about an example for block floating point
implementation of real fft for 54xx?
regards,
T.
... loss of quantization bits when doing FFT and IFFT
ahgu - Oct 6 2003
cbrev(x,x,NX/2);
rfft(x,NX,1);
unpacki(x,NX);
cbrev(x,x,NX/2);
rifft(x,NX,1);
When I get the result back, the data is reduced by a factor of 128. How t... Interpretation of FFT results [2 Articles]
Santosh M Nadig - Jul 13 2001
Hello,
Has anyone used the DSP library provided by TI for performing
N-point real FFT. It says that when the input is in bit-reversed order,
the output of rfft() ... Real FFT [3 Articles]
Andrew B - Oct 30 1999
I have a problem with 'C542 DSKplus' Real FFT example especially
in phase 2 (N complex FFT) during stage 3 thru (LOGN-1) computation.
Here is the code:
-------... FFT [2 Articles]
SACHIN JAIN - Jan 17 2002
hi friends,
i am using dsk5402 and CCS 2.0 for a real time
application and i have to calculate fft.
problem 1:
i write code to configure codec and i used ... Will the new C54x DSPLIB (dec. 99) include 32bits Real FFTs?
- Oct 22 1999
Does anybody know the contents of the new DSPLIB for C54x?.
We have been able to get some routines from this library. This inlcudes
32bits FFT routines.
We hav... problems with fft routines in the dsplib of the dsk 5402
radato1 - Jun 3 2002
hi,
i am implementing a simple program on the dsk 5402, which involves a fourier
transform.
Reading the application notes i have found out that there are some ... Re: how to evaluate RMS value
Joel Ironstone - Aug 23 2002
There are two correct answers to this as I see it. The fist is to look for
TRUE RMS and the second is to look for Sinusoidal RMS.
1: TRUE RMS:
Take an fft, add... real time problem
seba...@seareka.com - Apr 2 2008
Hi everyone,
I am working on DSK5416 and CCS.
I'm doing real-time using DMA and McBSP to communicate with the codec. I'm working with 16 bits words and with DSP/BIOS configurat... Spectral analysis questions
jjnews2000 - Jun 24 2004
Hi everyone,
I've got some questions for you. Please consider i'm not a
specialist and so that some questions may appear very simple for
you.
My aim is to... RFFT from dsplib not working... [4 Articles]
pet_dsp - Oct 5 2004
Hello everybody,
I am wondering if any experts here could help solve
my problems with using rfft (routine from TI's dsplib) on a 5402 DSP.
Here is my scenar... AW: Real FFT for C54x [2 Articles]
Thomas Hupp - Jul 9 1999
Hello Torgeir
TI has a optimized Q31 FFT - but I has not been released yet so you can't find
it on their homepage.
TI has sent me te routine a few weeks ago - ... Problems using Dsplib
Torgeir Jakobsen - Sep 8 1999
Hi
I have a small program where I use some of the functions from the TMS320C54x DSPLIB
version 1.0.
I have a input time series... Using RIFFT and CIFFT [2 Articles]
Guilherme Martinhon - Jun 6 2006
Hello people!
Does someone in this groups use the RIFFT or CIFFT function? I´m using it, but I can´t reach some results. I´m doing a FFT of a real signal (using RFFT) anda aft... problem using cfft_32 on TMS320C5416 [3 Articles]
rabogoss - Feb 24 2005
Hello e'bdy
I'm using the cfft_32 from the dsplib and I don't why it doesn't work
as it should be.
Can anybody help me?
here is the part of my code, I'va ... Real FFT for C54x [2 Articles]
Torgeir Jakobsen - Jul 9 1999
Hi I need an optimized double precision ( fixed point Q31 format ) 1024 point real FFT routine for the TMS320C54x DSP family. The DSPLIB from Texas only contai... Re: problem about dsplib real fft [2 Articles]
Vasudev Nayak - Aug 15 2002
Hi James,
Try using unpacki before calling the cbrev as rifft
takes in real input.
VN
_________________
>
> Message: 2
> Date: Tue, 13 Aug 2002 12:37:56 -... strange CPU error
JimJ...@msn.com - Feb 26 2008
Hello to everyone,
I have created a simple project that samples a sinus wave and then it calculates the FFT of the sampling data. I am using a C54x card but what I describe happ... Pl. Guide me to use Texas DSK 5402 kit. [2 Articles]
suha...@rediffmail.com - Jan 24 2006
I am new to the TEXAS TMS320VC5402 DSK kit. Can someone help me for data acquisition and plot it in FFT form of VIEW command? Also how can I save this data in a file so that I c... Time taken for computation
Poorva Bhargava - Jan 5 2001
Hello all,
Will you pls tell me how the time taken to calculate
an algorithum like fft can be computed using
TMS320C542 Dskplus Starter Kit.
Why using the... v.34 fast techique for training coefs....
jon duncan - Aug 21 2002
I found a tecnique for a training of v.34 modem that
uses radix 2-fft to find coefs then switches to Least
mean square routine...
Does any one know of the type... Any one know how to operate Signal Ranger
asad...@gmail.com - Aug 21 2007
Hi
i ve bought signal ranger board that has C5402 processor in it...kindly any one knows how to operate this board.i have to submitt the assign of takinf FFT of audio signl using ... cbrev [2 Articles]
Sivaram Yadavalli - Jun 6 2003
hi there,
i am rather new to code composer studio V2. i want to calculate the fft
of an array. i saw that there were some C-callable functions in dsplib and tried ... Align data
Guilherme Martinhon - Jun 13 2006
TMS320C54x DSP DevelopersHello people!
Could somebody send me a step-by-step about how to align data to use some functions of DSPlib? If somebody works with the FFT/IFFT functio... Memory alignment [2 Articles]
Curl - Oct 23 2001
Hello ..
I used to program small functions in assembly langage.
But now my project is much more difficult, and i have to program first in C
I'd like to use the... Bit reverse order [3 Articles]
Curl - Oct 30 2001
Hello,
In some applications, like FFT , we have to do bit-reverse order.
I dont understand what "bit-reverse order is".
Can someone explain it to me ? (or give me... execution time [3 Articles]
- Jan 13 2001
Hi All,
Pls let me know how to find the execution time to process an fft algorithm in
TMS320C542 Dskplus Starter Kit.
Thanks and regard
Poorva
---------... training coeffs for v.34 modem
jon duncan - Aug 27 2002
Does any one have a pre-existing code that trains
Coefs using FFT for v.34 modem?
I wrote a radix 2 deciminatin in Time for the
Forward...and the radix 2 decim...