C6000 Single Core DSP

Browse by Tags

C6000 Single Core DSP

Welcome to the C6000 Single Core DSP Section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "New Post".

Sign In to Post
Tags
You have subscribed to this tag. To view or manage your tag subscriptions, click here.   Close
You have unsubscribed from this tag. To view or manage your tag subscriptions, click here.   Close
You are currently viewing:
FFT
Related Posts

  • Forum Post: Re: FFT problem in 6713

    TKC
    Hi Brad shouldn't the br_table be of sqrt(n) size rather than n? ~Nishank
    on Feb 10, 2009

  • Forum Post: FFT problem in 6713

    TKC
    Hi All, I am using the DSPF_sp_cfftr2_dit() function to calculate 256 point fft followed by DSPF_sp_bitrev_cplx() for bit reversal. /* nFFT=256; workbuf has 512 elements after inserting 0s in the imaginary positions ; twiddle is of length nFFT, bit_rev_table is of length 16 */ DSPF_sp_cfftr2_dit...
    on Feb 6, 2009

  • Forum Post: Re: the program is endless loop ，cannot back

    Joe Coombs
    Lucy, It looks like you're using an FFT function from the C674x DSPLIB . Your usage looks fine to me, so the problem may be elsewhere in the program. While this function should be interrupt tolerant, it's possible that your network activity is causing a problem due to a bug in the DSPLIB function...
    on Oct 30, 2009

  • Forum Post: DSPLIB: DSPF_sp_fftSPxSP radix question

    vikesfan
    I'm looking at the DSPF_sp_fftSPxSP function description in the TMS320C67x DSP Library Programmer's Reference Guide (spru657c). This appears to be a copy of the comments in the DSPF_sp_fftSPxSP.h file from the TMS320C67x DSP Library. There is a section in both that reads: DSPF_sp_fftSPxSP...
    on Mar 31, 2010

  • Forum Post: Computing FFT on C6713

    BAS
    Hi, Referring to given below post, I implement 1024 points FFT for real time sine wave using FFT Code given by Brad Griffis (TI guy). I have some confusion about length of Data and Twiddles factors. http://e2e.ti.com/support/dsp/tms320c6000_high_performance_dsps/f/115/p/12340/48185.aspx#48185...
    on Jul 14, 2010

  • Forum Post: Re: Memory Map Error

    Vivek Hari62528
    Hi Randyp, Thank you so much for the input. Regarding the c6747 starter kit do you mean the OMAP L138 Experimenter like kits? They come with a display as well is it? http://focus.ti.com/docs/toolsw/folders/print/tmdsexpl138.html . If so could you provide any help regarding where I could get info about...
    on Dec 13, 2010

  • Forum Post: Memory Map Error

    Vivek Hari62528
    Hi, I am just trying to implement perform fft of a 32 sample points using the functions from DSP Lib. I am just a beginner and I was trying it out on the code composer studio with a c6713 simulator. I have attached the code I used below. The problem is that during runtime I keep getting this error...
    on Dec 11, 2010

  • Forum Post: DSPF_sp_fftSPxSP function from dsp library suitable for FFT convolution?

    Kee Yong Ting
    Hi, I am about to implement an circular convolution using FFT. After have a glance through DSPF_sp_fftSPxSP function from dsplib, I noticed that this function accepts only floating point format as input , as well as returned value. Since this function do not return complex type of data, I doubt if it...
    on Mar 31, 2011

  • Forum Post: Re: Real Time Problems with high FFTs using EDMA

    Joe Coombs
    Benjamin, I'm not sure I understand your graph; it doesn't look like the typical output of an FFT algorithm to me. Does this show the input data, or are you also calling an IFFT to arrive back in the time domain? I'm also not sure I understand what the different colors mean in the graph...
    on May 4, 2011

  • Forum Post: Re: Real Time Problems with high FFTs using EDMA

    Joe Coombs
    Benjamin, If it gets worse when you move to IRAM, then that may mean your program (or data buffers) won't fit there. I'm a little surprised it even compiled if that's the case. Regardless, you may need to leave everything in external memory, and that makes it more important to make sure...
    on May 5, 2011

  • Forum Post: Real Time Problems with high FFTs using EDMA

    Benjamin Fuchs
    Hello every one, i have a Problem "see Topic"... my Programm works for FFT lenght up to 1024 when i increase the size to 2048,4096,8192.... then i get a realtime Problemm see in Picture for N = 32768 Im using 2 Chanels Left and Right (Stereo). When i use 1 Channel i get no problems...
    on May 4, 2011

  • Forum Post: Re: FFT Peak and Magnitude Problem

    Joe Coombs
    Tariq, Your screenshot looks "almost" correct for a sinusoid input signal. The biggest problem is the spike in the middle of the buffer. I have not seen an artifact like this in my tests. Are you using the source code example from the real FFT wiki page? Based on the screenshot, I am...
    on Aug 3, 2011

  • Forum Post: Re: FFT Peak and Magnitude Problem

    Joe Coombs
    Tariq, I have one comment about the above code. After you calculate a N / 2 point FFT, you should only end up with N / 2 complex values in your output buffer. This means you should only attempt to calculate N / 2 magnitude values. In your code, you appear to be calculating a full N magnitude values...
    on Aug 4, 2011

  • Forum Post: Re: FFT Peak and Magnitude Problem

    Joe Coombs
    Dan, Tariq's usage is correct in this case. He is following a procedure we specified on the wiki to "trick" the FFT algorithm into treating an N-value real sequence as an N / 2-value complex sequence. The resulting length N / 2 FFT represents the frequency content of the original N-value...
    on Aug 5, 2011

  • Forum Post: FFT using tms6713

    Sajith Manikkoth
    Hi, I am unable to find FFT using the following code..I am using TMS6713 ans ccs 3. Please help me in this regard #define CHIP_6713 1 #include "dsk6713.h" #include "stdlib.h" #include "math.h" #include "utility.h" #define PI 3.14159265358979323846...
    on May 12, 2011

  • Forum Post: Why does C6713 run slower than the C31?

    CMA
    Hi, I have to switch to use the new TI DSP chip C6713 because the old C31 is out of production and I can't even find them from surplus stores any more. I'm running the C6713 at 200MHz now, whereas I was running the C31 at just 80MHz before. Nevertheless, I converted my old C31 program...
    on Sep 5, 2011

  • Forum Post: Please recommend an evaluation board

    Yaniv Shaked
    Hi, Can someone please recommend an evaluation board with a DSP, that includes both A/D and D/A (supporting up to 200Ksamples/sec), which also has extensive DSP free libraries support? Thank you in advance! Yaniv
    on Oct 4, 2011

  • Forum Post: FFT interrupt problems on C6713

    JPY
    I am trying to implement a real time FFT/iFFT code on the C6713 DSK. I am a EE student still learning C programming, so there are some aspects of programming I am not too familiar with. I am am using the dsk_app program as a template and adding the FFT function inside the 'processBuffer()' loop...
    on Mar 23, 2012

  • Forum Post: [Peer Review/Sharing Senior Design Project] Acoustic Signal Identification and Direction Finding

    Natt Day
    Greetings all! I don't expect to get much traction with this thread but what the heck! ...some poor soul may find it useful someday. I have successfully implemented (from concept) my senior design project on the C6713 DSK by Spectrum Digital. I couldn't have done it without some of the great...
    on Apr 21, 2012

All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | mobile m.ti.com (Mobile Version)

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2013 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use