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FFT for DSP563xx: dynamic range   [3 Articles]

Can anyone give me some guidance on the dynamic range of signals that I can process with an FFT on the 563xx? Here's my situation: I have a 24-bit A/D, and I am ...

Request for a FFT module

Hi, everyone. I wish you all happy new year. Recently, I'm working on FFT for speech-recognizer. Since I have hardly had dsp-assembly experience, it's been so ...

FFT 56807   [3 Articles]

Hi, I am really new at programming a DSP, and a simple task is starting to cause me some trouble. I'm using the Motorola 56807 EVM with Cosewarrior and PE. I want to calcul...

codewarrior message for FFT algorithm

Hey gourp, I'm trying to run the FFT.asm that comes with the codewarrior package for Starcore 8101 DSP ( i have the ADS ) and while i run it it gives a message th...

The FFT on a Motorola DSP56824EVM Parallel port board

Hi everyone. I found all the FFT code I need, but I have some question: I'm working with Codewarrior for Motorola DSP, and I found the FFT code on the Motorola...

The FFT Algorithm   [5 Articles]

I need to find the C code for the FFT algorithm. I'm working on "Codewarrior for Motorola DSP". If anyone can help me, I'll really appreciate. Greetings. Jos...

FFT Benchmarks

Does anyone know where to find FFT benchmarks for the Mot DSP's. In particular, I'm looking for the time it takes to execute a 512 or 1024 point real FFT's on a DSP...

FFT, FIR, IIR on starcore 8101

Hi group, I downloded the Filter Library from motorola site and I have all the basic code for Filters, but they have no documentation how to use it. They should h...

Using the IFFT with the SDK libraries

Hi everyone...I'm now trying to use the Inverse FFT on my DSP board. Particulary, a Complex Inverse FFT. I started with a Known Complex vector of 8 elements. I take...

The Codec and the FFT

Hi everyone. Let me going to the point. I'm using the SDK libraries with my codewarrior code. When I use the code, i simply use the "open" funtion. My board (DSP5...

FFT's and signal detection   [3 Articles]

Hello all, I'm currently attempting to detect the level of the 66kHz component of an arbitrary signal using an 56F8323, I was hoping that I could sample the si...

FFT libs

Hi, I'm pretty new to this but please help me out anyways. I'm using the DSP56F827EVM board and I'm having some problems programming an FFT with it. I'm not re...

Re: identifying fundamental frequency

Hi Sean, the regular algorithm to determine discrete frequencies in a spectrum is the Fourier Analysis. For discrete time signal processing this transform is modified to the Dis...

FFT routines for DSP563xx

Is anyone aware of any up-to-date FFT application notes or code from Motorola for the DSP563xx family? The Motorola web site is now almost useless for such things (...

Chirp-Z transform algorithm for 563xx

Has anyone ever ran across a CZT (Chirp-Z Transform) algorithm for a Motorola 56311 (or similar). I am wanting to nest an FFT in the CZT, so that I can narrow the spectrum and dum...

Motorola split56/split563 macros   [2 Articles]

Has anyone successfully used Motorola's split56.asm or split563.asm macros for unscrambling the data after using a N/2-point complex FFT to transform N real data po...

problem with rFFT   [2 Articles]

hi, I want to calculate the harmonics (%) present in the Power system. I want to consider the real part only. I tried using rFFT with three options (DEFAULT, S...

Re: 56800/E Trial

--- In motoroladsp@moto..., "dibosco" wrote: > Codewarrior is bloated (it's simply unbelievable how big it is now); > slow to load; *incredibly* slow at debug...

Squaring , adding, sqrt ing small value ( Frac16 = 90)

hi, after doing the FFT i got my fundmental component as (real = 1200 imag = -1300) and my second harmonic component as (real = -90 and imag = 60). Now i want ...

rFFT results not accurate at variable frequency

Hi, i used rFFT function for calculating power system harmonics but found out that the results were inconsistent. espacially the second harmonic was very high ...

Using SDK'd RFFT and RIFFT for Filtering

Hi Everyone! I am using SDK 2.4.1 with CW 4 on a DSP56F826 platform without external memory. I have written a program that sucks in a 128 sample vector at a sa...

MOTDSP: Anybody actually used Mot C compiler?

Illustrious DSP Group Members: Has anyone actually used the freebie Motorola C compiler that comes with the EVM kits to successfully implement a program on an EV...

Re: fundamental frequency identification

Dear Sean, the maximum and minimum values of the signal can be determined by deriving the signal. Here the zeroes of the derivative give these values. A more simple alternati...

Re: DSP56L811 IO PORTS

Hello In what form do you have this dsp, is it a demo board? I found some datasheets here: http://www.datasheetarchive.com/search.php?search=DSP56L811&sType=part ...

Re: Moving one bss var into .xExt_Ram   [3 Articles]

Team, Whatever way is more correct, I was doing it the way Art suggested except that I didn't have the Mirror. Well, today it's working Arts way and the way I ...

AW: rFFT results not accurate at variable frequency

We have a real-time application where SQRT function is needed; we have a lookup-table based solution with linear interpolation between the table entries. It's not t...

RE: Embedded SDK DSP Function Library Preformance Section

These abbreviations stand for:   AS -> Auto scaling BFP -> Block floating point scaling NS -> No scaling ...

Motorola Expands Portfolio of 16-Bit Flash-Based Hybrid Controllers

The following is a Motorola product announcement containing the press release on additions to the 56800 family. It also contains detailed information on ...

RE: rFFT results not accurate at variable frequency : SQRT function

Hi all, I use the following fast and short code (below) for long square root. Kind regards, Wim de Haan Exendis B.V. W.J. de Haan P.O.box 56,...

Re: need u'r help

Hi, I don't know if I can help you with this. I guess that to calculate the energy of the signal, you need to do some sort of FFT to decompose the incoming sig...