DSP
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normalised cross correlation by FFT On Apr 28, 8:29 pm, "sangthong" <sangthong2...(a)yahoo.com> wrote: Hi, I have a problem of doing normalised cross correlation by FFT, which the result doesn't satisfy with the result from the one from time domain method and I don't know where it goes wrong. From my understanding, this is the cross co... 6 May 2008 23:25
Understanding high speed digitizer parameters Hi all, I'm new to this board and need some steering in the right direction. I've been trying to understand spec sheets for high speed digitizers and had several questions: 1. What does "form factor" tell you? 2. What is the relationship between MSPS (mega samples/s) and bandwidth? For example, I saw one c... 7 May 2008 06:40
Digital FM demodulation Hi all, I have a question, I have a wav.file, which is a FM modulated signal. It has 3 channels. I want to demodulate them, in Signal Processing Toolbox of Matlab. (but just the first and second channel (not the third one)) I used "demod" function, but it functions very bad and the problem is that, i need to... 6 May 2008 23:25
Hardware Required On May 2, 9:09 pm, "ktneale" <kevintne...(a)hotmail.com> wrote: Hi, I was wondering if anyone could tell me what type of DSP i would need for a basic voice recognition system. The system would you a matched filter of 1000 samples and can have a sampling frequency of anywhere from 2200 toi 22050 Hz. Al... 6 May 2008 23:25
Problems with IQMath library Dear Everybody. I'm using CCStudio v3.3 with the DM642 EVM and XDS560R debugger. I coded my algorithm with ANSI c library, But It didn't give me enough performance. So I have been trying to apply IQMath library and found two odd situations. FIRST. when I ran the codes below, iq_c was 0.0001xx. ... 7 May 2008 08:31
A question about using DAT_copy() transfer data between SDRAM and SRAM(L2) On 5ÔÂ4ÈÕ, ÏÂÎç8ʱ45·Ö, rbmm...(a)gmail.com wrote: hi everyone, I have transferred data from SDRAM to SRAM(L2), letting the image processing arithmetic perform in SRAM to improve efficiency of my program and then transfferred data that had been processed from SRAM to SDRAM. When transfer data between SD... 6 May 2008 23:25
Problems with IQMath library Un bel giorno kkadin(a)gmail.com digit�: All calls with individual line below made the system goes down. Have you included the custom .cmd file into your project? IQmath uses some DSP ROM-encoded tables, therefore you need to instruct the linker to put certain sections in specific memory locations. -- embo... 6 May 2008 23:25
Understanding high speed digitizer parameters >3. Does anyone have a link where I can read up on all of this myself? The standard DSP books don't seem too helpful... I would recommend any application notes from companies that design A/D converters. Analog Devices, National Semiconductor, Atmel, Maxim, TI, etc., all have good app notes as I recall. I t... 6 May 2008 23:25 |