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Filter Coefficient Design

Started by ramm...@ymail.com in Analog Devices DSPs14 years ago

hi.... in my previous post i found w0 is not clear sorry so i'm resending my queries again. i'm currently working on Analog Devices Dsp...

hi.... in my previous post i found w0 is not clear sorry so i'm resending my queries again. i'm currently working on Analog Devices Dsp processor ADAU 1701.. Sigma studio is the software we are now on,in that i have some queries in the way they calculate filter coefficient. - main specification i needed to design a filter 1)Type[LPF,HPF, etc] 2)frequency 3)Q 4)Gain eg: I wa...


having problems in taking output of ADC in adspbf537 ezkit lit

Started by alvin p in Analog Devices DSPs14 years ago 1 reply

Hi, I'm plotting the values of the iChannel0LeftIn in the sample audio codec talkthrough but i'm receiving an erroneous output. For example,...

Hi, I'm plotting the values of the iChannel0LeftIn in the sample audio codec talkthrough but i'm receiving an erroneous output. For example, when i input a pure sine wave using an audio generator to the audio-in of the ezkit, the plotted figure in iChannel0LeftIn is not a sine wave. Do any of you guys know why i'm not receiving the output of the adc properly? I'm using... Memory: Blackfin Me...


Problem with ADSP21262 processor

Started by meet...@yahoo.co.in in Analog Devices DSPs14 years ago 2 replies

I have designed a custom board with ADSP21262. Before soldering the processor, I have verified that the core supply(1.2V) and the external...

I have designed a custom board with ADSP21262. Before soldering the processor, I have verified that the core supply(1.2V) and the external supply(3.3V) are fairly isolated. But once the processor is soldered, they are getting shorted. Why this happens? I am giving power from from two different external power supplies. Is it because of the time constraint between turning on of the two supplies? Ple...


Variance Calculation Using Blackfin

Started by Gnanavelu in Analog Devices DSPs14 years ago 3 replies

Hi I am determining the Variance in Blackfin DSP using assembly language. I compared with the c code under following cases 1. 8 samples 2....

Hi I am determining the Variance in Blackfin DSP using assembly language. I compared with the c code under following cases 1. 8 samples 2. 16 samples 3. 32 samples 4. 1024 samples. I got correct result under case 1 and case 2. But i am not getting correct result under case 3 and 4.? C and Assembly codes are below. Also shared at http://www.4shared.com/file/210861924/d79c05b4/Varianc...


Problem with ADSP21262 JTAG Interface

Started by meet...@yahoo.co.in in Analog Devices DSPs14 years ago 3 replies

I have designed a custom board with ADSP21262 processor. The board has a JTAG header. The ICE test passes correctly. But when I try to open the...

I have designed a custom board with ADSP21262 processor. The board has a JTAG header. The ICE test passes correctly. But when I try to open the session, it shows an erroe message. Please help me to solve out the problem..


feedback adaptive active noise control

Started by unbe...@yahoo.com in Analog Devices DSPs14 years ago 1 reply

I am currently working on BF533 EZKIT LITE implementing adaptive feedback system. I am using FXLMS algorithm and the programming style is using...

I am currently working on BF533 EZKIT LITE implementing adaptive feedback system. I am using FXLMS algorithm and the programming style is using double buffering block processing. May I know if it is possible to implement the application using double buffering programming stlye? Is there any existing product using that programming style to implement active noise control? Look forward to an...


Active noise cancellation on blackfin 533

Started by unbe...@yahoo.com in Analog Devices DSPs14 years ago 2 replies

Hi, > > I'm doing a project to do 'real time adaptive feedback active noise cancellation' on blackfin 533 EZKIT LITE. > I am using FXLMS...

Hi, > > I'm doing a project to do 'real time adaptive feedback active noise cancellation' on blackfin 533 EZKIT LITE. > I am using FXLMS algorithm. May i know if the above mentioned application can be implemented using block processing? As most of the ANC is implemented using sample by sample processing. Is there any sample ANC C code for BF533 EZKIT LITE available? Thank you. Look


interfacing ADAU1701 with controller/FPGA

Started by ramm...@ymail.com in Analog Devices DSPs14 years ago 2 replies

hi.. I would like to know about accesing ADAU 1701 using any controller(eg:STM32f). In my current project Speaker management system(to contrlo...

hi.. I would like to know about accesing ADAU 1701 using any controller(eg:STM32f). In my current project Speaker management system(to contrlo parameters like tone,delay,crossover etc for a series of speakers). I'm currently using ADAU 1701 DSP,its possible to control those parameters with its own GUI,but i hve to vary these parameter through a GUI,For these my senior engineers suggested to use...


Help Needed Where to start

Started by dioioib in Analog Devices DSPs14 years ago 3 replies

Hello, everyone. I am interested in DSP, specifically audio synthesis and wish to embark on educating myself on the Analog Devices TigerShark. I...

Hello, everyone. I am interested in DSP, specifically audio synthesis and wish to embark on educating myself on the Analog Devices TigerShark. I have been programming for many years, and C is not new to me. I find the development tools for the TigerShark to be very expensive and am looking for advice. Where should I start? Am I overlooking another option for development tools? Such as a bre...


Multiple 16bit SDRAM issue

Started by palani_andavan in Analog Devices DSPs15 years ago

I am working in custom designed BF561 board. I need a help in SDRAM control= ler(SDC). In my board, two 16bit SDRAM (MT48LC8M16A2 =96 2 Meg x...

I am working in custom designed BF561 board. I need a help in SDRAM control= ler(SDC). In my board, two 16bit SDRAM (MT48LC8M16A2 =96 2 Meg x 16 x 4 banks) are in= terfaced with bank0(SMS0) of SDC. SDQM0 and SDQM1 pins are connected to the DQML and DQMH pins of SDRAM1 resp= ectively. And the SDQM2 and SDQM3 pins are connected to the DQML and DQMH p= ins of SDRAM2 respectively. SMS0 pin is ...


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