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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (20 topics).
20 topics · 80 messages
Filtered by: #coefficient ✕
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the coefficients of biquad do not match
Hello! I'm writing code for a microcontroller, and I've reached the stage of equalization, but I'm facing difficulties. In the sigma studio window, the coefficients differ from the generator built int
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Write Biquad Coefficients through SPI
Hello, After uploading the schematic shown in the photo to the ADAU1467z, I exported the file and set it up to be remotely controlled via a Teensy 4.0. I used an SPI connection, and I confirmed that t
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ADAU1452 Coefficient-Calculation-on-DSP Filter-Module in Sigma Studio 4.6 Parameter Update
I use the filter >filters/coeff calculations/second order/single precision/general (2nd order)< in combination with the module >basic DSP/parameter update<. I get access to many parameters (variable n
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ADAU1787 - NLMS initial coefficients
Hi! I was trying to setup an NLMS filter in sigma studio on the ADAU1787 Eval board. I noticed that there is no way to set an initial coefficients in the NLMS block. Is it possible to initial the proc
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[SHARING] Filter coeficents online calculator with sample code for C++, C#, MicroPython and Arduino Sketch
Hi guys, im sharing an online filter calculator, that can generate sample/example codes for C++, C#, MicroPython and Arduino Sketch, also you can check your own code calculations results This calculat
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[ERRORS] at ( Calculating Filter Coefficients to Store in a Microcontroller ) provided documentation.
Hi AD guys, I have found errors on Calculating Filter Coefficients to Store in a Microcontroller documentation ( this link) , there errors is inside attachment 8244.Parameteric_5F00_EQ_5F00_IIR_5F00_C
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2nd order peaking filter coefficients calculations
Hi, I'm currently using a 2nd order peaking filter for doing EQ on a project. As part of that I need to calculate the IIR coefficients to send to the DSP and I'm having problems. Currently the calcula
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Calculating coefficients for parametric and peaking EQ on a PC
Hello! I need to generate coeeficients for peaking EQ on microcontroller. I have seen wiki, but there is no information about peaking EQ calculation. And it's my first question: were I can find inform
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Read filter from I2C EEPROM
Hi! I am using the ADAU1466 in a current project. It is selfbooting from an SPI EEPROM but uses I2C for control. I was wondering if there is any way that the DSP could pull filter settings for one spe
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Does Phase setting can use coefficient calculate then write in DSP?
Hi, As I know, the filter can use calculation to obtain the coefficient and using MCU to set the DSP to make EQ or High/Low pass filter can be adjusted very free. If I want to use encoder to adjust th
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Filter coefficents order in Safeload operation
I'm working on ADAU1467 in combination with an STM32F4 microcontroller. In red below the question. In order to implement a Safeload operation to update filter coefficents I saw that from my "*_PARAM.h
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Calculating ADAU1701 coefficients in uP for long double vs float (64bit vs 32bit.)
The question first: Given that the actual coefficients in the ADAU1701 are only really 28 bits (the first nibble of the first byte is always a zero) how important is it that I calculate coefficients u
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LowPass Filter coefficient calculation
Hi all, I am checking the Low Pass Filter coefficient to use on my micro-controller, I have researched some topic, like https://ez.analog.com/message/21166?commentID=21166#comment-21166 and the wiki:
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How to use Auto EQ filter coefficients in general 2nd order filter?
I am happy to find the Auto EQ module in Sigma Studio to generate filter coefficients for EQing a speaker but am unsure of how to implement those filter coefficients. The Auto EQ wiki says to use a Ge
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ADAU1452 Filter control/parameters
I'm using a general 2nd order filter (with automaticcalculated coefficients) block on Sigmastudio 3.13. On this block I'm able to select the filter type. Among filter types of interest for my project
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Real Time Control TUTORIAL: SAFELOAD, Fixing and Breaking variables
Hi There, how are you all? I've seen around here many people having trouble to control Sigma DSPs in real time. So I decided to write a little "walkthrough" guide. Let's get started: Now that you SOME
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SigmaStudio 3.5.7 multiple filter IIR coefficient input
When I have multiple series filters using IIR coefficient inputs I get the following behavior when attempting to paste values into the coefficient fields. Open the 1st filter in the series for coeffic
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different from the helping document
Hi! I find a serious proble that the value of coefficient which generate from the SigmaStudio is different from the equation of helping document! For example,a 1st order filter,We set for 1000HZ frequ
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Problem generating filter coefficients
Using Method 1 from https://ez.analog.com/message/5485 but on a 2nd order HighPass on an ADAU1442 I'm having trouble generating the coefficients for the 2nd order HPF algorithms, they don't match what
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Calculating Filter Coefficients to Store in a Microcontroller
Recently there have been some email support requests regarding the calculation of filter coefficients (and other types of parameters) for storage in a microcontroller. The basic idea is to store a tab