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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (14 topics).
14 topics · 61 messages
Filtered by: #iir ✕
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What filter is better to use for big PEQs?
Hi, My question is similiar to: https://ez.analog.com/dsp/sigmadsp/f/q-a/64602/what-is-the-best-way-to-make-a-typical-10-band-eq I have a lot of different blocks for 2 inputs + 8 outputs. And I want t
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adau1761
Hi, I need a guide for the coefficient calculation for IIR filters. attached is a straightforward project but I have a calculation problem. 7318.Design 1.dspproj the project needs to set many IIR filt
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How to make really slow filters on ADAU1466
For the thermal simulation (and limiting) of one of our products we need a 0.5 mHz filter to track a thermal time constant of something getting hot over time. I've tried an IIR filter with single orde
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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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Preload value of IIR filter?
I'm working on making thermal models of speaker drivers to guard these from overheating, and predict before they overheat. I made a model for the power delivered to the driver and are modelling voice-
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Peaking filter and Notch filter coefficient formula
Hello guys, I have some problem on calculate the Peaking and Notch filter. In SigmaStudio wiki ( SigmaStudio Wiki ), I can not get both filter formula information, and I reference the Robert Bristow-J
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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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IIR cascade FIR, incorrect phase response display
Hello. I'm using chip ADAU 1701, fs=48000. Sorry, I am a newbie in filter designing. I would like to design an IIR Notch filter at 1kHz. I used "ScopeIIR" software to get the IIR coefficients. Then, I
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Matlab Filter Design vs Stimulus/Probe show different results
Here is my MATLAB filter design: SOS and G matrix output: SigmaStudio Code: And finally Stimulus/Probe output: What am I missing here? The magnitude is waaaaay off and the peak frequency is also shift
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A Question encountered in IIR filter design
Experiment：We design an IIR filter in Matlab，then the filter is transplanted to Sigmastudio，However the Magnitude Responses obtained by Matlab and Sigmastudio are different。Why？ The Detailed operation
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MATLAB SOS matrix to cascaded IIR blocks for higher order filters
I have been trying to implement a filter I designed in MATLAB using the 2nd order IIR blocks in SigmaStudio but with no luck... I found that MATLAB's filter design tool will output a filter in a matri
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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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Load IIR Coefficients from internal calculation
I have a board with an ADAU1761 and an 8051 micro, and am trying to make the HPF and LPF with a variable frequency. At the moment the micro is pulling the sin(w0) and cos(w0) results from an external