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ADAU1701 General (2nd order/lookup) filter block sending two sets of parameters?

SigmaDSP & SigmaStudio joe42 Jan 22, 2015 00:00 2 replies Original on forum ↗
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joe42 Question
Jan 22, 2015 00:00

I notice that when changing the frequency value in one of these filter blocks, SigmaStudio sends two sets of parameters to the DSP; the old, then the new, to the same address. What is the purpose of sending the old coefficients before new? This seems to happen on every kind of filter.

When implementing this in a microcontroller, we care about those several hundred extra bytes used up.. Do I need to bother mimicking the behavior of SigmaStudio, or can I just send the new coefficients?

Audio Signal Processors

block_write

parameters

SigmaDSP Audio Processors

adau1701

ADIApproved Reply
Jan 23, 2015 00:00

HI Joseph:

Just send the new coefficients. This is probably a UI "feature"

Regards

Miguel

EZAdministrator Reply
Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

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EZ Admin