Active Noise Cancelling
Hello
I am trying to build a ANC System for HVAC Installations with the ADAU 1467.
I rebuilt the secondary path using the FXLMS but somehow the System is not stable.
I tried to implement a feedforward system for better stabilization.
Does anyone know where the problem could be?
0310.260311_BAT Versuch Woche 4.dspproj
Thread Notes
NandiniC - Moved from Processors & DSP to SigmaDSP Processors & SigmaStudio Dev. Tool. Post date updated from Thursday, March 12, 2026 3:05 PM UTC to Friday, March 13, 2026 4:52 AM UTC to reflect the move.
NandiniC - Moved from Processors & DSP to SigmaDSP Processors & SigmaStudio Dev. Tool. Post date updated from Friday, March 13, 2026 4:52 AM UTC to Friday, March 13, 2026 4:52 AM UTC to reflect the move.
software
adau1467
Sigma Studios 4.7
processors and dsp
Processors and Microcontrollers
Hello Nicolas1312,
This is actually a really tough question to supply a quick and easy answer. There are a lot of variables and some of the major ones have nothing to do with the DSP program but has to do with the physical setup and the acoustic environment. Well, I guess "nothing to do" is not exactly right but it influences a lot of how the entire system functions.
Search the forum for ANC and you will find a lot of posts that have dealt with a lot of different situations and you might find help there much more quickly.
These systems can become rather complex.
Then come back with more info on your entire system if you have not found good enough answers.
Dave T
Hello Dave
Thanks for your reply.
I have studied most of them but havent come to a sovccesfull result.
This would be the setup if it helps you Suggest anything.
Thanks
Nicolas
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