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ADAU1861 Recommended for New Designs
The ADAU1861 is a codec with three inputs and one output that incorporates two digital-signal processors (DSPs). The path from the analog input to the...
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Lark studios software issue

sim1919

on Dec 12, 2024

Category: Software

Product Number: ADAU1861

Hi,

I have tried to rebuild the code mentioned in the picture below but I couldn't be able to cancel out the noise signal. How to calculate the coeff of the filters and is there any particular software which is used to calculate the Coeff, please let us know.

0 JoseDiaz

on Dec 16, 2024 5:26 AM
Hi Sim1919

You need to calculate the transfer functions between your microphones/Speakers and Drum reference point (what ideally you are hearing). you will need some lab equipment (ears simulators, amplifier, data aquisition....) to get those transfer functions.

Once you have those transfer functions you will have to design your filters to cancel that signal. The transfer functions will depend on the mechanic acoustical device.

Sorry if this answer does not allow you to get ANC directly, but there are some steps before you can design your filters for ANC.

Regards, Jose
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Lark studios software issue