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How to eliminate microphone feedback using ADAU1401

SigmaDSP & SigmaStudio VasanthPradeep Mar 10, 2022 00:00 1 replies Original on forum ↗
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VasanthPradeep Question
Mar 10, 2022 00:00

Hi Everyone,

I am interested in designing a microphone feedback cancellation system using ADAU1401. The problem is when we consider a professional audio system (outdoor/indoor), the sound operator have to be very cautious about something called microphone whistling. This occurs when the audio coming out of the speaker reenters the microphone can create a resonating effect.

Here the microphone will be connected to a mixing console and the output from this directly goes to the power amplifier. Here my intention is to add one more device in between mixing console and power amplifier to reduce or completely cancel this resonating effect.

Can anyone help me figure out how to make this practical. How to design the algorithm for this using sigma studio.

Looking forward for solution.

Regards

Vasanth Pradeep

Audio Signal Processors

adau1702

sigma studio

adau1401

echo_cancellation

SigmaDSP Audio Processors

adau1402

noise_reduction

adau1701

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DaveThib Reply
Mar 14, 2022 00:00

Hello Vasanth,

This post will help you. There are two different approaches described with links to other posts.

(+) How to determine which frequency band has highest magnitude - Q&A - SigmaDSP Processors and SigmaStudio Development Tool - EngineerZone (analog.com)

Dave T