If only affecting some agents on some calls with agents using the same headsets, it may be what we have experienced.
We have found that noise suppression works great on the Jabra headsets however if there is an interruption to the connection of the headset on the agents PC, even briefly, then Genesys Cloud goes to the next microphone it can find in windows sound input devices, which in our case was the webcam microphone and this doesn't have noise suppression and picks up nearby conversations, but have seen it revert to the laptop microphone too.
Once the connection is restored to the original headset (in our case Jabra Evolve 40 UC), Genesys sound settings still indicated it was using computer settings, but the computer settings had changed back to the Jabra headset microphone. As there wasn't a change in state for the webcam mic it didn't force Genesys Cloud to recheck Windows sound settings to revert back to the Jabra headset so it continued using the webcam microphone.
Often a refresh or reselecting the blue 'Use computer settings' from the audio device profile resolves the issue and can be done on a call with immediate impact to call quality.

Hope this helps you or someone else reading this thread.
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Brendan Van Dam
City of Gold Coast
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Original Message:
Sent: 07-25-2023 04:00
From: Nicholas Squires
Subject: Background noise suppression on calls
Good morning Manu,
We are currently facing the exact same issue within our Genesys system.
We get varying levels of background noise across agents with the same settings (as you've mentioned above) and with the same headsets.
Agent A could be picking up so much background noise that it's hard to hear the customer, where as Agent B seems the noise suppression is actively working.
We do not currently have a fix for this either, so very interested to see if anyone else mentions anything.
Regards,
Nick Squires
MIB
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Nicholas Squires
Motor Insurers' Bureau
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Original Message:
Sent: 07-24-2023 00:11
From: MAnu KAndwal
Subject: Background noise suppression on calls
Didn't receive any answer from forum members, seems no one has faced this issue or are handling noise issues via separate methods.
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MAnu KAndwal
Accenture Solutions Private Limited
Original Message:
Sent: 06-20-2023 18:18
From: George Ganahl
Subject: Background noise suppression on calls
Interesting topic...haven't run into this question over the years, but makes sense. I'll be monitoring.
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George Ganahl GCP (Genesys Cloud), CCXP
Principal PS Consultant
Genesys