Run the check
Record a local voice sample and listen before joining a call.
Compare the call receiver's recording with the local sample.
Disable one noise-suppression or enhancement setting and repeat.
Read the result
A clean local file with degraded remote audio points beyond the microphone capture alone.
Limits and next step
The browser cannot reconstruct packet loss from a separate call app.
Repeat the check after changing one setting or connection. Keep a record of what changed before deciding whether the device needs service.