You may hear your voice in a remote room while the browser records the wrong microphone. A laptop input can still capture speech from across the desk. That makes the mistake easy to miss until the audio has more room echo than expected.
Identify the active input
Look at the microphone choice inside the recording page and at the browser's permission controls. Then make a short recording. Speak near the intended microphone, move away from it and say a second sentence. A clear change can help identify which input is active.
Use a light touch on the microphone stand only if it is safe for the equipment. Do not hit the microphone or blow into it. A gentle handling sound is enough for this test, and it should never be part of the final recording.
Compare the sample with the computer's built-in microphone selected on purpose. This gives you a reference for the room sound. Delete or clearly label these test clips so they are not confused with interview material.
After changing the input
Make another short recording and play it back. A selected name is useful evidence, but the saved sound is the final check. If the browser does not list the microphone, connect it before opening the recording page and confirm operating-system permission.
Some setups use separate permissions for the browser and the site. Check both rather than repeatedly clicking the room link. Keep only the interview tab open during setup, and tell the host when the input test is complete. That is more useful than simply saying the microphone seems to work.