Check office sound exposure after moving a microphone

You moved a microphone and now the office sound reading is different. That may mean the sound changed, but it can also happen because the microphone is closer to a noise source, points in a different direction, or sits on a surface that vibrates.

Use the Noise Meter to compare readings under similar conditions. It can help you spot changes and find noisy times or locations, but a browser reading is not a certified workplace exposure measurement.

Compare the readings

1. Open the Noise Meter on the same computer and browser you used before moving the microphone. Allow microphone access when the browser asks. Use the same microphone for both checks.
2. Place the microphone near the position of your ear while seated at your normal workstation. Keep it still, uncovered, and away from direct contact with the desk, keyboard, or a vibrating surface. Note its height, direction, and distance from you.
3. Check the reading while the office is doing a typical task, such as a meeting or normal desk work. Observe it for about a minute rather than relying on one instant. Avoid speaking directly into the microphone during the check.
4. Repeat the check during a similar activity and, if useful, at the microphone's old position. Write down the location, time, activity, microphone, and reading. Compare similar periods, not a quiet room with a busy one.

If you did not take a reading before moving the microphone, you cannot recreate that exact baseline. You can still use the same placement and method to check how readings vary across work periods and locations from now on.

What the result means

The new position reads higher

The microphone may be closer to a person, fan, printer, or other sound source. A nearby desk or monitor can also reflect sound toward it. This is a reason to check the position and the sound around it, not proof that your overall exposure has increased.

The new position reads lower

The microphone may now be farther from a noise source or partly shielded by furniture. Check that it is not under a shelf or behind a monitor, then compare it near your usual seated position. A lower reading from a poorly placed microphone may not represent what you hear at your chair.

The readings jump around

Office sound changes from moment to moment. Voices, doors, equipment cycles, and keyboard sounds can cause short peaks. Compare readings over similar periods and activities. A single peak does not tell you how much sound you experienced over a full shift.

The reading changes when the sound seems the same

Microphone sensitivity, input volume, browser processing, and the microphone's direction can affect the number. A browser meter's decibel reading should be treated as a comparison, not a calibrated dBA result. Keep the same device, microphone, browser, and input settings for useful comparisons.

How to get a more useful comparison

1. Match the microphone position. Put it at the same height and direction for each check, near where your head normally is while working. Do not compare a microphone on the desktop with one held beside your ear.
2. Keep the conditions similar. Compare the same kind of work at a similar time, with the same equipment running. Note any changes, such as a meeting starting or a printer running nearby.
3. Check which microphone is selected. If you use a headset, webcam, and built-in microphone, the computer may select a different input after you move or reconnect equipment. On Windows 11, open Settings › System › Sound and check the selected input. On macOS, open System Settings › Sound › Input.
4. Check microphone permission. If the meter cannot access the input, click the site controls beside the browser address bar and allow microphone access for the page. On Windows 11, check Settings › Privacy & security › Microphone and make sure microphone access is enabled. On macOS, check System Settings › Privacy & Security › Microphone and allow your browser.
5. Move it away from vibration and airflow. A microphone touching a desk, speaker, or computer case can pick up vibration. A fan blowing directly across the microphone can also affect readings. Use a stable stand and keep its position consistent.
6. Close other audio apps for the check. A calling or recording app may use the microphone at the same time or change how it handles input. Close those apps, reload the meter, and repeat the comparison.

Know what a browser meter can tell you

The Noise Meter uses your device's microphone to show sound readings. Microphones are made for different purposes and have different sensitivities. The operating system or browser may also adjust the input. Unless the microphone and measurement setup have been calibrated for sound-level measurement, the displayed number cannot establish a precise exposure level or prove that a workplace meets a safety limit.

Exposure depends on both sound level and time. A quick check can help you notice a change, but it cannot calculate a reliable full-shift dose. If the readings remain concerning, employees report discomfort, or your workplace needs a formal assessment, contact the person responsible for workplace safety. Use a calibrated sound-level meter or personal noise dosimeter and follow your workplace's assessment process.

The Noise Meter asks for microphone permission to show readings. You do not need to record audio to compare the sound levels.