Webcam · Display & Sound
Select, test, and adjust the microphone built into your webcam
Many USB webcams include one or two small integrated microphones intended for casual calls, but they're rarely selected as the system default automatically, especially on a computer that also has a laptop mic or a separate headset. Confirming which microphone is actually active — and adjusting its input level — prevents the common problem of speaking into a camera that isn't listening.
What you should know
- Windows: Settings → System → Sound → Input, choose the webcam from the device list, and use "Test your microphone" to confirm the input level bar moves when you speak.
- macOS: System Settings → Sound → Input, select the webcam, and watch the input level meter while speaking to confirm it's picking up audio.
- Inside individual video call apps, double-check the microphone selection in that app's own audio settings — apps can retain a stale device selection even after the OS default changes.
- If available in a companion app, enable any built-in noise suppression or automatic gain control, since compact webcam microphones tend to pick up more room echo and keyboard noise than a dedicated headset.
- If audio sounds distant or tinny, it usually means the mic is positioned farther from your mouth than intended — repositioning the webcam or angling the monitor slightly can noticeably improve pickup.
Why it matters
"My camera works but nobody can hear me" is almost always a device-selection issue rather than a hardware fault, since a webcam's built-in mic and any other microphone on the system (laptop, headset, external mic) all compete to be the default — knowing where to check and switch it saves troubleshooting time in the first minute of an important call.
Best practices
- Set your preferred microphone explicitly inside each video app you use rather than relying solely on the OS default, since apps don't always follow OS-level changes automatically.
- Do a quick sound check before important calls, not just a visual level-meter glance — background hum or fan noise sometimes only becomes obvious when actually listening back to a recording.
- Prefer a headset or external mic over a webcam's built-in mic for calls where audio clarity matters more than convenience — compact webcam mics are convenience features, not high-fidelity ones.
Common problems and fixes
- Other participants can't hear you even though your webcam's camera works fine
- Check both the OS input device selection and the specific video app's own microphone dropdown — the two can be set independently and one may be pointing at the wrong device.
- Microphone picks up a lot of echo or room noise
- Enable noise suppression in the companion app if available, move closer to the microphone, or switch to a headset for calls in an untreated room.
Tips and tricks
- If you use the same webcam across multiple apps, set it as the OS-level default input device first — most apps fall back to that default unless explicitly overridden.
Frequently asked questions
Why does my microphone work in one app but not another?
Each app can store its own remembered microphone selection independent of the OS default, so switching microphones in one app doesn't automatically update the others.