Why Is My Microphone so Quiet?

If people keep asking you to speak up, the cause is usually a setting, the wrong device or mic placement — not a broken microphone. Work through these fixes in order.

First, Measure Your Level

Open the microphone test, press Start and talk normally. Note the Level in dBFS:

• Around -30 to -12 dBFS while speaking — your mic is at a healthy level. If people still can’t hear you, the problem is in the calling app (skip to fix 7).
• Below -40 dBFS — the input really is too quiet. Work through the fixes below and re-test after each one.

1. Pick the Right Microphone

Laptops, webcams and headsets each have their own mic, and the computer may be using the wrong one — often a webcam mic across the room. In the test, open the microphone list and try each one. Then set the right one as the default:

• Windows: Settings → System → Sound → Input → choose your device.
• macOS: System Settings → Sound → Input.

2. Raise the Input Volume

• Windows: Settings → System → Sound → select your microphone → set Input volume to 80–100.
• macOS: System Settings → Sound → Input → drag Input volume up.

3. Turn on Microphone Boost (Windows)

Some mics need extra amplification. Open Control Panel → Sound → Recording, double-click your microphone, open Levels, and set Microphone Boost to +10 or +20 dB. Higher boost also raises background hiss, so use the lowest value that works.

4. Move the Microphone Closer

Distance matters more than any setting. Every time you double the distance, the level drops by about 6 dB. A headset boom should sit about two fingers from the corner of your mouth; a desk mic works best 10–20 cm away and pointed at you.

5. Speak into the Right Side

Many USB microphones pick up sound from the side, not the top. If yours is quiet, check the manual or look for a logo marking the front.

6. Check the Gain Knob

USB and audio-interface microphones often have a gain knob on the mic or interface. Turn it up until loud speech peaks around -6 dBFS in the microphone test.

7. Fix the Calling App

Discord, Zoom, Teams and others have their own input settings:

• Select the same microphone as in your system settings.
• Turn off “automatically adjust microphone volume” if it keeps lowering you, or turn it on if you’re quiet and it’s off.
• Check you’re not using push-to-talk with the wrong key.
• In Discord, check the input sensitivity isn’t cutting you off between words.

8. Update or Reinstall the Driver

Open Device Manager → Audio inputs and outputs, right-click your microphone and choose Update driver. For USB mics, unplug and reconnect to a different port. For headsets with their own software, install the latest version.

9. Check the Hardware

• 3.5 mm headsets: a combined headset jack on a laptop needs a 4-pole (TRRS) plug, and desktop PCs often need a splitter for the pink mic input.
• Muted switch: many headset cables and USB mics have a mute button or a light that turns red when muted.
• Damaged cable: if the level drops or crackles when you move the cable, it’s damaged.

When to Replace the Microphone

If every setting is correct, the mic is close, and the level still sits below -40 dBFS — or the playback in the microphone test is distorted — the microphone is likely faulty. A basic USB mic or a headset with a boom microphone is an affordable, dramatic upgrade over laptop microphones.

Published October 29, 2026 · More in audio & video tests.