Start by measuring: the level meter and a test recording
A microphone that is not detected and a microphone that is merely quiet are different problems. This guide is for the second one: people on the call say they can hear you, just barely, or your recordings need the volume turned all the way up. If nothing is getting through at all, our guide on a microphone that is not working is the faster route.
Quiet input comes from three layers: too little sound physically reaching the microphone, an input volume set low in the operating system, and call apps adjusting gain on their own. They interact, which is why changing one setting often seems to help and then the level drifts back down. So measure first, then fix things in order.
Open our mic test, allow access, and speak in your normal voice from your normal position. A healthy signal moves through the middle to upper part of the input level meter without touching the top. If the meter only stirs near the bottom while you talk, the input really is low. If it keeps hitting the top, you have the opposite problem, clipping, which sounds harsh and distorted. The live waveform tells the same story: a nearly flat line means a weak signal, and flattened peaks mean too much. On the numeric readout, values closer to zero are louder, and zero is the ceiling.
Then use the short record and playback feature and listen to yourself. That is the closest you can get to hearing what others hear. If the meter looks fine but people still say you are quiet, the evidence points at the call app's processing or the listener's own volume rather than your microphone. Repeat the same sentence at the same loudness after each change below so you can tell which one made the difference. Everything runs in your browser and your audio is never uploaded.
Make sure the right microphone is selected
This is the most common cause and the easiest to miss. You are wearing a headset, but the computer is actually listening through the webcam on top of the monitor or the laptop's built-in array microphone. Those sit much farther from your mouth, so your voice arrives faint and distant, with a lot of room sound. A quick check is to tap the headset boom lightly with a fingertip. If the meter barely reacts, the headset is not the active input.
Use the input device selector in our test to switch between devices while speaking at the same loudness, and you will see immediately which one picks you up best. Once you have found it, set that device as the default input in the operating system and also inside each call app. Apps frequently remember their own choice instead of following the system default, and the default can change silently when a Bluetooth headset reconnects or you plug into a dock.
Operating system input volume and microphone boost
On Windows, go to Settings, then System, then Sound, choose your input device and open its properties to find the input volume slider. It is often set lower than you would expect, so raise it first. In the classic Sound control panel, the Recording tab leads to the device's properties and a Levels tab, where some devices show a separate Microphone Boost slider. It mostly appears for analog microphones on a 3.5 mm jack and is usually absent for USB microphones.
On macOS, open System Settings, then Sound, select the Input tab, pick your device and adjust the input volume slider. The input level bars just below it should fill past the halfway point when you speak normally. Some USB microphones and audio interfaces do not let the operating system control their level at all; in that case use the gain knob on the hardware or the manufacturer's software.
Boost works, but it is not free. Amplification raises everything equally: the self-noise of the microphone circuit, fan noise from the computer, the echo of the room. If you need maximum boost just to be audible, the real problem is that too little sound is reaching the microphone, and fixing the physical causes below will sound far better than more gain. Add boost one step at a time and use record and playback to hear how much hiss each step brings with it.
When apps keep turning your level back down
If you raise the input volume and find it lowered again after a call, suspect automatic gain control. Zoom has an option to automatically adjust microphone volume, Discord has Automatic Gain Control in its voice settings, and Teams offers automatic adjustment of mic sensitivity. These features turn you down when something loud happens. A single cough or laugh can drop the gain sharply, and recovery is slow, which leaves your ordinary speaking voice quiet.
Browser-based meeting services usually open the microphone with automatic gain and noise suppression switched on as well, and in some setups they can move the system input volume itself. Add the level correction in a headset vendor's utility and you have several controllers fighting each other. The cure is to put one of them in charge. If you prefer a level you set by hand in the operating system, turn off automatic adjustment in each app. If you would rather let the app manage it, leave the system level comfortably above the middle so the app has signal to work with.
Some apps, Discord among them, do not transmit anything below an input sensitivity threshold. With a weak signal, the beginnings and ends of your words fall under the threshold and get cut, which makes you seem even quieter. Raising the input level properly is the real fix; lowering the threshold manually helps in the meantime. Noise suppression can also mistake a faint voice for background noise and shave it away, so compare with it on and off.
Physical causes: distance, direction, plugs and microphone type
Microphones are very sensitive to distance. Doubling the gap between your mouth and the microphone cuts the sound reaching it by far more than half, so pulling a desk microphone a hand's width closer can do the work of a step or two of boost with no added noise. Direction matters too. Cardioid microphones, the usual pattern for streaming and podcast models, favour sound from the front and reject sound from the rear. Speaking into the top of a microphone designed to be addressed from the side, or having it turned back to front, costs a great deal of level. Check the manual for which face is the front. A headset boom should have its capsule pointed at your mouth.
Look for a volume wheel or mic switch on the headset's inline control. Then check the plugs. A headset with a single four-pole (TRRS) plug carries both microphone and headphone signals, and using it with a desktop that has separate mic and headphone jacks requires a Y splitter adapter. A headset with two plugs needs the opposite kind of adapter for a laptop's combo jack. The two adapters look alike but are not interchangeable, and a splitter made for sharing one output between two pairs of headphones will not carry a microphone signal at all. A plug that is not pushed fully home can also produce a very faint signal.
Finally, the type of microphone matters. Some dynamic microphones with XLR connectors have inherently low output, so they need a lot of gain from the audio interface, and if the interface runs out of clean gain an inline preamp helps. XLR condenser microphones, on the other hand, need phantom power; with the interface's 48V switch off they are silent or extremely faint. Dynamic microphones do not need phantom power, and USB microphones draw power through the cable, so neither point applies to them.
A recommended setup order
Follow the path the sound takes. First, confirm the correct microphone with the device selector in our test. Second, sort out the physical side: position and direction, the inline volume wheel, plugs and adapters, phantom power. Third, set the gain on the microphone or interface itself, then the operating system input volume, and add boost only if you are still short, one step at a time. Last, select the same microphone inside your call apps and decide whether automatic gain stays on or off.
At each stage the target is the same: normal speech sits in the middle to upper part of the meter, and a deliberately loud sentence or a laugh still does not reach the top. Finish with a recording and listen to the balance between your voice and the background. If hiss bothers you in a quiet room, slightly less gain and a closer microphone is almost always the better trade. And if raising the level has exposed echo or noise, our guide on microphone echo and noise is the next step.