Setting up default audio device

The short answer

A default audio device is the microphone (input) or speakers and headphones (output) that the operating system hands to most apps unless an app chooses something else. Setting it is a system Sound or Audio preference: pick the input you want to capture from and the output you want to hear through, then confirm each shows as Default. The steps change with the operating system, and a browser or meeting app can still use a different device even after the system default is correct.

This is microphone audio capture and speaker playback, not webcam video. Detection (the device appears in a list), access permission (the OS or browser is allowed to use it), and active input selection (which listed device is actually in use) are separate. A device can be plugged in and still unused if it is not the default, if permission was denied, or if an app overrode the system choice.

Input, output, and what default means

Most systems keep two defaults. Default input is the microphone or headset mic used for recording, calls, and dictation. Default output is the speakers, headphones, or headset earpieces used for playback. A headset often appears as both an input and an output; set each side independently. Some systems also list a default communications device, which call and meeting apps may prefer over the general default.

• If nobody can hear you, check default input (microphone).
• If you cannot hear others or media, check default output (speakers or headphones).
• If a webcam picture works but audio does not, the camera and microphone are separate devices and may need separate selection and permission.

Where to find the default audio controls

Look in the operating system's Sound or Audio settings, not in webcam or camera settings. Exact menu names vary by version, so treat the labels below as typical paths and match them to what you see on your computer.

• Windows: open Settings, then System, then Sound. Input lists microphones; Output lists speakers and headphones. The device marked Default is the system choice. A volume or sound icon in the taskbar also opens a quick picker for the current output, and sometimes input.
• macOS: open System Settings (or System Preferences on older versions), then Sound. The Input tab is the microphone list; the Output tab is speakers and headphones. Control Centre or the menu-bar volume control can switch output quickly; input is usually changed in Sound settings.
• Linux desktops: open Settings, then Sound or Audio (GNOME, KDE Plasma, and other desktops use slightly different names). Input or Recording is the microphone; Output or Playback is speakers and headphones. PipeWire, PulseAudio, or the desktop's sound panel is where the default is stored.

Physical cues help you confirm you have the right hardware: a headset with a mic boom, a mute button or LED on the mic, a USB or 3.5 mm plug, or an on-screen name that includes Headset, Microphone, Speakers, or the manufacturer model. Built-in mics are often labelled Internal, Built-in, or Array. Bluetooth devices appear only after they are connected.

How to set the default

• Connect the device and wait until it appears in the input or output list. If it is missing, the problem is detection (cable, power, Bluetooth pairing, or drivers), not default selection.
• Open the Sound or Audio settings for your operating system and open the Input list, the Output list, or both.
• Select the device you want. Use Set as default, Default, or a similar control if the list does not apply the choice on click. Repeat for input and output if you use a headset or a separate mic and speakers.
• Play a sound and watch the output level meter, then speak and watch the input meter. Activity on the meter for the selected device confirms that device is live.
• If you use calls or meetings, check whether the system offers a separate default communications device and set that too when the app follows it.

When the system default is not what the app uses

Browsers and many conferencing, recording, and chat apps keep their own microphone and speaker menus. Those menus are active input and output selection inside the app. They can ignore the system default. After you set the OS default, open the app or site's audio or settings panel and choose the same devices there. Browser camera and microphone permission is also separate: if access was blocked, the page cannot use the mic even when it is the system default. Restore permission in the browser's site controls, then reselect the device in the page.

Exclusive-mode playback on some Windows devices, a muted hardware switch, and an input volume of zero can make the correct default look dead. Unmute the hardware, raise the input level in Sound settings, and disable exclusive mode for that device if an app still cannot open it.

What to do next

If the device is in the list, mark it default at the system level, then match that choice in any app that has its own audio menu. If it is not in the list, fix connection and detection first. If it is default and permitted but silent, check mute, input level, and whether you adjusted input when the symptom is output, or output when the symptom is the microphone.