StreamLive Pro

Sound in the browser studio: levels, mute and noise filter

How sound works in the browser studio: a volume and level meter on every tile, mute keys, noise suppression, auto level, music ducking and the guests' own mix.

Updated November 5, 2026 · 4 min read

The browser studio has no separate mixer window. Each input carries its own sound controls on its tile: a volume slider with a live level meter, a Sound or mute button, and for cameras the microphone they use. The Audio window in the studio bar holds what applies to your voice as a whole: noise suppression, a studio voice chain, automatic level and music ducking, plus Active Speaker. The rule that ties it together: the sound of a camera, a video or a guest is heard only while it is on air.

Before you start

• Headphones. Speakers next to an open microphone send the guests and the videos back into the live.
• The right microphone. Choose it when you add a camera, or pick one on the tile (Choose microphone). If the browser does not hear it: My microphone does not work in the browser.
• Chrome or Edge for the full sound chain. Safari and every browser on iPhone and iPad keep their own built-in noise suppression; the studio's panel says so there.
• Any plan, including the trial. Active Speaker, which switches cameras by who speaks, depends on the plan: /pricing?lang=en.

Steps

1. Open the studio. Choose Live stream, start a new live and pick Browser Studio.
2. Set each input's level. On every video, audio and camera tile there is a volume slider with a level meter under it. The meter shows the level after the slider and the mute, and turns grey when the input is muted. Double-click a slider to put it back to its default.
3. Open Audio quality. In the bar open Audio and press the noise button. The Audio quality panel shows In and Out meters and a Gain control.
4. Choose the noise suppression. Basic (browser built-in), Low (keeps room tone), High (removes background noise) or Voice isolation (for babies or a television in the next room). In the live studio the host starts on Voice isolation.
5. Choose the extras. Studio voice (rumble filter, de-esser, compressor), Auto level (evens your voice to -16 LUFS) and Duck media/music under speech (lowers videos and music while you talk).
6. Mute fast. M mutes or unmutes the selected input, or the Preview input. Shift+M mutes only your own speaker; viewers hear no change.
7. Switch on Active Speaker if you want. Under Audio, Active Speaker moves Program to whoever is talking, host or guest: Automatic camera switching for podcasts: the camera follows whoever speaks.

Who hears what

Each guest hears a mix of everyone except themselves (mix-minus), so nobody hears their own echo. A mute you apply to a guest enters that mix too: Manage guests during a live: mute, place, remove.

Levels that work

• Speak at your normal level and watch the meter. It should move clearly with your voice and never sit at the top.
• Auto level listens only while you speak and evens your voice toward -16 LUFS, so a quiet sentence and a loud one come out closer together. A limiter stops sudden peaks.
• Music under speech: leave Duck on, and set the music tile lower than your voice.
• While you record, a level bar under the Record timer shows sound arriving; if no sound arrives in the first seconds, the studio warns you.

What can go wrong

• Viewers do not hear a video. It is not on Program, or its Sound button is off.
• A guest hears an echo. Someone has speakers next to a microphone: Echo during a live stream with guests.
• You cannot hear a guest. I cannot hear my guest in the live stream.
• A multi-channel sound card shows two channels. Browsers limit many USB audio interfaces to two channels, and the studio does not process interfaces with more than two. Mix in the interface or in its software first.
• My voice sounds processed. Lower the noise suppression to Low or Basic, or turn off Studio voice.

Frequently asked questions

Does the browser studio have an audio mixer?

Not as a separate window. Every input has its own volume, meter and mute on its tile, and the Audio window holds noise suppression, auto level and ducking.

Can I remove background noise during a live?

Yes. In Audio quality choose High or Voice isolation. In Safari the browser's own suppression is used.

Why can I not hear my second camera?

Sound follows picture: a camera's microphone is heard only while that camera is on air. Your main microphone is always heard.

Can music play quietly while I talk?

Yes. Turn on Duck media/music under speech, and the studio lowers videos and music whenever you speak.

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