Zoom's audio panel holds about a dozen controls, and four of them decide how you sound: the input device, automatic volume adjustment, background noise suppression, and Original Sound. The rest are convenience. Open Settings, then Audio, and the Zoom audio settings are all on one screen. This page goes down that screen control by control, saying what each one does to the signal leaving your machine, what it is set to out of the box, and the one situation where changing it is the right move. Desktop first, since that is where the controls live. One caveat before you touch anything: none of these settings removes a dog, a flatmate, or the espresso machine two tables over. Suppression trims steady noise. It does not trim life.
The four settings that actually change your sound
Start with the input device, because every other control works on whatever it hands over. Zoom ships set to Same as System, which means your microphone follows whatever Windows or macOS picked the last time you plugged something in. Choose the device by name and it stops wandering mid-call. Under it sits the option to automatically adjust microphone volume, which rides your input level up and down for you.
- Input device: pick the headset or mic by name, not Same as System.
- Automatically adjust microphone volume: on by default; leave it unless your level visibly pumps.
- Suppress background noise: Auto, Low, Medium or High, and Auto is right for most rooms.
- Original Sound for musicians: off by default, and it switches most of the processing off with it.
Suppression is the one people over-tighten. Auto reads the room and picks a level for you. Low leaves long steady sounds like a fan mostly alone, so the far end still hears a room. High is aggressive enough that the quiet consonants at the ends of words can leave with the noise. If colleagues say you cut in and out, drop a level before you blame the connection. Original Sound is the opposite lever: it stops Zoom cleaning your microphone so an instrument or a singer arrives unmangled. Flip it on by accident and you have handed everyone your unfiltered room. Our walkthrough on Zoom background noise suppression goes deeper into level choice.
Original Sound, and why calls suddenly got noisy
Original Sound for musicians is the toggle that stops Zoom cleaning your microphone. No suppression, no automatic gain, and no echo cancellation unless you leave that part checked. For a guitar, a piano, or anyone whose dynamics are the point, that is exactly right, because Zoom's processing reads a held note as noise and ducks it. For an ordinary call it is a downgrade. It is also the setting people switch on once, forget, and then spend a month wondering why the office hum came back.
When to actually use it
Turn it on when what you are sending is meant to be heard as sound rather than as speech: a lesson, a rehearsal, an instrument demo. Use a wired external microphone and headphones while it is on, because with echo cancellation out of the way, speakers feeding a mic will howl within seconds. Turn it off the moment the music stops. If calls have sounded rough since some past rehearsal, this toggle is the first place to look, long before you start reading about why your mic picks up background noise. And when it is already off and the hum is still there, the setting was never the problem. The room was.
Setting the panel up, top to bottom
Set the Zoom audio settings once, before a call rather than during one. Open Zoom, click your profile picture, choose Settings, then Audio. Under Microphone, pick your headset or mic by name and say a few sentences while watching the input level meter: you want it moving through the middle third, not pinned at the right. Then record a few seconds and play it back. That playback is the only honest evidence you have, and our guide to an audio test before a meeting explains what to listen for.
Set suppression to Auto and leave it there unless a specific noise survives. Keyboard clatter is the usual survivor, and it has fixes beyond the slider, which we keep on the page about how to stop keyboard typing noise. Leave the automatic volume option ticked; untick it only if your level visibly pumps while you talk, and then set the level by hand and record another test. Last, confirm Original Sound is off. Run the pre-meeting audio checklist once a week and none of this drifts back on you.
If you work across more than one app, the panels differ in wording rather than in logic. Teams keeps its version with the device settings, and turning on Teams noise suppression is a single dropdown. Google Meet noise cancellation is a toggle that only appears for some accounts. Same four decisions, three panels.
When the panel is not the problem
Zoom on a phone or an iPad
The mobile app does not carry the panel. No suppression level, no input picker, no recorded test: the phone decides and Zoom mostly accepts what it gets. What you can still change is the microphone you speak into. Wired earbuds with an inline mic sit far closer to your mouth than a phone lying on a table, and closeness beats software almost every time. On an iPad the same limits apply.
A control is greyed out
On a managed laptop an administrator can lock parts of the Zoom audio settings, and a locked control looks identical to a broken one. If a setting will not move, sign out of Zoom and back in once, then check whether the same control responds in the browser version. Locked in both means policy, not fault, and no reinstall will change it.
Echo that no setting fixes
Echo is a loop, made by a speaker somewhere feeding a microphone, and it is nearly always created by the one person who cannot hear it. Suppression does nothing to it because the sound is real speech. Get headphones on the loudest suspect and it stops within a second.
Zoom audio settings: frequently asked questions
Where are the Zoom audio settings on desktop?
Click your profile picture in the top right of the Zoom app, choose Settings, then Audio in the sidebar. Speaker, microphone, input level, suppression and Original Sound all sit on that one screen. During a call you can reach the same panel from the small arrow beside the mute button.
Which suppression level should I use?
Auto, for most rooms. It reads the background and picks a level, and it is far less likely than High to chew the ends of your words. Move up only when a specific steady noise survives Auto. If anyone says you sound choppy or robotic, come straight back down a level.
Why do calls sound worse after a music session?
Original Sound for musicians is probably still switched on. It disables Zoom's suppression and automatic gain so instruments arrive untouched, and it stays that way until you turn it off yourself. Open Settings, then Audio, and check the toggle. Switching it off usually takes the room hum you have been hearing for weeks with it.
Can I change audio settings in the phone app?
Barely. The mobile app exposes almost nothing: no input picker, no suppression level, no microphone test. Your realistic lever is hardware: wired earbuds with an inline mic, held near your mouth. Anything needing the panel has to be done on the desktop app.
Do I need extra software if Zoom already suppresses noise?
Only if Zoom's own suppression leaves something behind. Its processing is tuned for steady sound, so fans and traffic go and voices and sudden clatter often do not. A dedicated tool sits earlier in the chain, before Zoom sees the signal, so it can be stricter. Our built-in versus software comparison weighs the two approaches before you install anything.