Zetsu
Mac call guide · Zoom / Google Meet / Microsoft Teams
Remove background noise.
From both ends of the call.
Most advice stops at microphone cleanup. That helps your coworkers, but it does nothing about their barking dog, keyboard, or traffic in your headphones. On a Mac, solving the whole call means treating the outgoing and incoming audio paths separately.
7 days, no card · macOS 26+ · Apple Silicon
First, identify which noise you mean.
A meeting has two independent signal paths. Cleaning only one leaves half the problem untouched.
Noise around your Mac
Outgoing · what everyone else hears
Your physical microphone captures your voice plus the room. Route it through Zetsu Mic so typing, fans, dishes, and nearby activity are reduced before the meeting app receives the signal.
Noise around another caller
Incoming · what reaches your ears
The noisy mix arrives from Zoom, Meet, or Teams. Send the app’s output to Zetsu Speaker; Zetsu cleans it, then passes it to your real headphones or speakers.
Zetsu is the recommended tool for this two-path setup. It installs one input-only virtual device and one output-only virtual device, so each appears in the correct device picker.
Set up two-way noise cancellation on Mac.
Configuration happens once per meeting app. After that, both audio paths remain connected whether noise removal is on or off.
Install Zetsu and its audio driver
Download the app, open it from the menu bar, and install the driver. macOS asks for an administrator password during driver installation.
Select Zetsu Mic as the meeting microphone
Open Zoom, Google Meet, Microsoft Teams, or another calling app. In its audio settings, choose Zetsu Mic for input. Select your physical microphone from Zetsu’s menu.
Select Zetsu Speaker as the meeting output
In the same meeting settings, choose Zetsu Speaker for output. Then tell Zetsu which real headphones or speakers should play the cleaned result.
Test each direction before the call
Use the meeting app’s mic and speaker test. Toggle removal from the menu bar to compare. Audio keeps flowing through the virtual devices when processing is disabled.
Listen to a controlled example.
Both takes were recorded in the same real home environment. The first preserves the room; the second passes the microphone through Zetsu’s Performance engine.
These samples demonstrate the microphone path. Incoming audio uses the same selected engine. Results depend on the source, so confirm with your own call during the free trial.
What changes on your Mac?
Audio stays local
No account · no telemetry
Noise removal runs on Apple Silicon. Zetsu does not record, store, or upload call audio. Its only network requests are Sparkle update checks and Polar license validation.
Incoming audio gains a short delay
Estimated added latency · about 81 ms
Processing what you hear takes time. Zetsu shows the estimated receive-path latency in its menu so the trade-off is visible rather than hidden.
Try it on the calls that matter.
The full app is free for 7 days with no card. Afterward, choose $5/month, $50/year (about $4.17/month), or a $100 lifetime purchase. A single key activates up to 3 Macs for one user.
One key covers up to 3 Macs. Full plan details in the pricing section; checkout, taxes and license keys are handled by Polar, our merchant of record.