How to reduce background noise in a call center
Clear customer calls come from a few small fixes working together: mic placement, sensible gain, a quieter desk and real-time noise cancellation.
“Background noise” is several different problems
Record a short call from the agent’s real dialer and listen for what dominates.
Nearby agents
The hardest: their speech resembles the agent’s. Microphone direction and distance matter most here.
Keyboards and desk impacts
Short, changing sounds close to the mic. Move the keyboard off the microphone’s pickup axis and keep the headset cable and boom off the desk.
Ventilation and equipment hum
Steady, and usually easier to reduce. Excessive microphone gain can still make a quiet fan sound much louder to the customer.
Speaker echo
The caller’s voice leaking from speakers into the mic. A headset removes most of that physical path; echo cancellation is the software fallback.
Reduce call center noise before and after it reaches the microphone
Use a boom headset and position it consistently
Boom near the corner of the mouth, not in front of the lips. A close voice gives every later processing stage a better signal. Demonstrate the position during agent onboarding.
Set microphone gain deliberately
A moderate fixed level beats automatic gain. Automatic gain raises the room whenever the agent pauses. Verify quiet and loud voices, and never fix placement by turning the mic up.
Improve the workstation and room
More spacing, no face-to-face seating, softer surfaces. Keep noisy equipment away from microphone booms and use absorptive partitions. Room changes reduce noise without altering the voice.
Add real-time noise cancellation
Clean the mic before it reaches the dialer. A system-level virtual microphone works across every calling platform a team uses.
Configure one clean audio path from headset to customer
Kleervox runs on the agent’s computer as a virtual microphone — no plugin per calling platform.
- 1
Select the physical headset
In Kleervox, pick the headset mic — never the virtual Kleervox microphone itself.
- 2
Choose a sensible cancellation strength
Start at the default level. Raise it only after a test call shows the voice stays natural during fast speech and interruptions.
- 3
Select “Kleervox Microphone” in the call app
Use it as the input in the dialer, Zoom, Meet, Teams or Discord. Keep the agent’s real headset as the listening device.
- 4
Avoid unnecessary processing stacks
Two strong suppressors in series can clip words. If the call platform also applies aggressive suppression, compare it on and off.
- 5
Record a repeatable quality check
Same script, same background, every time. Compare intelligibility, naturalness, nearby speech, keyboard sounds and silence between phrases.
Verify it in a real call, not only in settings
The dialer adds its own gain, codecs and suppression — check what the customer actually hears.
- Boom mic close to the corner of the mouth
- Input gain clear for speech, not higher
- The physical headset selected in the cleaning app
- Kleervox Microphone selected in the dialer
- Nearby speech and keyboards reduced on a test call
- Words stay natural during double-talk
- Re-tested after any headset or desk change
Call center background noise FAQ
For the processing itself, read how AI noise cancellation works. For Linux workstations, see noise cancellation for Linux.
How can I reduce background noise in a call center?
Start with a close-positioned boom headset, lower unnecessary microphone gain, separate agents where practical, soften reflective surfaces, and enable real-time noise cancellation. Test the complete path inside the actual calling software before rolling the setup out.
What type of headset is best for a noisy call center?
A wired or wireless headset with a directional boom microphone is usually easier to control than a laptop or webcam microphone. The boom should remain close to the corner of the mouth, and the input gain should be only high enough for clear speech.
Why can customers still hear nearby agents through a noise-cancelling headset?
Nearby voices are difficult because they resemble the agent’s own speech. Headset microphone direction, distance, room layout, and software suppression all matter. No single layer can guarantee complete removal without affecting voice quality.
Should I use both the call app and Kleervox noise cancellation?
Begin with one primary suppression layer. Stacking multiple aggressive noise removers can make speech sound gated or unnatural. Compare a test recording with each setup and keep the combination that preserves the agent’s voice best.
Does echo cancellation help with call center background noise?
Echo cancellation solves a different problem: the remote caller’s voice playing through speakers and returning through the microphone. Headsets usually prevent that acoustic path, while noise cancellation targets keyboards, ventilation, chatter, and other room sounds.
Test noise cancellation with your own microphone
Mix your mic with sample background sounds and compare original versus cleaned.
Try the browser demo