Echo Test (Loopback)
Test your microphone and speakers together by routing your voice back to your headphones or speakers with a short delay.
Echo / Loopback Test
Verify mic and speakers together with audio loopback.
Share your loopback results
Copy/download a report for support or IT.
If echo test isn’t supported
- • Try Chrome/Edge/Firefox/Safari (latest).
- • Enable JavaScript and disable blocking extensions temporarily.
Related guide: Fix echo and feedback in Zoom/Teams/Meet.
Click Start Echo to test your microphone and speakers together.
How this test works
We use the MediaDevices API to capture your microphone and the Web Audio API to route it back to your output with a short delay. Everything runs locally.
- • Your mic stream is processed in a browser AudioContext.
- • A small delay node makes the loopback easier to hear without confusion.
Troubleshooting
- • Use headphones to avoid feedback when testing loopback.
- • If you hear nothing, raise system volume and confirm the correct output device is selected.
- • If permission is denied, click the lock icon and allow Microphone, then reload.
- • Close apps that may be holding the microphone (Zoom, Teams, Discord) and retry.
Quick steps
- • Lower your volume (or plug in headphones) before starting.
- • Click Start Echo and allow microphone access.
- • Speak at normal volume and listen for your voice after a short delay.
- • Stop the test when finished to release the microphone.
If you hear feedback (squeal)
- • Switch to headphones.
- • Lower speaker volume and move the microphone farther from the speakers.
- • Disable audio enhancements that boost gain.
When to use this test
- • Before a meeting to confirm the full audio path works.
- • When others report echo and you want to verify your setup quickly.
- • After connecting a new headset to confirm mic + output together.
Safety and privacy
- • Audio is processed locally in your browser; nothing is uploaded.
- • Start with low volume to protect your ears and prevent feedback.
- • Stop the test to release the microphone when you are done.
Related tools
FAQ
What is an echo / loopback test?
It routes your microphone input back to your speakers or headphones with a short delay so you can confirm both devices work end-to-end.
Will this cause feedback?
It can if your speakers are loud and your mic is close. Start with low volume or use headphones to avoid audio feedback.
Do you record or upload my audio?
No. Audio stays in your browser and is not uploaded.
Why do I hear myself late?
A short delay is intentional so you can clearly distinguish your live voice from the loopback sound.
Why can’t I start the test?
If permission is blocked, use the lock icon in your browser to allow Microphone access, then reload the page and try again.