Echo Test Free Online
Hearing Test Detect microphone echo & feedback loops

Yes — 100% free with no hidden fees, no subscription, no premium tier, and absolutely no registration required. Every feature including live echo detection, feedback loop analysis, reverb tail measurement, signal clarity scoring, adjustable echo playback with delay/feedback/mix/gain sliders, 12-frequency hearing test, 6-point diagnostic panel, real-time oscilloscope, echo correlation visualizer, frequency spectrum analyzer, and 4-band frequency energy meters is completely free. Use it unlimited times on any device in any browser.

You hear your own voice echoing on calls because someone else in the call is using speakers without echo cancellation enabled. Your voice travels to them → plays through their speakers → gets picked up by their microphone → is transmitted back to you with a delay. The solution is for the other person to switch to headphones or enable Acoustic Echo Cancellation (AEC) in their conferencing app settings. Use this free echo test to confirm your own setup is echo-free before joining calls — if your diagnostics show "Clear" on Echo Loop and Feedback Risk, the source is on the other end.

No downloads, no installations, no browser plugins, no Flash, no extensions, and no account creation of any kind are required. This is a fully browser-based online echo and hearing test that runs entirely in JavaScript using the Web Audio API — built into every modern browser including Chrome, Edge, Firefox, Safari, and Opera. Open the page, click Start Echo Test, allow microphone access, and the complete echo analysis suite is immediately available, completely free, with no sign-up.

No. All audio processing happens 100% locally in your browser. Your microphone input is analyzed in real time using the Web Audio API — processed in JavaScript memory on your device and discarded immediately. Nothing is transmitted to any server, nothing is stored, nothing is recorded. The microphone permission is used only to analyze the audio signal locally. No personal data, no audio recording, complete privacy. Your voice never leaves your device.

Echo Playback routes your microphone input through an adjustable digital delay node and plays the delayed signal through your headphones or speakers, so you can hear exactly what echo sounds like at different delay times. Use the Delay slider (20ms–3s) to set how long the echo repeats after the original sound. The Feedback slider creates looping echo that repeats multiple times (simulating a feedback loop). The Wet Mix slider controls how loud the echo is relative to the dry signal. This helps you understand and diagnose different echo types before your next call. Always use headphones when Echo Playback is enabled to prevent acoustic feedback.

First confirm your own setup is echo-free using this free online test. Then in your apps: Zoom: Settings → Audio → Suppress persistent background noise → High, and check that Echo Cancellation is enabled. Microsoft Teams: Settings → Devices → Noise suppression → High. Google Meet: Settings (gear icon) → Audio → enable Noise cancellation. Discord: User Settings → Voice & Video → Enable Echo Cancellation. The most reliable fix for all platforms is switching to headphones — this physically prevents speaker audio from reaching your microphone and eliminates the echo source completely.

Echo is a distinct, audible repetition of a sound that occurs after a delay of 100ms or more — you hear your voice clearly repeated once or multiple times. Reverb (reverberation) is a continuous blend of many very short reflections (under 50ms each) that follow the original sound creating a "wet," "roomy" or "spacious" character — the sound decays gradually rather than repeating distinctly. Echo in video calls is almost always digital, caused by routing delays in the call audio path. Reverb is acoustic, caused by sound bouncing off hard surfaces in a room before reaching the microphone. Both reduce speech intelligibility and make recordings or calls harder to understand. This free tool's oscilloscope and correlation visualizer can detect both.

The hearing test plays pure sine wave tones at 12 frequencies from 125Hz to 20kHz through your speakers or headphones. You confirm whether you can hear each tone clearly. This tests three things simultaneously: (1) Your speakers or headphones' frequency response — a tone that is completely inaudible may be beyond their physical capability. (2) Your own hearing ceiling — most adults under 30 can hear to 18–20kHz; most over 40 cannot hear above 14–16kHz. (3) Your acoustic environment — in a highly reverberant room, tones will sound sustained or doubled, revealing that room treatment is needed before using an open microphone for calls or recording.

The echo correlation visualizer compares the current microphone signal against a slightly delayed reference copy of itself — measuring how closely they match over time using cross-correlation. When the room is quiet or only background noise is present, the graph shows a low, gently varying line. Distinct spikes appear when a recognizable audio event — a voice sound, clap, or loud tone — repeats in the microphone input signal, indicating that the sound reflected off a surface or looped through a speaker and was picked up again. Sustained high spikes during continuous speech indicate an active echo loop or strong room reverb that is degrading the microphone input.

Most free online echo tests simply play your voice back after a fixed delay — no analysis, no diagnostics, no visualization. This tool provides: a redesigned modern split-panel hero with live pulsing rings and real-time input meter before you even click Start; a full-screen oscilloscope waveform display; an echo correlation visualizer that actively detects repeated signals; a real-time frequency spectrum analyzer; 4-band frequency energy meters (sub/bass/mid/treble); dual input and echo measurement cards with live percentage readouts; a 6-card Echo Analysis Report; a 6-item live diagnostic panel (mic, echo loop, feedback risk, reverb, clarity, noise floor); adjustable echo playback with 4 sliders (delay, feedback, mix, gain); 9 delay preset buttons (50ms–3s); a 12-frequency hearing test (125Hz–20kHz); a 5-point quick-fix guide panel; 6 toggle options (echo cancellation, noise suppression, AGC, waveform, spectrum, echo playback mode) — all completely free, no registration, no download, no ads.