About & Technology
About Speaker Test 'n' Cleaner
High-precision audio verification and acoustic cleaning tools designed for headphones, stereo setups, soundbars, and surround sound systems.
Our Technical Architecture & Methodology
Most audio testing websites rely on compressed static MP3 files or basic single-channel loops. Speaker Test 'n' Cleaner was engineered from the ground up using the W3C Web Audio API to synthesize pure, uncompressed acoustic waveforms in real time within your browser client.
This direct hardware synthesis provides several distinct technical advantages:
- Zero Codec Compression: Test tones are mathematically generated sine waves free of MP3/AAC compression artifacts or pre-echo distortion.
- Hardware-Direct Channel Routing: On compatible operating systems (Windows, macOS, Linux) and multichannel sound cards (HDMI, optical, 5.1/7.1 DACs), the browser dynamically maps independent audio streams directly to physical surround outputs.
- Accurate Binaural HRTF Simulation: When running on stereo headphones, our surround engine calculates head-related transfer functions and subtle frequency filtering to mimic natural front-versus-rear ear perception.
- Privacy by Design: No audio is recorded, sampled, or uploaded to any server. All processing takes place entirely on your device.
Explore the Tools
Frequently asked questions
Is any audio recorded or uploaded?
No. Every tool runs entirely in your browser using the Web Audio API — nothing you hear is ever sent to a server, recorded, or stored anywhere but your own device's local storage (used only to remember your speaker layout).
Why does every test channel use the same tone?
The Speaker Test tool's stereo and surround tabs intentionally play the same 440Hz reference tone from every channel. The point of these tools is to verify spatial routing — which speaker is playing — not to test pitch. Varying the tone per channel actually makes it harder to judge position, since your ear has to separate "different pitch" from "different location."
Can this really test a real 5.1, 7.1, or custom speaker system?
If your operating system has your sound device configured for multichannel output (5.1/7.1/9.1), your browser reports more than 2 available output channels, and we route true discrete audio to each one. If it only reports stereo — the most common case, especially on headphones — we simulate each speaker's position using binaural panning instead, which still gives you a meaningful directional test. The Customize option lets you add or remove speakers to match a setup that doesn't fit a standard layout.
Is the Speaker Cleaner safe to use?
It plays tones within the normal operating range of any speaker, so it will not damage healthy hardware. As with any water-damaged device, wipe away visible moisture first, keep it on a flat surface, and if it's been submerged, wait 24–48 hours before powering it on regardless of what any cleaning tool tells you.
Does this work on mobile?
Yes — both tools work on modern mobile browsers. The Speaker Cleaner in particular is built primarily for phone speakers, as a phone speaker cleaner sound.