About AudioTest
What the site is for
AudioTest provides free browser tools for checking everyday audio setups: whether a channel plays on the expected side, whether a microphone receives a signal, or where a buzz appears during a frequency sweep. You can use the tools without an account or a separate audio application.
The aim is to help you repeat a check and decide what to investigate next. A listening test alone cannot establish the condition of every component in a signal chain.
Choose a test for the question
- Stereo Test plays isolated left and right channels so you can check routing and compare the two sides.
- Mic Test shows incoming signal level and lets you record a short clip locally for playback.
- Frequency Sweep and Bass Test play changing or low-frequency tones to help locate audible differences, rattles, or dropouts.
- Tone Generator provides selectable tones for a controlled listening comparison.
- Latency Test helps compare perceived audio timing across playback setups.
See all available tools and the instructions on each test page.
How the tests work and where they stop
The tools use the browser's Web Audio API to generate or analyze signals. On playback tools, a waveform displays a signal inside the browser. It does not measure the sound leaving a speaker. Your output device, system processing, room, and listening position affect the result.
Microphone levels depend on the microphone and its input settings. The decibel tool is an estimate, not a calibrated sound-level meter. Hearing tools are listening demonstrations, not clinical hearing tests. The surround demonstration uses stereo positioning and does not verify discrete 5.1 or 7.1 outputs.
Read the testing methods and limitations for preparation steps, interpretation, and useful comparisons.
Audio and website data
Test audio is generated or processed locally in your browser. Microphone tools request permission before accessing an input. When you choose to record in Mic Test, the clip is held locally for playback; the tool does not upload it to a server.
Local audio processing does not mean the website collects no data. The site uses analytics and includes advertising integrations, which are separate from audio processing. Read the privacy policy for details.
Advertising and affiliate links
The tools are available free of charge. The site includes advertising integrations and affiliate links. If you buy through an affiliate link, we may earn a commission at no additional cost to you. A browser test does not establish that you need to buy replacement equipment; check settings, cables, and another device first.
Feedback and corrections
If a result or instruction seems wrong, include the page address, browser, connected input or output device, and steps to reproduce it. Visit the contact page to send feedback or a correction.