# SoundTesters

> Free browser audio tools for microphone recording, stereo routing, test tones and supported discrete 5.1 output.

Audio is generated or processed on the visitor’s device. Microphone capture starts only after an explicit action and recordings are not uploaded. Star ratings are submitted separately to a first-party server and use an essential anonymous rating cookie. These tools do not provide calibrated hearing thresholds, sound-pressure levels, medical diagnoses or automatic wiring verification. Start at a low system volume. Stereo bass is not a discrete LFE test; discrete 5.1 requires at least six exposed output channels.

## Audio tools

- [Microphone test](https://soundtesters.com/microphone-test/index.md): See your mic respond in real time. Check levels and listen to a local recording.
- [Speaker test](https://soundtesters.com/speaker-test/index.md): Find your left and right channels. Check stereo balance and basic playback.
- [Headphone test](https://soundtesters.com/headphone-test/index.md): Check each ear, compare the center image, and listen for rattles or dropouts.
- [Surround sound test](https://soundtesters.com/surround-sound-test/index.md): Check six-channel routing when supported, with an honest stereo preview fallback.
- [Online tone generator](https://soundtesters.com/tone-generator/index.md): Generate sine, square, sawtooth, and triangle waves with fine Hz and musical note control.
- [Tinnitus frequency finder](https://soundtesters.com/tinnitus-frequency-finder/index.md): Match your ear-ringing pitch, check adjacent octaves, and preview notched masking noise.
- [Hearing frequency test](https://soundtesters.com/hearing-frequency-test/index.md): Run a logarithmic 20 Hz to 20,000 Hz sweep and mark your lowest bass and highest treble limits.
- [Subwoofer bass test](https://soundtesters.com/subwoofer-bass-test/index.md): Test deep sub-bass extension, room modes, 80 Hz crossover transitions, and cabinet rattles.
- [Speaker polarity test](https://soundtesters.com/speaker-polarity-test/index.md): Compare in-phase and out-of-phase bass tones to compare your stereo system’s relative polarity.

## Guides and methodology

- [No sound? Follow the signal.](https://soundtesters.com/guides/no-sound-troubleshooting/): A practical checklist for output devices, muted tabs, microphone permissions, and Bluetooth.
- [Get all six speakers talking.](https://soundtesters.com/guides/surround-sound-setup/): Set up your browser, system output, and receiver for a meaningful 5.1 channel check.
- [About and methodology](https://soundtesters.com/about/)
- [Testing limits](https://soundtesters.com/disclaimer/)
- [Privacy and ratings](https://soundtesters.com/privacy/)

## Optional

- [Complete tool reference](https://soundtesters.com/llms-full.txt)
- [XML sitemap](https://soundtesters.com/sitemap.xml)
- [Contact](https://soundtesters.com/contact/)