Why One Bluetooth Earbud Played 4 dB Louder in Our Test
Nobody files a ticket for a 4 dB difference between two earbuds. People nudge the volume up a notch, push one bud…
Discussions about Android Phone from Sound Tester listeners, answered and checked by the Sound Test Audio Team.
Music working but calls silent usually means the earpiece, call volume or a Bluetooth device is the problem. Raise call volume, disconnect Bluetooth…
Some equalizers reset because the app is closed in the background. Lock the app in recents and disable battery optimization.
A browser or phone meter gives a rough idea, good for comparing rooms. A quiet bedroom is around 30 to 40 dB.
Stutter on streaming but not calls usually points to the codec or a weak data link. Set the phone to SBC or AAC, turn off wireless charging heat and…
The warning is a safety feature common in Europe. You can confirm once, but keeping volume lower protects hearing. Check Sound settings for the…
If USB-C headphones show connected but stay silent, clean the port, reconnect them, check USB audio routing in Developer options and test with…
If only WhatsApp has no mic, the app permission is off. Allow the microphone in app settings and clear cache.
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Nobody files a ticket for a 4 dB difference between two earbuds. People nudge the volume up a notch, push one bud…
A 6 dB difference between the left and right channel looks like a rounding error on a spec sheet. On a conference-room…
The front pair plays, the subwoofer maybe hums, and the center and both rear speakers sit there like furniture. You…
Web developers and audio testers who build, test and maintain the Sound Tester tools on real headphones, speakers and microphones.

Audio & Acoustic Performance Lead
Brandon Vance is an Audio Output QA specialist focused on multi-channel soundstage testing, quick verification workflows, and precision distortion mapping. An active contributor to the…
Audio Team · Profile

Frequency Sweep Specialist
Xavier Cruz is the Frequency Sweep Specialist on the Sound Tester Audio Team. Dedicated to testing high and low frequency sweeps, sub-bass limits, and speaker rattling thresholds.
7 answers · Profile

Hearing Test Architect
Diana Chen is the Hearing Test Architect on the Sound Tester Audio Team. Designs precise web-based hearing calibration algorithms and variable tone thresholds.
8 answers · Profile

Headphone Benchmark Lead
Alistair Cross is the Headphone Benchmark Lead on the Sound Tester Audio Team. Expert in transient response tracking, left/right separation, and driver matching for studio monitors.
9 answers · Profile

Binaural Beats Engineer
Imogen Blake is the Binaural Beats Engineer on the Sound Tester Audio Team. Specializes in true spatial 3D audio, phase shifting, and binaural audio wave alignment.
7 answers · Profile

Surround Sound Auditor
Callum Sterling is the Surround Sound Auditor on the Sound Tester Audio Team. Focused on checking 5.1/7.1 spatial positioning accuracy, Dolby Atmos channel mappings, and sound leakage.
15 answers · Profile

Tone Generator Validator
Gemma Gallagher is the Tone Generator Validator on the Sound Tester Audio Team. Specializes in raw sine, square, and sawtooth tone generator checks and signal integrity debugging.
4 answers · Profile

Spectrum Analyzer Lead
Harvey Finch is the Spectrum Analyzer Lead on the Sound Tester Audio Team. Audits real-time fast Fourier transform (FFT) spectrum mapping and audio visualizer rendering accuracy.
10 answers · Profile
The newest replies from listeners and the Audio Team.