Guides
Practical fixes and plain-English explainers.
Microphone Settings GuideHow to select, enable and adjust your microphone on every version of Windows, on macOS and on…Webcam Settings GuideHow to enable, select and adjust your webcam on Windows 10 and 11 and macOS, including privacy…Discord Mic Not WorkingStep-by-step fixes when Discord cannot hear your microphone: input device, permissions, input…Zoom Camera Not WorkingFix Zoom when it cannot find or show your webcam: permissions, camera selection, other apps,…YouTube No SoundFix YouTube videos with no sound on Windows, Mac, Android and iPhone: player mute, tab mute,…Middle Mouse Button Not WorkingWhy the middle mouse button or scroll click stops working and how to fix it: settings, drivers,…Fix One Speaker Not WorkingFix audio playing from only one speaker or one earbud: balance, mono audio, cables, Bluetooth,…How to Test SpeakersHow to test speakers at home by ear in about ten minutes: left and right channels, phase,…Wired vs Wireless AudioCompare wired and wireless audio: latency, sound quality, Bluetooth codecs, battery, gaming,…Decibels ExplainedUnderstand decibels: what a dB is, A vs C weighting, why +3 dB doubles power, how to measure…Safe Noise LevelsHow loud is too loud? Safe exposure times by decibel, headphone safety, workplace and classroom…Hearing Health GuideHow online hearing tests work, what results mean, signs of high-frequency hearing loss, and how…Noise Colors ExplainedWhite vs pink vs brown noise and blue, violet and grey: how they sound, how their spectra…Recording Audio GuideHow to record your voice, computer audio, calls and podcasts on Windows, Mac and phones, choose…MethodologyHow SoundsChecker generates test signals, measures levels and pitch, and what accuracy you can…
Troubleshooting and blog
Step-by-step fixes live in Troubleshooting; explainers and how-tos in the Blog. Terms are defined in the audio glossary.