On Bluetooth earbuds or speakers the sound arrives slightly after the picture. You rarely notice it while listening, but the moment you sing along or copy a speaker’s mouth shape, those few hundred milliseconds get in the way. ToneBrowser lets you slide the audio from -0.9 to +0.9 seconds until it lines up.
Wireless transmission is the usual culprit: Bluetooth adds tens to hundreds of milliseconds depending on the codec, and every pair of earbuds is different.
Even wired, the audio path of the device or the encoding of the video itself can leave a small offset behind.
That delay can only be corrected at playback, so ToneBrowser puts the correction in your hands.
The range is -0.9 to +0.9 seconds. If the sound lands late, pull the audio earlier; if it lands early, push it back.
Trust your eyes rather than your ears: find the point where the singer’s mouth opens exactly as the sound starts, and that value is the offset for the earbuds you are using.
Shadowing and language study: pronunciation only lines up when mouth and sound do.
Busking rehearsals: dial out the delay of a Bluetooth speaker so the backing track matches the lyrics or chords on screen.
Filming covers: matching the backing track to the take up front saves editing time later.
Run ToneBrowser as a small floating window while you open lyrics, chord charts, or a dictionary in another app.
See all featuresChange playback speed from 0.25x to 3.0x while keeping pitch locked. Perfect for instrument copying, language shadowing, and lecture bingeing. No chipmunk effect.
See all featuresLyrics for the currently playing track are fetched automatically, in multiple languages, and shown alongside the player.
See all featuresDownload ToneBrowser for free — change the key in 30 seconds.
