moduLab – YouTube Transpose & Pitch Shift

Finds the key and applies real-time transpose and pitch shift to YouTube audio with on-device analysis and formant correction.

moduLab helps musicians, singers, and learners find the key of music and apply real-time transpose and pitch shift while it plays in YouTube or YouTube Music. Tonal analysis runs entirely on your device with Sonance (LH). Features • Detect the tonal center, major/minor mode, confidence, an alternate result, and analyzed coverage. • Transpose and pitch-shift audio in real time from -12 to +12 semitones. • Preserve vocal character with optional formant correction and automatic or manual voice-base control. • Use Bypass to pass captured audio through without pitch or formant processing. • Pause tonal analysis during detected ads while audio processing remains active. • Store settings and derived tonal results locally so a previous result can appear when you revisit a track. Privacy • Sonance (LH) analyzes audio entirely on your device. • Selected-tab audio stays in memory during processing and is not sent to moduLab or any remote analysis service. • moduLab does not access your microphone, require an account or Google sign-in, sell user data, or use user data for advertising. Usage Open a supported YouTube or YouTube Music tab and click the extension icon. Starting processing may restart the current track from the beginning for a clean analysis. While processing is active, Chrome tab capture replaces the tab’s original audio output with moduLab’s processed output. moduLab Pro for iPhone and iPad Practice with your own audio files using transpose, chords, lyrics, tuner, and metronome tools. View moduLab Pro on the App Store: https://apps.apple.com/us/app/modulab-pro/id6752724025 moduLab is not affiliated with or endorsed by YouTube or Google.