About VocalRange.net
A free vocal range test and pitch detector. Here is who is behind it, how it works and what it cannot do.
Who publishes this site?
VocalRange.net is published by Takreparation Skåne AB, Org.-Nr 556988-5931, Sparvgränd 6, 262 41 Ängelholm, Sweden. There is no named author on the pages: the text was written for the site and is based on the public sources listed on each page. It has not been reviewed by a voice teacher, so treat it as general information.
How does the test work?
Your browser gives the page a live microphone signal. Every thirty milliseconds or so the page takes the latest 4,096 samples and estimates the pitch with the YIN algorithm (de Cheveigné and Kawahara, 2002), a refinement of autocorrelation. Frames that are too quiet or not clearly periodic are ignored, readings are smoothed with a median over five frames, and a note only counts when it stays within 50 cents of itself for about half a second. The detector covers roughly 60 Hz to 1,400 Hz.
How is the voice type estimated?
The test compares your lowest and highest note with the typical range of six voice types (soprano C4–C6, mezzo-soprano A3–A5, alto F3–F5, tenor C3–C5, baritone A2–A4, bass E2–E4). The lowest note counts double, because low notes are more telling. The closest is “most likely”, and close seconds are “also possible”. This is a simple rule, not a classification: voice teachers also use tessitura, timbre and register changes.
Where do the note ranges come from?
From Wikipedia’s articles on voice type and vocal range, which cite voice-pedagogy books. Sources differ, so the numbers are guides.
What does the site not do?
It does not record or store your voice, it does not diagnose voice problems and it does not replace a teacher. If your voice is hoarse for more than about two weeks, see a doctor.
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Last updated: October 11, 2026