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Tunebot Tunebot is a music search engine developed by the Interactive Audio Lab at Northwestern University. Users can search the database by humming or singing a melody into a microphone, playing the melody on a virtual keyboard, or by typing some of the lyrics. This allows users to finally identify that song that was stuck in their head. ==Searching Techniques==
Tunebot is a Query by humming system. It compares a sung query to a database of musical themes by using the intervals between each note. This allows a user to sing in a different key than the target recording and still produce a match. The intervals are also unquantized to allow for other tunings besides the standard A=440Hz, since not many people in the world have perfect pitch. In addition to note intervals, Tunebot compares a query with potential targets by using rhythmic ratios between notes. Since ratios between note lengths are used, the tempo of the performance does not affect the rhythmic similarity measure. Queries and targets are then matched by a weighted string alignment algorithm between the note intervals and rhythmic ratios.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Tunebot」の詳細全文を読む
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