| Melody-based music search -> Monitor Keywords |
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Melody-based music searchMelody-based music search description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080126304, Melody-based music search. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION
1. Field of the Invention This invention relates to a method to search songs by their melodies. 2. Description of the Related Art In prior art, music search has been performed by searching some keywords, such as its title, lyrics, or the performers. However, if we remember songs by their melodies, or hear some music without knowing what it is, it is difficult to find this song with the prior methods. In U.S. Pat. No. 6,121,530 [Sonoda, 1999], a web-based music search engine with melody input has been presented. It analyzes the whole database to find a threshold for adjacent pitch differences and another for span ratios, and then uses the thresholds to encode the pitch sequences into Up/Down/Equal category, and span sequences into Longer/Shorter/Equal. Finally, the encoded sequence from the query melody is compared with each sequence in the database to find the best match. However, the global thresholds might not best describe the melody contour of each song in the database. That is, melodies with relatively smaller pitch changes might be considered no change at all. This rough categorization leads to lots of false matches. Another problem is that if a note is missing in the input, or an extra note is added to it, the distance will be large due to misalignment of corresponding notes. In U.S. Pat. No. 6,188,010, a comparison method by marking peaks and dips is invented. However, it also suffers from the note misalignment problem. Another problem is that note spans are not considered. In U.S. Pat. No. 6,678,680, the note sequence is encoded into adjacent note differences and span ratios. The distance between the query and target is defined by the sum of the absolute differences between the two symbols from each coded sequence. This method also suffers from the note misalignment problem as the previous two. Moreover, when the duration information is encoded in the string, the distance calculated by the difference of two symbols does not correlate to the difference between two melodies successfully. SUMMARY OF THE INVENTIONA principal object of this invention is to provide a music search method in which a user can input the query by a melody. BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 shows a block diagram of a music search system in accordance with this invention. FIG. 2 shows a preferred embodiment of the client-end input device. FIG. 3 is a flow chart of the comparison engine which calculates the distance between the query melody and a target melody. FIG. 4 shows how a sequence of notes is encoded by the differences of the adjacent notes. FIG. 5 describes the detail of finding the alignment of smallest distance between two encoded sequences. FIG. 6 shows a preferred embodiment of the distance function between two elements in the encoded sequence. 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The indicators are selectable and may invoke functionality resident on the wireless device ... ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Melody-based music search or other areas of interest. ### Previous Patent Application: Locating and altering sensitive information in core dumps Next Patent Application: Method and apparatus for approximate matching where programmable logic is used to process data being written to a mass storage medium and process data being read from a mass storage medium Industry Class: Data processing: database and file management or data structures ### FreshPatents.com Support Thank you for viewing the Melody-based music search patent info. 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