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EP0731446A1
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A microprocessor device for selection and recognition of musical pieces
Assignee: Generalmusic SpA
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Filing: 1995-03-08
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Granted: —
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Expires: 2015-03-08
Abstract
Abstract The invention relates to a microprocessor device for the selection and recognition of musical pieces, comprising means for generating musical notes connected to a governing microprocessor which by means of memories containing a plurality of libraries of reference pieces, compares an inputting musical piece with other pieces present in the libraries; which microprocessor, through a plurality of sequential phases, is able to recognise and identify the inputted notes and pair them with an identical piece in the libraries. Where no identical piece is found, a further phase, working on a basis of an error threshold, can identify musical pieces which are not identical to the inputted piece.
Inventors
- 👤 Giovanni Antonio Giudici
- 👤 Maurizio Galanti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:43
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/0033; G10H2240/00; G10H2240/121; G10H2240/131; G10H2240/141
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
A microprocessor device for the selection and recognition of musical pieces, characterized in that it comprises means for generating digitalized musical notes which are encodedly inputted to access a plurality of libraries contained within a memory, which libraries are constituted by reference notes for musical pieces; said meals for generating and said memories being managed by a single microprocessor in which said memories reside and to which said means for generating are connected, said microprocessor also managing means for logically discriminating for comparing inputted notes sent from said means for generating, by consent of a switch, with said libraries, for selecting and recognising in real time musical pieces which include said inputted notes.
Claim 2
Dependent Claim
121 words
A microprocessor device as in claim 1, characterized in that said means for logically discriminating consist in a sequential plurality of procedural phases, comprising: a first phase wherein the inputted notes are read in encoded form; a search phase wherein two notes from the inputted notes at a time are read; and a comparison made through a numerical sequence, known as a recognition pattern, which numerical sequence represents a difference between an encoded note in numerical form with a value from 0 to 11 and a following note similarly encoded; by means of which recognition pattern a memorized sequence in the libraries can be compared with an inputted sequence, and if a perfect correspondence results a musical piece has been recognised.
Claim 3
Dependent Claim
47 words
A device as in claim 2, characterized in that a recognition error threshold is provided, if no perfect recognition of the inputted reference piece is made, below which recognition error threshold a musical piece is identifiable which contains a minimum error with respect to the inputted notes.
Claim 4
Dependent Claim
51 words
A device as in claim 2, characterized in that said sequential plurality of procedural phases provides for a situation in which the reference piece is not identified and thus there is no correspondence between a sequence of reference numbers generated within the memories and a reference pattern inputting from the sources.
Claim 5
Dependent Claim
27 words
A device as in claim 1, characterized in that said means for discriminating provide a two-dimensional array according to which said sequence of reference numbers is organized.
Claim 6
Dependent Claim
33 words
A device as in claim 5, characterized in that said recognition pattern provide two single-dimensional arrays, of which one relates to a search for musical pieces while another relates to any recognised errors.
Claim 7
Dependent Claim
24 words
A device as in claim 6, characterized in that each bit of each array assumes a value from between - 11 to + 11.
Claim 8
Dependent Claim
29 words
A device as in claim 2, characterized in that said numerical sequence representing a series of differences between encoded notes is calculated in accordance with a standard MIDI code.
References Cited (Backward Citations)
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