MUSICAL COMPOSITION DISCRIMINATION APPARATUS, MUSICAL COMPOSITION DISCRIMINATION METHOD, MUSICAL COMPOSITION DISCRIMINATION PROGRAM AND RECORDING MEDIUM

• US 20110011247A1
• Filed: 02/22/2008
• Published: 01/20/2011
• Est. Priority Date: 02/22/2008
• Status: Abandoned Application

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Gayama, Shinichi, Kodama, Yasuteru
• Application Number:
  US12/918,962
• Publication Number:
  US 20110011247A1
• Time in Patent Office: Days
• US Class Current: 84/622
• CPC Class Codes: G10H 1/0008 Associated control or indicating means
• CPC Class Codes: G10H 2210/066 for pitch analysis as part of wider processing for musical purposes, e.g. transcription, musical performance evaluation; Pitch recognition, e.g. in polyphonic sounds; Estimation or use of missing fundamental
• CPC Class Codes: G10H 2240/085 Mood, i.e. generation, detection or selection of a particular emotional content or atmosphere in a musical piece
• CPC Class Codes: G10H 2240/251 Mobile telephone transmission, i.e. transmitting, accessing or controlling music data wirelessly via a wireless or mobile telephone receiver, analog or digital, e.g. DECT GSM, UMTS smartphone, PDA or palmtop used for musical purposes G10H2230/015; mobile ringtone G10H2230/021
• CPC Class Codes: G10H 2250/235 Fourier transform; Discrete Fourier Transform [DFT]; Fast Fourier Transform [FFT]
• CPC Class Codes: G10L 25/48 specially adapted for particular use

Abstract

A musical composition discrimination apparatus, a musical composition discrimination method, a musical composition discrimination program and a recording medium, provide a musical composition and information thereon as desired by a user. In the musical composition discrimination apparatus, a system control unit 4 calculates from the musical composition data a music interval power-additional level corresponding to a harmony provided by the musical composition, calculates a harmony clearness indicative of a degree as to whether the harmony is acoustically clearly audible or not, based on the calculated music interval power-additional level, and discriminates an impression of the musical composition based on the harmony clearness.

Claims

1. A musical composition discrimination apparatus comprising:

a music interval power-additional level calculation unit that calculates a music interval power-additional level from musical composition data as inputted;

a harmony clearness calculation unit that calculates, based on a music interval power-additional level as calculated, a harmony clearness indicative of a degree as to whether a harmony is acoustically clearly audible or not; and

a musical impression discrimination unit that utilizes the harmony clearness to discriminate an impression of the musical composition, and

wherein;

said music interval power-additional level calculation unit utilizes a weighting coefficient to make a calculation of the music interval power-additional level, a value of said weighting coefficient in a high-frequency band of the musical composition data being smaller than that of another band;

said harmony clearness calculation unit utilizes a correction coefficient to make a calculation of the harmony clearness, said correction coefficient being set as a smaller value in case where a sum of music powers other than those of consonances is large.

2. The musical composition discrimination apparatus as claimed in claim 1, wherein:

said harmony clearness calculation unit calculates the harmony clearness based on deviation of the music interval power-additional level.

3. The musical composition discrimination apparatus as claimed in claim 1, wherein:

said music interval power calculation unit calculates the music interval power-additional level of a part of the musical composition; and

said harmony clearness calculation calculates the harmony clearness based on the music interval power-additional level of a part of the musical composition.

4. The musical composition discrimination apparatus as claimed in claim 1, further comprising:

a lower beat level detection unit that detects a lower beat level of the musical composition data; and

wherein;

said musical impression discrimination unit utilizes any one value of a value as calculated by the harmony clearness calculation unit and a value as detected by the lower beat level detection unit to discriminate the impression of the musical composition.

5. A musical composition discrimination method comprising:

a music interval power-additional level calculation step for calculating a music interval power-additional level from musical composition data as inputted;

a harmony clearness calculation step for calculating, based on a music interval power-additional level as calculated, a harmony clearness indicative of a degree as to whether a harmony is acoustically clearly audible or not; and

a musical impression discrimination step for utilizing the harmony clearness to discriminate an impression of the musical composition, and

wherein;

said music interval power-additional level calculation step utilizes a weighting coefficient to make a calculation of the music interval power-additional level, a value of said weighting coefficient in a high-frequency band of the musical composition data being smaller than that of another band;

said harmony clearness calculation step utilizes a correction coefficient to make a calculation of the harmony clearness, said correction coefficient being set as a smaller value in case where a sum of music powers other than those of consonances is large.

6. A non-transitory computer readable recording medium in which a musical composition discrimination program, which is to be executed by a computer included in a musical composition discrimination apparatus to cause the computer to function as:

a music interval power-additional level calculation unit that calculates a music interval power-additional level from musical composition data as inputted;

a harmony clearness calculation unit that calculates, based on a music interval power-additional level as calculated, a harmony clearness indicative of a degree as to whether a harmony is acoustically clearly audible or not; and

a musical impression discrimination unit that utilizes the harmony clearness to discriminate an impression of the musical composition, and

wherein;

said music interval power-additional level calculation unit utilizes a weighting coefficient to make a calculation of the music interval power-additional level, a value of said weighting coefficient in a high-frequency band of the musical composition data being smaller than that of another band;

said harmony clearness calculation unit utilizes a correction coefficient to make a calculation of the harmony clearness, said correction coefficient being set as a smaller value in case where a sum of music powers other than those of consonances is large.

7. (canceled)