Music piece creation apparatus and method
First Claim
1. A music piece creation apparatus comprising:
- a storage section that stores music piece data composed of audio waveform data;
an analysis section that analyzes the music piece data stored in said storage section to determine sudden change points of sound condition in the music piece data;
a display device;
a display control section that causes said display device to display individual sound fragment data, obtained by dividing at the sudden change points the music piece data stored in said storage section, in a menu format having the sound fragment data arranged therein in order of complexity;
an operation section operable by a user, said operation section accepting user'"'"'s operation for selecting desired sound fragment data from the menu displayed on said display device and user'"'"'s operation for designating a time-axial position where the selected sound fragment data is to be positioned; and
a synthesis section that synthesizes new music piece data by positioning each sound fragment data, selected from the menu through user'"'"'s operation via said operation section, at a time-axial position designated through user'"'"'s operation via said operation section.
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Accused Products
Abstract
Music piece data composed of audio waveform data are stored in a memory. Analysis section analyzes the music piece data stored in the memory to determine sudden change points of sound condition in the music piece data. Display device displays individual sound fragment data, obtained by dividing the music piece data at the sudden change points, in a menu format having the sound fragment data arranged therein in order of their complexity. Through user'"'"'s operation via an operation section, desired sound fragment data is selected from the menu displayed on the display device, and a time-axial position where the selected sound fragment data is to be positioned is designated. New music piece data set is created by each user-selected sound fragment data being positioned at a user-designated time-axial position.
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Citations
10 Claims
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1. A music piece creation apparatus comprising:
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a storage section that stores music piece data composed of audio waveform data; an analysis section that analyzes the music piece data stored in said storage section to determine sudden change points of sound condition in the music piece data; a display device; a display control section that causes said display device to display individual sound fragment data, obtained by dividing at the sudden change points the music piece data stored in said storage section, in a menu format having the sound fragment data arranged therein in order of complexity; an operation section operable by a user, said operation section accepting user'"'"'s operation for selecting desired sound fragment data from the menu displayed on said display device and user'"'"'s operation for designating a time-axial position where the selected sound fragment data is to be positioned; and a synthesis section that synthesizes new music piece data by positioning each sound fragment data, selected from the menu through user'"'"'s operation via said operation section, at a time-axial position designated through user'"'"'s operation via said operation section.
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2. The music piece creation apparatus as claimed in claim 1 wherein said analysis section determines a musical characteristic of each of the sound fragment data obtained by dividing at the sudden change points the music piece data stored in said storage section, and said display control section causes said display device to display marks indicative of the musical characteristics of the individual sound fragment data along with the menu of the individual sound fragment data.
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3. The music piece creation apparatus as claimed in claim 1 wherein said analysis section determines a plurality of types of the sudden change points differing from each other in level of importance,
the user is allowed to designate a desired level of importance of the sudden change point by operating said operation section, and said display control section divides the music piece data at the sudden change points corresponding to the level of importance designated through user'"'"'s operation via said operation section.
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4. The music piece creation apparatus as claimed in claim 1 wherein said analysis section determines a plurality of types of the sudden change points differing from each other in level of importance, and said display control section divides the music piece data into a plurality of the sound fragment data at the sudden change points corresponding to a first level of importance, and
wherein, when one of the sound fragment data is selected, through operation via said operation section, from the menu displayed on said display device, said display control section divides the selected sound fragment data into a plurality of further sound fragment data at the sudden change points corresponding to a second level of importance and causes said display device to display a menu of the divided further sound fragment data.
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5. The music piece creation apparatus as claimed in claim 1 wherein the sudden change points of sound condition determined by said analysis section are each a sudden change point pertaining to at least one of band frequency components, tone volume and other tone factor.
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6. The music piece creation apparatus as claimed in claim 1 wherein said analysis section further analyzes a musical characteristic of each of the sound fragment data obtained by dividing at the sudden change points the music piece data stored in said storage section, and
wherein, when causing said display device to display the individual sound fragment data, obtained by dividing the music piece data at the sudden change points, in the menu format having the sound fragment data arranged therein in order of complexity, said display control section displays, in the menu, icons indicative of the musical characteristics of the individual sound fragment data analyzed by said analysis section.
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7. The music piece creation apparatus as claimed in claim 1 wherein said analysis section further analyzes complexity of each of the sound fragment data obtained by dividing at the sudden change points the music piece data stored in said storage section, to thereby generate indices indicative of the analyzed complexity of the individual sound fragment data, and
wherein said display control section arranges the individual sound fragment data, obtained by dividing at the sudden change points the music piece data stored in said storage section, in the order of complexity on the basis of the indices indicative of the analyzed complexity of the sound fragment data.
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8. The music piece creation apparatus as claimed in claim 7 wherein said complexity is determined on the basis of spectral variation of the sound fragment data.
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9. A computer-implemented method for creating a music piece, comprising:
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a step of analyzing music piece data stored in a memory storing music piece data composed of audio waveform data, to thereby determine a sudden change points of sound condition in the music piece data; a step of causing a display device to display individual sound fragment data, obtained by dividing at the sudden change points the music piece data stored in the memory, in a menu format having the sound fragment data arranged therein in order of complexity; a step of accepting user'"'"'s operation for selecting desired sound fragment data from the menu displayed on the display device; a step of accepting user'"'"'s operation for designating a time-axial position where the selected sound fragment data is to be positioned; and a step of synthesizing new music piece data by positioning each sound fragment data, selected by the user, at a time-axial position designated by the user.
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10. A computer-readable medium containing a group of instructions for causing a processor to perform a music piece creation procedure, said music piece creation procedure comprising:
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a step of analyzing music piece data stored in a memory storing music piece data composed of audio waveform data, to thereby determine a sudden change points of sound condition in the music piece data; a step of causing a display device to display individual sound fragment data, obtained by dividing at the sudden change points the music piece data stored in the memory, in a menu format having the sound fragment data arranged therein in order of complexity; a step of accepting user'"'"'s operation for selecting desired sound fragment data from the menu displayed on the display device; a step of accepting user'"'"'s operation for designating a time-axial position where the selected sound fragment data is to be positioned; and a step of synthesizing new music piece data by positioning each sound fragment data, selected by the user, at a time-axial position designated by the user.
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Specification