Information processing apparatus, information processing method, and program
First Claim
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1. An information processing apparatus, comprising:
- a signal determining unit configured to determine signal data, wherein the signal data comprises a plurality of signals present in a mixed manner;
a log spectrum analysis unit configured to output a log spectrum of the signal data, wherein the log spectrum represents an intensity distribution of the signal data for each pitch;
a metadata extracting unit configured to analyze the signal data and extract, as a feature quantity of the signal data, metadata that changes along with passage of time of play of a music based on the log spectrum;
a determining unit configured to determine one or more object parameters and one or more audience parameters based on the extracted metadata; and
a switching unit configured to switch between one or more objects based on the one or more object parameters in a time sequence,wherein the one or more audience parameters control movement of audience objects placed in audience seats provided in a location different from a stage, wherein the one or more audience parameters comprise at least a music structure extracted from the metadata to determine the movement of the audience objects based on a type of a structure of the music being played.
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Abstract
An information processing apparatus is provided which includes a metadata extraction unit for analyzing an audio signal in which a plurality of instrument sounds are present in a mixed manner and for extracting, as a feature quantity of the audio signal, metadata changing along with passing of a playing time, and a player parameter determination unit for determining, based on the metadata extracted by the metadata extraction unit, a player parameter for controlling a movement of a player object corresponding to each instrument sound.
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Citations
23 Claims
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1. An information processing apparatus, comprising:
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a signal determining unit configured to determine signal data, wherein the signal data comprises a plurality of signals present in a mixed manner; a log spectrum analysis unit configured to output a log spectrum of the signal data, wherein the log spectrum represents an intensity distribution of the signal data for each pitch; a metadata extracting unit configured to analyze the signal data and extract, as a feature quantity of the signal data, metadata that changes along with passage of time of play of a music based on the log spectrum; a determining unit configured to determine one or more object parameters and one or more audience parameters based on the extracted metadata; and a switching unit configured to switch between one or more objects based on the one or more object parameters in a time sequence, wherein the one or more audience parameters control movement of audience objects placed in audience seats provided in a location different from a stage, wherein the one or more audience parameters comprise at least a music structure extracted from the metadata to determine the movement of the audience objects based on a type of a structure of the music being played. - View Dependent Claims (2, 3, 4, 5, 23)
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6. An information processing method, comprising:
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analyzing signal data comprising a plurality of signals present in a mixed manner; obtaining a log spectrum of the signal data, wherein the log spectrum represents an intensity distribution of the signal data for each pitch; extracting, as a feature quantity of the signal data, metadata that changes along with passage of playing time of a music based on the log spectrum; determining, based on the extracted metadata, one or more object parameters for controlling movement of one or more objects corresponding to the plurality of signals and one or more audience parameters for controlling movement of audience objects placed in audience seats provided in a location different from a stage; and switching between the one or more objects based on the one or more object parameters in a time sequence, wherein the one or more audience parameters comprise at least a music structure extracted from the metadata to determine the movement of the audience objects according to a type of a structure of the music being played. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A non-transitory computer-readable medium having stored thereon a set of computer-executable instructions for causing a computer to perform an operation, comprising:
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analyzing signal data comprising a plurality of signals present in a mixed manner; obtaining a log spectrum of the signal data, wherein the log spectrum represents an intensity distribution of the signal data for each pitch; extracting, as a feature quantity of signal data, metadata that changes along with passage of playing time of a music based on the log spectrum; determining, based on the extracted metadata, one or more object parameters for controlling movement of one or more objects corresponding to the plurality of signals and one or more audience parameters for controlling movement of audience objects placed in audience seats provided in a location different from a stage; and switching between the one or more objects based on the one or more object parameters in a time sequence, wherein the one or more audience parameters comprise at least a music structure extracted from the metadata to determine the movement of the audience objects according to a type of a structure of the music being played. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification