MUSIC AUDIO SIGNAL GENERATING SYSTEM
First Claim
1. A music audio signal generating system comprising:
- a signal extracting and storing section configured to extract a separated audio signal including only an audio signal of musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind and store the separated audio signal for each tone of the musical instrument sounds, and also store a residual audio signal;
a separated audio signal analyzing and storing section configured to analyze a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components and then store the plurality of parameters in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters;
a replacement parameter storing section configured to store harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of a plurality of tones generated by a musical instrument of a second kind, the harmonic peak parameters being created from an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, and required to represent, using the harmonic model, audio signals of the plurality of tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the separated audio signal;
a replaced parameter creating and storing section configured to create replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters, which are stored in the separated audio signal analyzing and storing section and indicate the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind, with harmonic peaks included in the harmonic peak parameters, which are stored in the replacement parameter storing section and indicate the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and then store the replaced harmonic peak parameters thus created;
a synthesized separated audio signal generating section configured to generate a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters, which are stored in the separated audio signal analyzing and storing section, and the replaced harmonic peak parameters stored in the replaced parameter creating and storing section; and
a signal adding section configured to add the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind.
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Accused Products
Abstract
A system for timbral change, capable of changing timbres included in an existing music audio signal to arbitrary timbres. Replaced harmonic peak parameters are created by replacing a plurality of harmonic peaks included in harmonic peak parameters, which are stored in a separated audio signal analyzing and storing section 3 and indicate relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a first kind, with harmonic peaks included in harmonic peak parameters, which are stored in a replacement parameter storing section 6 and indicate relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a second kind and corresponding to each tone generated by the musical instrument of the first kind. A synthesized separated audio signal generating section 7 generates a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the replaced harmonic peak parameters.
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Citations
22 Claims
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1. A music audio signal generating system comprising:
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a signal extracting and storing section configured to extract a separated audio signal including only an audio signal of musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind and store the separated audio signal for each tone of the musical instrument sounds, and also store a residual audio signal; a separated audio signal analyzing and storing section configured to analyze a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components and then store the plurality of parameters in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; a replacement parameter storing section configured to store harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of a plurality of tones generated by a musical instrument of a second kind, the harmonic peak parameters being created from an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, and required to represent, using the harmonic model, audio signals of the plurality of tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the separated audio signal; a replaced parameter creating and storing section configured to create replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters, which are stored in the separated audio signal analyzing and storing section and indicate the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind, with harmonic peaks included in the harmonic peak parameters, which are stored in the replacement parameter storing section and indicate the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and then store the replaced harmonic peak parameters thus created; a synthesized separated audio signal generating section configured to generate a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters, which are stored in the separated audio signal analyzing and storing section, and the replaced harmonic peak parameters stored in the replaced parameter creating and storing section; and a signal adding section configured to add the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind. - View Dependent Claims (8, 9, 10, 11, 12, 20, 21)
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2. A music audio signal generating system comprising:
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a signal extracting and storing section configured to extract a separated audio signal including only an audio signal of musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind and store the separated audio signal for each tone of the musical instrument sounds, and also store a residual audio signal; a separated audio signal analyzing and storing section configured to analyze a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components and then store the plurality of parameters in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; a replacement parameter storing section configured to store harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of a plurality of tones generated by a musical instrument of a second kind and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components, the harmonic peak parameters and the power envelop parameters being created from an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, and required to represent, using the harmonic model, audio signals of the plurality of tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the separated audio signal; a replaced parameter creating and storing section configured to create replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters, which are stored in the separated audio signal analyzing and storing section and indicate the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind, with harmonic peaks included in the harmonic peak parameters, which are stored in the replacement parameter storing section and indicate the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and then store the replaced harmonic peak parameters thus created, and also configured to create replaced power envelope parameters by replacing the power envelope parameters, which are stored in the separated audio signal analyzing and storing section and indicate the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind, with the power envelope parameters, which are stored in the replacement parameter storing section and indicate the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and then store the replaced power envelope parameters thus created; a synthesized separated audio signal generating section configured to generate a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the power envelope parameters, which are stored in the separated audio signal analyzing and storing section, as well as the replaced harmonic peak parameters and the replaced power envelope parameters stored in the replaced parameter creating and storing section; and a signal adding section configured to add the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind. - View Dependent Claims (4, 5, 6, 7)
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3. A music audio signal generating system comprising:
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a signal extracting and storing section configured to extract a separated audio signal including only an audio signal of musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind, and store the separated audio signal for each tone of the musical instrument sounds, and also store a residual audio signal; a separated audio signal analyzing and storing section configured to analyze a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components and then store the plurality of parameters in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; a replacement parameter storing section configured to store harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of a plurality of tones generated by a musical instrument of a second kind and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components, the harmonic peak parameters and the power envelop parameters being created from an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, and required to represent, using the harmonic model, audio signals of the plurality of tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the music separated audio signal; a musical instrument category determining section configured to determine whether or not the musical instrument of the first kind and the musical instrument of the second kind belong to the same category of musical instruments; a replaced parameter creating and storing section configured to create replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters, which are stored in the separated audio signal analyzing and storing section and indicate the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind, with harmonic peaks included in the harmonic peak parameters, which are stored in the replacement parameter storing section and indicate the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and then store the replaced harmonic peak parameters thus created, and also configured to create replaced power envelope parameters by replacing the power envelope parameters, which are stored in the separated audio signal analyzing and storing section and indicate the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind, with the power envelope parameters, which are stored in the replacement parameter storing section and indicate the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and then store the replaced power envelope parameters thus created; a synthesized separated audio signal generating section configured to generate a synthesized separated audio signal for each tone, using parameters other than the harmonic peak parameters, which are stored in the separated audio signal analyzing and storing section, and the replaced harmonic peak parameters stored in the replaced parameter creating and storing section if the music instrument category determining section determines that the musical instrument of the first kind and the musical instrument of the second kind belong to the same category, or using parameters other than the harmonic peak parameters and the power envelope parameters, which are stored in the separated audio signal analyzing and storing section, as well as the replaced harmonic peak parameters and the replaced power envelope parameters stored in the replaced parameter creating and storing section if the music instrument category determining section determines that the musical instrument of the first kind and the musical instrument of the second kind belong to different categories; and a signal adding section configured to add the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind.
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13. A music audio signal generating method implemented in a computer to cause the computer to execute the steps of:
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extracting a separated audio signal including only an audio signal of each tone included in musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind, and also extracting a residual audio signal; analyzing a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; creating harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a second kind based on an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, wherein the harmonic peak parameters are required to represent, using the harmonic model, audio signals of a plurality of tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the separated audio signal; creating replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind; generating a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the replaced harmonic peak parameters; and adding the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind.
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14. A music audio signal generating method implemented in a computer to cause the computer to execute the steps of:
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extracting a separated audio signal including only an audio signal of each tone included in musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind, and also extracting a residual audio signal; analyzing a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; creating harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a second kind and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components based on an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, wherein the harmonic peak parameters and the power envelope parameters are required to represent, using the harmonic model, audio signals of the tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the separated audio signal; creating replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and also creating replaced power envelope parameters by replacing a feature region for the power envelope parameters indicating the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a feature region for the power envelope parameters indicating the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind; generating a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the power envelope parameters as well as the replaced harmonic peak parameters and the replaced power envelope parameters; and adding the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind.
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15. A music audio signal generating method implemented in a computer to cause the computer to execute the steps of:
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extracting a separated audio signal including only an audio signal of each tone included in musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind, and also extracting a residual audio signal; analyzing a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; creating harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a second kind and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components based on an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, wherein the harmonic peak parameters and the power envelope parameters are required to represent, using the harmonic model, audio signals of the tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the music separated audio signal; determining whether or not the musical instrument of the first kind and the musical instrument of the second kind belong to the same category of musical instruments; creating replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a plurality of harmonic peaks included in the harmonic peak parameters stored in the replacement parameter storing section and indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and also creating replaced power envelope parameters by replacing a feature region for the power envelope parameters indicating the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a feature region for the power envelope parameters indicating the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind; generating a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the replaced harmonic peak parameters if the music instrument category determining section determines that the musical instrument of the first kind and the musical instrument of the second kind belong to the same category, or using parameters other than the harmonic peak parameters and the power envelope parameters as well as the replaced harmonic peak parameters and the replaced power envelope parameters if the music instrument category determining section determines that the musical instrument of the first kind and the musical instrument of the second kind belong to different categories; and adding the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind.
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16. A computer program for music audio signal generation installed in a computer to cause the computer to execute the steps of:
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extracting a separated audio signal including only an audio signal of each tone included in musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind, and also extracting a residual audio signal; analyzing a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; creating harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a second kind based on an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, wherein the harmonic peak parameters are required to represent, using the harmonic model, audio signals of the tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the music separated audio signal; creating replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind; generating a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the replaced harmonic peak parameters; and adding the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind. - View Dependent Claims (19)
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17. A computer program for music audio signal generation installed in a computer to cause the computer to execute the steps of:
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extracting a separated audio signal including only an audio signal of each tone included in musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind, and also extracting a residual audio signal; analyzing a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; creating harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a second kind and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components based on an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, wherein the harmonic peak parameters and the power envelope parameters are required to represent, using the harmonic model, audio signals of the tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the separated audio signal; creating replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and also creating replaced power envelope parameters by replacing a feature region for the power envelope parameters indicating the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a feature region for the power envelope parameters indicating the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind; generating a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the power envelope parameters as well as the replaced harmonic peak parameters and the replaced power envelope parameters; and adding the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind.
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18. A computer program for music audio signal generation installed in a computer to cause the computer to execute the steps of:
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extracting a separated audio signal including only an audio signal of each tone included in musical instrument sounds generated by a musical instrument of a first kind from a music audio signal including the audio signal of the musical instrument sounds generated by the musical instrument of the first kind, and also extracting a residual audio signal; analyzing a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters; creating harmonic peak parameters indicating relative amplitudes of n-th order harmonic components of each tone generated by a musical instrument of a second kind and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components based on an audio signal of musical instrument sounds generated by the musical instrument of the second kind that is different from the musical instrument of the first kind, wherein the harmonic peak parameters and the power envelope parameters are required to represent, using the harmonic model, audio signals of the tones generated by the musical instrument of the second kind and corresponding to all of the tones included in the separated audio signal; determining whether or not the musical instrument of the first kind and the musical instrument of the second kind belong to the same category of musical instruments; creating replaced harmonic peak parameters by replacing a plurality of harmonic peaks included in the harmonic peak parameters indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a plurality of harmonic peaks included in the harmonic peak parameters and indicating the relative amplitudes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind, and also creating replaced power envelope parameters by replacing a feature region for the power envelope parameters indicating the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the first kind with a feature region for the power envelope parameters indicating the temporal power envelopes of the n-th order harmonic components of each tone generated by the musical instrument of the second kind and corresponding to each tone generated by the musical instrument of the first kind; generating a synthesized separated audio signal for each tone using parameters other than the harmonic peak parameters and the replaced harmonic peak parameters if the music instrument category determining section determines that the musical instrument of the first kind and the musical instrument of the second kind belong to the same category, or using parameters other than the harmonic peak parameters and the power envelope parameters as well as the replaced harmonic peak parameters and the replaced power envelope parameters if the music instrument category determining section determines that the musical instrument of the first kind and the musical instrument of the second kind belong to different categories; and adding the synthesized separated audio signal and the residual audio signal to output a music audio signal including the audio signal of music instrument sounds generated by the musical instrument of the second kind.
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22. A music audio signal generating system comprising:
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a signal extracting and storing section configured to extract a separated audio signal including only an audio signal of musical instrument sounds generated by a musical instrument when a performer plays a musical score with the musical instrument, from a music audio signal including the audio signal of the musical instrument sounds and store the separated audio signal thus extracted for each tone included in the musical instrument sounds; a separated audio signal analyzing and storing section configured to analyze a plurality of parameters for each tone including at least harmonic peak parameters indicating relative amplitudes of n-th order harmonic components and power envelope parameters indicating temporal power envelopes of the n-th order harmonic components in order to represent the separated audio signal for each tone using a harmonic model that is formulated by the plurality of parameters and store the parameters thus created; and a musical score manipulating section configured to generate an audio signal of musical instrument sounds generated when the performer plays another musical score different from the musical score with the musical instrument by utilizing the plurality of parameters for each tone stored in the separated audio signal analyzing and storing section.
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Specification