A method is disclosed, the method comprising the steps of identifying a first real object in a mixed reality environment, the mixed reality environment having a user; identifying a second real object in the mixed reality environment; generating, in the mixed reality environment, a first virtual object corresponding to the second real object; identifying, in the mixed reality environment, a collision between the first real object and the first virtual object; determining a first attribute associated with the collision; determining, based on the first attribute, a first audio signal corresponding to the collision; and presenting to the user, via one or more speakers, the first audio signal.

The present disclosure relates to a method of automatically preparing a MIDI file based on a target MIDI file comprising respective note information about each of a plurality of target notes and a source MIDI file comprising respective note information about each of a plurality of source notes. Each note information comprises pitch information defining a pitch of the note. The method comprises ranking the plurality of target notes based on the pitch of each target note. The method also comprises, for each of the ranked target notes, removing the pitch information from the note information of the target note. The method also comprises, for each of the ranked target notes, replacing the removed pitch information with pitch information of a corresponding source note, whereby the target note has the same pitch as the corresponding source note, forming a plurality of new notes of a new MIDI file.

A musical sound that is rich in amusement can be provided. A musical sound control device includes: a plurality of operators; a musical sound processing part configured to repeat a process of controlling a musical sound in each of a plurality of steps in accordance with control information set by the plurality of operators; and a control part configured to stop an operation of the musical sound processing part in a case in which the process of controlling a musical sound of the plurality of all the steps using the musical sound processing part has gone through one cycle in a case in which a predetermined condition is satisfied.

A method is disclosed, the method comprising the steps of identifying a first real object in a mixed reality environment, the mixed reality environment having a user; identifying a second real object in the mixed reality environment; generating, in the mixed reality environment, a first virtual object corresponding to the second real object; identifying, in the mixed reality environment, a collision between the first real object and the first virtual object; determining a first attribute associated with the collision; determining, based on the first attribute, a first audio signal corresponding to the collision; and presenting to the user, via one or more speakers, the first audio signal.

An automatic musical performance device includes: a storage part, storing musical performance patterns; a musical performance part, performing musical performance on the basis of the musical performance patterns stored in the storage part; an input part, to which musical performance information is input a setting part, setting a mode as to whether to switch the musical performance; a selection part, selecting a musical performance pattern estimated to have a maximum likelihood among the musical performance patterns stored in the storage part on the basis of the musical performance information input to the input part when a mode of switching the musical performance by the musical performance part is set by the setting part; and a switching part, switching at least one musical expression of the musical performance pattern played by the musical performance part to a musical expression of the musical performance pattern selected by the selection part.

A method is disclosed, the method comprising the steps of identifying a first real object in a mixed reality environment, the mixed reality environment having a user; identifying a second real object in the mixed reality environment; generating, in the mixed reality environment, a first virtual object corresponding to the second real object; identifying, in the mixed reality environment, a collision between the first real object and the first virtual object; determining a first attribute associated with the collision; determining, based on the first attribute, a first audio signal corresponding to the collision; and presenting to the user, via one or more speakers, the first audio signal.

The present invention provides a method for processing music audio data, comprising the steps of providing input audio data representing a first piece of music containing a mixture of predetermined musical timbres, decomposing the input audio data to generate at least a first audio track representing a first musical timbre selected from the predetermined musical timbres, and a second audio track representing a second musical timbre selected from the predetermined musical timbres, applying a predetermined first audio effect to the first audio track, applying no audio effect or a predetermined second audio effect, which is different from the first audio effect, to the second audio track, and obtaining recombined audio data by recombining the first audio track with the second audio track.

The present invention provides a method for processing music audio data, comprising the steps of providing input audio data representing a first piece of music containing a mixture of predetermined musical timbres, decomposing the input audio data to generate at least a first audio track representing a first musical timbre selected from the predetermined musical timbres, and a second audio track representing a second musical timbre selected from the predetermined musical timbres, applying a predetermined first audio effect to the first audio track, applying no audio effect or a predetermined second audio effect, which is different from the first audio effect, to the second audio track, and obtaining recombined audio data by recombining the first audio track with the second audio track.

An environment awareness system includes a memory and first and second modules. The memory is configured to store environmental data, one or more music composition templates, and one or more maps, where the environmental data is indicative of at least one of a state, condition, or change in an environment in which the environment awareness system is located. The first module is configured to receive and store the environmental data in the memory. The second module is configured to: based on the one or more music composition templates and the one or more maps, convert the environmental data to a music signal including modifying variables in the one or more music composition templates based on the environmental data; and based on the music signal, play out a musical composition via an audio system to audibly indicate the at least one of the state, condition, or change in the environment.

An electronic musical instrument includes: a plurality of keys that include at least first keys corresponding to a first pitch range and second keys corresponding to a second pitch range; and at least one processor, configured to perform the following: causing a syllable position in a phrase that is digitally synthesized for output to be not advanced no matter how the second keys in the second pitch range are operated while a key operation in the first pitch range is being continuously maintained; and causing the syllable position to advance every time a key operation in the second pitch rang is performed while none of the first keys in the first pitch range are being operated.