Abstract: MIDI data representing a musical performance may be altered to substitute one instrument for another, change the parameters applicable to individual instruments, and change the genre of a piece by collectively implementing predetermined changes of instruments and instrument parameters. The changes may be made in an automated real time fashion so that desired changes can be implemented during performance.

Abstract: Method for electronically reproducing the sound of an acoustic accordion, that is provided with a number of keys/buttons, which can be pressed individually so as to excite a corresponding number of reeds that are coupled with every single key/button; for electronically reproducing the sound generated by pressing each key/button, the sounds that are characteristic of each reed that is coupled with a key/button are generated individually and electronically.

Abstract: MIDI data representing a musical performance may be altered to substitute one instrument for another, change the parameters applicable to individual instruments, and change the genre of a piece by collectively implementing predetermined changes of instruments and instrument parameters. The changes may be made in an automated real time fashion so that desired changes can be implemented during performance.

Abstract: A method for handling with polyphony limits in an electronic organ, that is provided with at least one keyboard, one pedalboard, a series of organ stops, which can be turned on by a user to determine which voices are assigned to each key and to each pedal, and with a sound module, which is provided with a number of independent sound generators; when a user turns on a number of organ stops exceeding a maximum number depending on the number of independent sound generators, some organ stops are automatically turned off according to a pre-determined selection rule, in order to have a number of really operating stops that does not exceed the mentioned maximum number.

Abstract: A morphing method and an apparatus for creating musical accompaniments from a combination of musical data selected from stored patterns or tables belonging to accompaniments of different musical styles. Musical data relating to a pattern of a first style and musical data relating to a second style, as well as the desired combination of morphing degree are selected from a plurality of stored data patterns. The musical morphing of the new arrangement is created by conjointly reading in real time one or more data tracks of two or more selected patterns, relating to different families of musical instruments, and combining the read tracks in a new virtual pattern that can be stored and/or played in a musically significant manner, by making the musical measures and the temporal lengths of the tracks of the new pattern, conform with the musical measures and temporal lengths of the tracks relating to one of the patterns selected or creating the new musical arrangement.

Abstract: The electronic apparatus comprises a processing unit for classification and storage of a plurality of musical compositions, and a control device, such as a keyboard or MIDI connection, for performing of sequences of connoting musical events, to be stored and related to each single musical composition. The same control device may then be, used for performing of one or more sequences of searching musical events, in order to automatically find and subsequently read-out an associated musical composition from a storage memory of the CPU. For this purpose, the processing unit comprises program means for comparing a searching sequence with the connoting sequence of musical events, reading-out one or more of the stored musical compositions in the event of total or partial equivalence between the compared sequences of musical events.

Abstract: An electronic apparatus for the automatic composition and reproduction of musical accompaniments and/or songs.

Abstract: An automatic accompaniment device for generating chords in an electronic musical instrument. This device has a chord type information generator which indicates one of the type of chords being produced; a chord root information generator which indicates the pitch name of a root note of the chord type; and a chord bass information generator which indicates the pitch name of the lowest note of the chord type. The information from the three generators is used by an accompaniment pattern information generator to generate pattern information relating to the chord type, chord root and chord bass information. For each tone of the pattern, the pattern information contains the pitch name of a note in the chord and non chord tone of a note not present in the chord. An accompaniment pattern is generated with the accompaniment pattern information to change the pitch name of each chord tone in relation to the bass chord.

Abstract: In a parameter setting system for setting tone characters for producing musical tones in an electronic musical instrument, with respect to a plurality of tone characters having the same values as to a certain parameter, one group is made up with these plural tone characters, and parameters are stored in every group, whereby a required memory size is reduced. Further, respective tone characters are classified into a plurality of groups, and parameter setting and changing operations are executed in every group, whereby these operations are simplified.

Abstract: In an automatic accompaniment-playing apparatus, when an accompaniment pattern corresponding to a detected chord is not stored as information in a memory, an accompaniment pattern as information read from the memory in accordance with the priority level is changed so as to be suited to the detected chord. In a chord detecting apparatus, inversion modes are obtained based on an information-on-depressed-key so as to determine chords relative to the inversion modes obtained in this way. Then, the chords determined in this way are weighted, and a chord weighted at the maximum level out of the chords thus weighted is determined as one based on the above information-on-depressed-key.

Abstract: An automatic accompaniment playing device comprising a memory for storing various normal rhythm patterns, switching devices for selecting any one of said normal rhythm patterns from said memory to play the same at a predetermined tempo, a settable control unit for generating a first information regarding the magnitude of tempo variation of said predetermined tempo and for generating a second variation; the device furthermore comprises control registers for gradually changing the tempo of said rhythm patterns based upon said first and second informations provided by said control unit.