[Problem] To provide an arpeggiator capable of suppressing sound muddiness caused by simultaneous production of sounds in a multi-arpeggiator capable of automatically playing arpeggios in a plurality of performance parts, and a program provided with the function of the arpeggiator. [Solution] A synthesizer 1 decreases velocity in velocity memory 12c in accordance with a duck rate when the time of sound production for a sound production part is the same as the time of sound production for a duck part, and at that time of sound production, a note number of the duck part is the same as a note number of a duck note. This makes it possible to suppress muddiness of output sound, since an increase in output level is suppressed even when a plurality parts produce sound at the same time.

One or more assigners selecting a note to be sounded according to operation state of plural controls corresponding respectively to notes are provided, it is decided for each of the assigners whether or not to select a note to be sounded in response to a key-off operation of any of the controls, and when a key-off operation of any of the controls is detected, the assigner which is decided to select a note to be sounded, is instructed to select a note to be sounded according to operation state of the controls after the detection of the key-off operation.

One or more assigners selecting a note to be sounded according to operation state of plural controls corresponding respectively to notes are provided, it is decided for each of the assigners whether or not to select a note to be sounded in response to a key-off operation of any of the controls, and when a key-off operation of any of the controls is detected, the assigner which is decided to select a note to be sounded, is instructed to select a note to be sounded according to operation state of the controls after the detection of the key-off operation.

When a harmony function is on state, a generator determines a chord based on one or more notes of depressed keys in a chord kea area, automatically generates one or more additional notes having pitches which harmonizes the pitch of the note of the depressed key in a performance key area according to the determined chord, and inputs the “note of the pressed key in the performance key area+additional notes” to an assignment controller. The assignment controller assigns plural parts (timbres) to the inputted notes, and sounds the notes in timbres of the plural parts according to the assignment. That is, tone generation assignment process is performed regarding not only notes according to performance operation by a user but also automatically generated additional notes.

When a harmony function is on state, a generator determines a chord based on one or more notes of depressed keys in a chord kea area, automatically generates one or more additional notes having pitches which harmonizes the pitch of the note of the depressed key in a performance key area according to the determined chord, and inputs the “note of the pressed key in the performance key area+additional notes” to an assignment controller. The assignment controller assigns plural parts (timbres) to the inputted notes, and sounds the notes in timbres of the plural parts according to the assignment. That is, tone generation assignment process is performed regarding not only notes according to performance operation by a user but also automatically generated additional notes.

A non-transitory computer-readable storage medium stored with an automatic music arrangement program, and an automatic music arrangement device are provided. An outer voice note having a highest pitch among notes of which sound production start times are approximately the same in a melody part acquired from musical piece data is identified. A melody part acquired by deleting inner voice notes of which sound production starts within a sound production period of the outer voice note and of which pitches are low from the melody part is generated. Candidate accompaniment parts in which root notes of chords of chord data of the musical piece data are arranged to be produced at sound production timings thereof for each pitch range acquired by shifting a range of pitches corresponding to one octave by one semitone at each time are generated, and an accompaniment part is selected among them.

A sound control device includes a plurality of setting interfaces. Each of the setting interfaces includes a parameter operator, a communication interface performing control change message transmission and reception, a generation unit generating the control change message, a designation unit designating validity or invalidity of generating respective sound signals for the plurality of setting interfaces, a mode selection unit selecting a control mode of the communication interface, and a control unit. The control unit controls such that, when a first mode is selected, the control change message generated by the generation unit for a setting interface which is designated as valid among the plurality of setting interfaces is not transmitted through the communication interface, and the control change message generated by the generation unit for a setting interface which is designated as invalid among the plurality of setting interfaces is transmitted through the communication interface.

A sound control device includes a plurality of setting interfaces. Each of the setting interfaces includes a parameter operator, a communication interface performing control change message transmission and reception, a generation unit generating the control change message, a designation unit designating validity or invalidity of generating respective sound signals for the plurality of setting interfaces, a mode selection unit selecting a control mode of the communication interface, and a control unit. The control unit controls such that, when a first mode is selected, the control change message generated by the generation unit for a setting interface which is designated as valid among the plurality of setting interfaces is not transmitted through the communication interface, and the control change message generated by the generation unit for a setting interface which is designated as invalid among the plurality of setting interfaces is transmitted through the communication interface.

An electronic musical instrument includes a sound source LSI to generate a musical sound using a RAM that retains waveform data that has been selectively read from a plurality of waveforms stored in a large-capacity flash memory, and smoothly executes transfer of additional waveform data from the flash memory to the RAM when the requisite waveform data is not retained in the RAM during the performance. Performance data is generated by a sequencer, a prescribed delay time is applied to the performance data by an event time generator and an event delay buffer so as to provide for sufficient time for the transfer of the additional waveform if such transfer is needed. A musical sound is generated by an event buffer and a sound source driver on the basis of the delayed performance data.

Methods and devices for enabling authentication may include a first stage in which a first electronic device of the first entity communicates with a second electronic device of the second entity via a telecommunications network. During the first stage, the first electronic device generates a first token and transmits it from the first electronic device to the second electronic device via the network; and the second electronic device generates a third token and transmits the third token to the first electronic device via the network. During a second stage, authenticating a first non-authenticated entity as being the second entity as a function of a second token contained in a first portable electronic device of the first non-authenticated entity occurs; and authenticating a non-authenticated entity as being the first entity as a function of a fourth token contained in a second portable electronic device of the second non-authenticated entity also occurs.