Casio Computer Co., Ltd.

Hiroko Okuda

Junichi Minamitaka

Shigeru Kafuku

Keiichi Sakurai

Hiroshi Iwase

Atsushi Shibutani

Toshihiko Otsuka

Hiroshi Yoshimura

Ryutaro Hayashi

Nobuyuki Mochinaga

Atsushi Inoshita

Makoto Takenaka

Chisato Nakamura

Takashi Umemura

A method implemented by a processor includes

Method implemented by processor, electronic device, and performance data display system

For example, provided is an information processing device with which the entire performance can be felt really visually. The information processing device TB according to the present invention includes a processor performing a reception process of receiving input of performance information including pitch information, a first image output process of outputting a first image according to the received performance information, a performance determination process of determining at least any of tonality, a chord type, and a pitch name on the basis of the received performance information, and second image output process of outputting a second image according to a result determined in the performance determination process.

Information processing device, information processing method, storage medium, and electronic musical instrument

An electronic wind instrument according to one aspect of the present invention includes a plurality of performance keys for specifying pitches, a breath sensor which detects at least a breath input operation, and a controller (CPU), wherein the controller (CPU) selectively switches between a first mode of outputting first sound waveform data generated on the basis of the breath input operation and operation of at least one performance key from among the plurality of performance keys, and a second mode of, when the breath input operation is detected, outputting second sound waveform data based on musical piece data regardless of whether operation of the at least one performance key is detected or is not detected.

Electronic wind instrument, method of controlling electronic wind instrument, and storage medium storing program for electronic wind instrument

An automatic key adjusting apparatus is provided, which determines keys on an input melody in real time and adjusts the determined keys in non real time to obtain accurate keys, thereby enhancing accuracy of placement of chords. The automatic key adjusting apparatus is provided with a keyboard for playing a melody of a musical piece. CPU judges keys on the melody in real time based on a history of pitches of the played melody of the musical piece, and adjusts the result of the key judgment in non real time after the melody of the musical piece is played.

Automatic key adjusting apparatus and method, and a recording medium

An automatic accompaniment apparatus is provided. The apparatus is provided with a music database having music data of plural musical pieces recorded therein, the music data including melody information and chords corresponding to the melody information, a performance recording unit for recording performance information for giving an instruction of generating a musical tone in response to performed operation, a music searching unit for searching for music data including melody information corresponding to the performance information in the performance recording unit through the music database, a chord judging unit for judging chords from the performance information in the performance recording unit, a chord selecting unit for selecting one of the chords included in the music data found by the music searching unit and the chords judged by the chord judging unit, and an automatic accompaniment unit for giving an instruction of generating accompaniment in accordance with the selected chords.

Automatic accompaniment apparatus, a method of automatically playing accompaniment, and a computer readable recording medium with an automatic accompaniment program recorded thereon

A performance-information processing apparatus processes performance information entered thereto. When the performance information is entered in a time interval between (i) a starting time point, at which performance information of one note starts entering and (ii) a first timing, that is a certain time after another performance information of a note has been entered after the performance information of said one note was entered, a tempo determining unit determines a tempo of the performance information, based on the performance information entered in the time interval, and a meter determining unit which determines a meter of the performance information based on the tempo determined by the tempo determining unit.

Performance information processing apparatus, performance information processing method, and program recording medium for determining tempo and meter based on performance given by performer

A manipulator information obtaining unit obtains at least a note name corresponding to a manipulator manipulated. A storage device includes a register configured to store at least possible note names, note names in a history of manipulators manipulated, and key candidates, and a first table configured to store diatonic scale notes for each of the key candidates. A key determination unit compares the note names in a history of manipulators manipulated with the diatonic scale notes for each of the key candidates and determines whether there is a key candidate in which all of the note names in the history of the manipulators coincide with any of the diatonic scale notes of the key candidate, thereby determining a key of a musical composition played by the manipulation of the manipulators, and storing the determined key in the register.

Key determination apparatus and storage medium storing key determination program

In response to depressing operation of a key in a melody key rangeof a keyboard, CPUdecides a pitch of musical-tone data to be produced. Concerning the depressing operation on the melody key range, CPUspecifies a jins or a predetermined temperament from maqam data or temperament-type data based on depressed keys in an accompaniment key rangeof the keyboard. Further, CPUspecifies a composing tone corresponding to the depressed key in the melody range, and gives a sound sourcean instruction of generating musical-tone data having a pitch of the composing tone.

Electronic musical instrument and recording medium

CPUdecides a current melody tone CM relating to a key depressed at a the leading position of a current beat and a previous melody tone PM relating to a key depressed at the leading position of a beat coming directly before the current beat, based on time information, in particular, beat information, controlling progress of automatic accompanying data in operation in a melody sequence progressing in response to manipulation of a keyboard. Further, CPUperforms a chord name deciding process to decide a current chord name, based on the decided current melody tone, previous melody tone, and a previous chord name PreCH, or a chord name at the previous beat. When deciding a melody tone, CPUdecides the current melody tone CM and the previous melody tone PM based on what number the current beat is in a measure.

Automatic accompanying apparatus and computer readable storing medium

An automatic melody composer composes a melody on a phrase by phrase basis. A phrase database storage stores data of many and various phrases. A generating index database storage stores records of music generating index. Each record describes or indicates appropriate phrases in the phase database and how melody is modified or developed in moving from one musical time unit to another. A decoder selects an index record from the generating index database, retrieves, from the phrase database, phrase components according to the index record, and combines them into a phrase. Thus, the composer quickly provides a natural melody formed with a chain of phrases without requiring complicated data processing.

Automatic melody composer

A tonality extractor analyzes a chord progression (CP) to determine an available pitch class set (PCS) at each chord time of CP using stored musical knowledge base. The available PCS is determined differently depending on musical situations. A resultant PCS succession is most accurate and assures a natural stream of musical tonality free of a spurious modulation. An automatic accompaniment apparatus utilizes the tonality extractor for desired accompaniment performance. A modulation compensator avoids generation of a pitch range shift in the accompaniment line at the time of modulation (change of key). A style-grouped pitch change table in combination with a style-grouped reference accompaniment pattern memory optimizes accompaniment pitch contents to respective musical styles while requiring only a small storage space. An accompaniment pitch forming device using stored accompaniment note index data and a pitch table linked to the note index and tonality data controls accompaniment pitch line so as to vary in a pleasing way depending on tonalities.

Music apparatus for determining tonality from chord progression for

A tonality determining apparatus provides a tonality analysis of a chord progression. The apparatus includes a chord function knowledge database storing musical knowledge of evaluating a function of each chord in the chord progression. A keynote and function progression extractor determines a keynote and function of each chord in the chord progression from a chord progression input device in accordance with the function knowledge database. From the extractor's results a tonality data generator produces tonality data defining a pitch class set available in each chord time interval. The tonality determining apparatus is applied to an accompaniment apparatus for playing an accompaniment with a desired tonality.

Apparatus for determining tonality for chord progression

In preparing a musical tone by synthesizing tone waveforms from a plurality of tone waveform generators, touch response data representing parameters such as key depressing speed or string picking force is generated from a touch response data preparing unit. The obtained touch response data can be used to affect the musical tone. Touch curves can be independently designated to these tone waveform generators with a manually operating unit. A weighting device for modifying a touch curve by selecting loudness level and sensitivity is provided so that various touch curves can be attained from a single touch curve for weighting the musical tone.

Electronic musical instrument with touch response function

A plurality of different kinds of rhythm playing pattern data corresponding to each of the different rhythm sounds being used to play specified rhythms is stored in a rhythm pattern memory section (1). When a particular kind of rhythm is being played automatically, one particular kind of rhythm is selectively designated from a plurality of kinds of rhythms by the operation of the rhythm kind selecting unit (21f). Then, a particular kind of rhythm playing pattern data corresponding to the selected particular kind of rhythm is selected from a plurality of kinds of rhythm playing pattern data preset in the rhythm pattern memory section (1) corresponding to each of the rhythm sounds by the operation of the pattern selection section (2,21,21a-21e). According to this arrangement, since a plurality of rhythm playing patterns are preset to each of the rhythm sounds for each different kind of rhythm, an automatic rhythm play using a selected one of a plurality of rhythm playing patterns can be performed for each rhythm sound by the selecting operation of the pattern selection section (2,21,21a-21e), though the same kind of rhythm is automatically played with the same rhythm sound.

Automatic rhythm playing apparatus having plurality of rhythm patterns

When the fill-in key and synchro start key are operated, an output of an inverter causes an AND gate to inhibit the resetting of a flip-flop by an output of a bar clock generator. In consequence, a fill-in rhythm is sounded continuously with a pattern selector driven by the set output of the flip-flop. When an accompaniment play key is operated at a desired instant in this situation, an output of a key depression detection circuit is fed through an AND gate and an OR gate to the reset input terminal of the flip-flop. As a result, the address of a ROM designated by the pattern selector, is changed to start sounding of normal rhythm.

Growing community of inventors

Kokubunji, Japan

Hiroko Okuda