Yamaha Corporation

Yamaha Corportion

Hideyuki Masuda

Hideo Suzuki

Motoichi Tamura

Toshifumi Kunimoto

Masahiro Shimizu

Yoshimasa Isozaki

Yasuyuki Umeyama

Satoshi Usa

Toru Kitayama

Yuichiro Suenaga

Yutaka Tohgi

Masashi Hirano

Kenichi Miyazawa

Junji Fujii

Tsuyoshi Miyaki

Mari Yana

Iwao Higashi

Tomoyuki Funaki

Eiji Akazawa

A mute detachably attached to a brass instrument includes a fixed part and a plurality of branch pipes, each including a main pipe and an auxiliary pipe. The branch pipes are unified together and inserted into a bell pipe of a brass instrument. The fixed part is attached to the tapered portion of a bell pipe and interposed between the interior of the bell pipe and the exterior of the main pipe. The branch pipe is designed such that the auxiliary pipe is connected to the main pipe at an interconnect part, at which an air flow propagating through the main pipe is partly branched into the auxiliary pipe.

Mute for brass instrument

A wind instrument is constituted of a mouthpiece and a pipe structure including tapered/straight pipes. The pipe structure is constituted of a blow member and a branch pipe. The branch pipe is branched into a main pipe and an auxiliary pipe, which are straight pipes having openings and connected together in a branch shape. The blow member is connected to a branch point of the branch pipe. The branch pipe simulates resonance characteristic of a tapered pipe having a predetermined length, a predetermined distance between the upper base and the vertex, and a predetermined sectional area of the upper base commensurate with the sectional area of the main pipe.

Wind instrument and pipe structure thereof and a method of operating the wind instrument

An apparatus is to assist an unskilled player in playing a musical instrument by detecting the quantity of the player's manipulation against the instrument, modifying the detected manipulation quantity with reference to a recommended manipulation to a degree according to a given assistance coefficient, and actuating the instrument with the modified manipulation quantity. For a brass instrument, the apparatus comprises an embouchure sensor and a breath pressure sensor to detect the embouchure and the breath pressure of the player as he/she plays the brass instrument. The detected embouchure and breath pressure are then modified with reference to a recommended embouchure and breath pressure weighted by a given assistance coefficient. The apparatus actuates the brass instrument based on the modified embouchure and breath pressure.

Apparatus for assisting in playing musical instrument

Tone synthesis apparatus synthesizes a tone of a wind instrument generated in response to vibration of a reed contacting a lip during a performance of the wind instrument. First arithmetic operation section solves a motion equation representative of behavior of the reed in an equilibrium state with external force acting on the lip and a second motion equation representative of behavior of the lip in the equilibrium state, to thereby calculate displacement y(x), y(x) of the lip and reed in the equilibrium state. Second arithmetic operation section solves a motion equation of coupled vibration of the lip and reed with calculation results of the first arithmetic operation section used as initial values of the displacement y(x), y(x) of the lip and reed, to thereby calculate the displacement y(x, t) of the reed. Tone is synthesized on the basis of the displacement y(x, t) calculated by the second arithmetic operation section.

Tone synthesis apparatus and method

A sound source apparatus has operation blocks composed of softwares used to compute waveforms for generating a plurality of musical tones through a plurality of channels according to performance information. In the apparatus, a setting device sets an algorithm which determines a system composed of selective ones of the operation blocks systematically combined with each other to compute a waveform specific to one of the musical tones. A designating device responds to the performance information for designating one of the channels to be used for generating the musical tone. A generating device allocates the selective operation blocks to the one channel and systematically executes the allocated selective operation blocks according to the algorithm so as to compute the waveform to thereby generate the musical tone through the channel. The generating device responds to a variable sampling frequency for executing the operation blocks to successively compute samples of the waveform in synchronization to the variable sampling frequency so as to generate the musical tone, and sets the variable sampling frequency according to process of computation of the waveform by the operation blocks.

Sound source system based on computer software and method of generating acoustic waveform data

Musical sound data derived from the musical instrument () is outputted via a capture filter (), and effector filter (), a flow-rate monitoring filter (), and a renderer filter () to a speaker (). The flow-rate monitoring filter () counts a buffer number 'Cr' under rendering process among a plurality of buffersemployed in the renderer filter (), and then, feeds back this count result to the capture filter (). The capture filter () deletes, or inserts data based upon this feedback information by way of an interpolation.

Stream data processing system, stream data processing method, stream data processing program, and computer readable recording medium for storing stream data processing program

Flow velocity sensor and a length sensor are provided on or near an edge of the lip plate which the air jet from the embouchure hole impinges against. Jet flow velocity Ue at the edge and a jet-blowout-outlet-to-edge distance d are detected by the sensors. Jet transfer time &#x3c4;e is calculated by an equation of &#x3c4;e=d/Ue, and a jet traveling angle &#x3b8;e' is calculated by an equation of &#x3b8;e&#x2032;=2&#x3c0;fso1&#xd7;&#x3c4;e (where fso1 represents a frequency of a tone to be generated). When &#x3b8;e&#x2032; has decreased to &#x3c0;/2 during tone generation in a primary mode, the mode changes to a secondary mode to raise the pitch of the currently generated tone by one octave. When &#x3b8;e&#x2032; has increased to 3&#x3c0;/4 during tone generation in the secondary mode, the mode changes to the primary mode to lower the pitch of the currently generated tone by one octave.

Tone generator control apparatus and program for electronic wind instrument

A tone control device applied to an electronic wind instrument realizes an octave-changeover-blowing technique in which the same note is produced with different octaves respectively by use of the same fingering state, thus increasing controllable ranges with regard to the tone volume, tone color, and tone pitch. A plurality of flow sensors are arranged in proximity to an edge with which a jet flow caused by blowing air into a blow hole of a lip plate collides within a tube of a wind instrument controller simulating an air-reed instrument. The flow sensors are horizontally arranged to detect a jet width, thus controlling the tone volume; and the flow sensors are vertically arranged to detect a jet eccentricity or a jet thickness, thus controlling the tone color. Ascending or descending of the tone pitch by octaves is controlled by use of the flow sensor and a jet length sensor.

Tone control device and program for electronic wind instrument

A tuner apparatuscauses a user to designate a musical instrument that is to be tuned and a reference pitch that is a standard upon tuning, by a process at a setting portion. A pitch detecting portiondetects a pitch of a performed note inputted via a microphoneand input portion. A target note specifying portiondefines a note name, which is positioned nearest to the performed note in a predetermined temperament (e.g., 12-note equal temperament), as a target note based upon the detected pitch of the performed note and the inputted reference pitch. Then, a calculating portioncalculates a difference between the pitch of the performed note and the pitch of the target note, and a display control portioncauses the display deviceto display the calculated difference. Further, the display control portionconverts the target note into a note name written in a score relating to the musical instrument to be tuned by using a transposition parameter relating to the musical instrument to be tuned that is stored in the storage portionand set by the setting portion, and causes the display deviceto display a staff in which a note corresponding to the note name written in a score is written.

Tuner apparatus for aiding a tuning of musical instrument

In an instrument performance learning apparatus, a storage section stores model performance waveform data representing a time series of individual performance sounds of a model performance. An input section inputs real performance waveform data representing a time series of individual performance sounds of a real performance. A pitch graph display control section detects each pitch of each individual performance sound from the stored model performance waveform data and from the inputted real performance waveform data, and displays a pitch graph representing transitions of the detected pitches. An amplitude envelope graph display control section detects each amplitude level of each individual performance sound from the model performance waveform data and from the real performance waveform data, and displays an amplitude envelope graph representing transitions of the detected amplitude levels, such that the amplitude envelope graph has a time axis common to that of the pitch graph while the amplitude envelope graph is located in an area of the display device which does not overlap with another area of the display device where the pitch graph is located.

Instrument performance learning apparatus using pitch and amplitude graph display

Performance event data designating rendition style modules are supplied in order of time. When a given performance event data at a given time is to be processed in accordance with the supplied performance event data, another performance event data related to one or more events, following the given performance event data, is obtained in advance of a predetermined original time position of the other performance event daata. Control data corresponding to a rendition style module designated by at least one of the given performance event data and the other performance event data obtained in advance is generated on the basis of the given and the other performance event data, and a waveform corresponding to the designated rendition style module is synthesized on the basis of the control data. Characteristic of at least one of preceding and succeeding rendition style modules is modified on the basis of trailing end information of the preceding rendition style module and leading end information of the succeeding rendition style module. When rendition style designation data, including information designating a rendition style module and parameters for controlling the rendition style module, is lacking in a necessary parameter, the lacking parameter is filled with a predetermined standard parameter.

Waveform production method and apparatus

A fingering guide displaying apparatus is to guide a player or a learner how to finger wind musical instruments in playing. As most of wind musical instruments are transposing instruments, the fingering patterns are indicated for the respective notes on the music scores notated in the respective tonalities which are unique to the respective instruments. The apparatus stores a fingering pattern database representing fingering patterns for the respective available notes of various transposing instruments in the respective instrument tonalities, and a transposition value database representing, for each of the instrument tonalities, the pitch difference between the instrument tonality and the reference tonality. When music playing data expressed in the reference tonality are used for playing a transposing instrument, the playing data are converted to express the notes in the instrument tonality using the pitch difference value, and fingering patterns are also indicated in the instrument tonality.

Fingering guide displaying apparatus for musical instrument and computer program therefor

Style-of-rendition identification information representing a style of rendition of a performance tone is received, and reference is made to a predetermined table on the basis of the received style-of-rendition identification information to thereby obtain, from the table, style-of-rendition module data corresponding to the received style-of-rendition identification information. Waveform is produced on the basis of the obtained style-of-rendition module data. The style-of-rendition module data is data representing behavior of a waveform to be produced in accordance with a style of rendition and may include data representing characteristic behavior of vectors that control the waveform to be reproduced. The behavior of the waveform can be defined by various waveform factors. The vectors include, for example, vectors of various fundamental waveform factors for producing the waveform, such as a waveform shape, pitch, amplitude and time axis.

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Hamamatsu, Japan

Hideyuki Masuda