Kabushiki Kaisha Kawai Gakki Seisakusho

Kawai Musical Inst. Mfg. Co., Ltd.

Kawai Musical Instruments Manufacturing Co., Ltd.

Yamaha Hatsudoki Kabushiki Kaisha

Kawai Musical Instrument Mfg. Co., Ltd.

Kabushiki Kaisha Kawai Gakki

Hiroshi Kitagawa

Gen Izumisawa

Sadaaki Ezawa

Noriji Sakashita

Eiji Matsuda

Hitoshi Watanabe

Toshinori Matsuda

Tatsunori Kondo

Hiroshi Matsunaga

Toshio Kugisawa

Hironori Watanabe

Eiichirou Tsujii

Jiro Tanaka

Tatsuya Inaba

Masahito Kinpara

The present invention provides a vehicle, such as a motorcycle, that can sufficiently control a stagger in an extremely slow speed running state and a tumble of vehicle body in the standstill state thereof. This vehicle, such as a motorcycle includes a head pipe that supports a front wheel and a main frame that supports a rear wheel. The head pipe is movably attached to the main frame. The vehicle includes a hydraulic cylinder for shifting the centroid of the vehicle body by moving one of the head pipe and the main frame 3 relative to the other.

Vehicle having front and rear frames

A display device displaying a plurality of information sets with a simple structure, and a keyboard instrument that has a key guide device including such a display device. The display is driven at cycles shorter than those discernible by human beings, and the time ratio of ON period to OFF period for the display is changed based on control data. More specifically, the ON state and OFF state are inverted each drive cycle, or the number of cycles during which the display is in ON or OFF state can selected, or the drive cycles are cyclically changed to turn ON the display means only in a designated cycle. In this manner, the luminance of and the hues of the display can be changed relative to the continuous lighting, and a plurality of information sets can be displayed based on this change. This display device may be employed as a fingering guide display device for a keyboard instrument, and position data for keys to be depressed and other playing guide information are displayed at the same time.

Keyboard instrument with the display device employing fingering guide

Keyboard musical instrument with keyboard range indicator

According to the invention, sound data is distributed as a plurality of sound data, and the distributed sound data are combined to obtain a plurality of synthesized sound data. The synthesized sound data are sounded by a plurality of speakers, thus forming a sound image. Through combining and multiplexing of sound data in this way, stereo sounds having a sense of spatiality are generated.

Stereo system and stereo method for electronic acoustical system

A moment at which each of a plurality of pieces of sound data is generated in response to one sounding operation is controlled, and the plurality of pieces of sound data are output to different sounding units. Consequently, differences occur among moments at which sounds are radiated by the sounding units, resulting in an occurrence of differences among lengths of time taken by the sounds to reach the ears of a listener, whereby a stereophonic sound can be produced and the listener can localize a sound image. A stereophonic sound system provided with a sound generating unit for generating sound data, a generation control unit for controlling a generation of sound data in the sound generating unit in such a manner that a plurality of pieces of sound data are generated in parallel with one another in response to a sounding operation, a generation moment control unit for controlling a moment at which each piece of the sound data generated in parallel with one another is produced, and an output unit for outputting the plurality of pieces of sound data generated by the sound generating unit under control of the generation control unit, at moments controlled by the generation moment control unit, to different sounding units.

Stereophonic sound generation system using timing delay

An electronic musical instrument reads data of a musical tone from a waveform memory thereof according to pitch information input thereto, to form a tone signal containing a tone amplitude signal indicative of amplitude of the musical tone. The tone signal is passed into a plurality of signal paths to be formed into a plurality of analog tone signals. The plurality of signals paths each amplify the tone amplitude signal according to a note on/off velocity, and attenuate a plurality of modifications of the tone signal, depending on or not depending on the note on/off velocity and the pitch information on the musical tone, to generate a musical tone suitably reflecting the note on/off velocity and the pitch.

Electronic keyboard musical instrument capable of varying a musical tone

A tone signal generating apparatus, including a memory for storing wave data containing frequency components within a full band; a tone generator for reading the wave data from the memory in accordance with key ON/OFF data to generate a tone signal; a velocity generator for generating a velocity value based on key ON/OFF data; a first coefficient processor for producing a first coefficient to control the amplitude in accordance with the velocity value generated by the velocity generator; a first operator for performing an operation on the first coefficient produced by the first coefficient processor and the tone signal generated by the tone generator, a filter for extracting frequency components within a specific band from the tone signal output from the first operator to produce a first tone signal and outputting the first tone signal; a second coefficient processor for producing a second coefficient to control the amplitude in accordance with the velocity value generated by the velocity generator; and a second operator for performing an operation on the second coefficient produced by the second coefficient processor and the tone signal produced by the tone generator to obtain a second tone signal and outputting the second tone signal.

Tone signal generating apparatus for performing a timbre change by

To generate different frequencies, two accumulations are performed using the same calculation routine. This simplifies the system configuration and permits the fabrication of the whole system as a one-chip LSI.

Electronic musical instrument

This eliminates the possibility of the generation of quantizing noise in a small amplitude portion of the waveform when it is compressed to an 8-bit quantized form. The present invention is effective when a percussive or like musical tone, provided in the form of a 16-bit quantized digital form is compressed to the 8-bit quantized form.

Calculations by an envelope circuit and a waveform calculation circuit, which are principal functions of an electronic musical instrument, can be performed by the same calculation routine through use of the same general formula A=B.+-.C.times.D. Accordingly, their circuit structures are substantially simplified and the circuits can be fabricated as a one-chip large scale integrated circuit.

When a magnetic card having two recording zones is inserted into a magnetic card drive device for a read/write operation of each recording zone, a magnetic card generation indicator lights an indicator lamp after a predetermined period of time following a first insertion of the magnetic card, turns ON and OFF the lamp upon pulling out of the magnetic card from the magnetic card drive device, lights the indicator lamp again after a predetermined period of time following a second insertion of the magnetic card, and puts out the lamp upon pulling out of the magnetic card. By lighting, turning ON and OFF and putting out of the indicator lamp, it is possible to prevent mishandling of the magnetic card having two recording zones to ensure the read/write operation of the both recording zones and timely pulling out of the magnetic card from the magnetic card drive device.

Card operation indicator for magnetic card drive devices

An electronic musical instrument has internal memories for storing various panel data and a detachable present circuit having external memories of high-speed operation for storing panel data equivalent to those of the internal memories, by which panel data can be set from the outside. An advanced player can adjust and set a wide variety of tone variations through using various panel data by the external preset circuit, and a beginner who does not require such various tone variations can set panel data by the internal memories alone.

An electronic musical instrument which produces a musical sound by controlling harmonics coefficient and using computing means based on the discrete Fourier transfer. For a fundamental wave, a period function indicated by predetermined period data is generated and, for a harmonic wave, a period function of a period having a predetermined relation to the period of the fundamental wave is generated. By the period function thus obtained, a modulating waveshape memory is read out to obtain modulating data, which is multiplied by a harmonic coefficient.

In an electronic musical instrument which produces a musical sound through calculating means of a discrete Fourier algorithm by controlling harmonic coefficients, the value of a harmonic number, more than one temporally changing effect function values and a constant value are added together in a predetermined ratio; the added value is divided into a plurality of blocks; the blocks are subjected to data conversion using plural kinds of functions arbitrarily designated corresponding to the respective blocks and outputted in combination; and the outputs are each multiplied by each harmonic coefficient, thereby controlling the harmonic coefficients with time.

An electronic musical instrument of digital processing in which required musical waveshape data are calculated by a tone control device to obtain a complex musical waveshape and the complex musical waveshape is read out at a read frequency produced by a key closure to generate the selected musical note. The electronic musical instrument has a calculator for calculating a musical waveshape in association with the operation of the tone control device in a period of time independent of the period of the generated musical note, a read-out signal generator for producing a memory read-out signal based on the closure of the key switch, a period detector for detecting by one period of each channel resulting from the closure of the key switch, first and second memories for storing the musical waveshape from the calculator, the stored musical waveshape being read out by the read-out signal, and means for achieving such a control that while the first memory is read out, the musical waveshape is stored in the second memory, that the read output signal from the first memory is sequentially written in the second memory by the output signal from the period detector in synchronism with the period of the generated musical note and that after completion of reading out of a new first memory, the musical waveshape from the calculator is stored in the first memory.

Growing community of inventors

Iwata, Japan

Hiroshi Kitagawa