Yamaha Corporation

Takeshi Sakai

Kawakami Fukushi

Satoshi Usa

Hiroyuki Iwase

Takuro Sone

Fukushi Kawakami

Ryokichi Yamazaki

Hitoshi Akiyama

Miki Arai

An information providing system includes a sound emission device for emitting, as sound wave, identification information modulated into a sound signal, an identification information resolution server including a mapping table in which the identification information, valid time information and the address information of a content are stored to be associated, and a mobile terminal device for transmitting the identification information demodulated from a picked-up sound wave to the identification information resolution server thereby obtaining address information and accessing the content using the obtained address information. When received the identification information from the mobile terminal device, the identification information resolution server returns the address information of a corresponding content to the mobile terminal device when the time information is within a valid time.

Information providing system, identification information resolution server and mobile terminal device

A musical performance processing apparatus that provides better assistance for student's practice. The apparatus includes a main unit in which music data including performance information of right- and left hand parts is stored, and a performance terminal having a keyboard divided into two key ranges by a split point. Each key range is set as a tapping or normal performance key range. The main unit generates a musical tone when input with performance information generated by depression of a key in the normal performance key range, and automatically reproduces performance information of designated part of music data for the number of beats corresponding to key depression, when input with performance information generated by depression of a key in the tapping performance key range. Sounding is stopped, if there is a deviation between a tempo of teacher's tapping performance and timing of student's performance.

Musical performance processing apparatus and storage medium therefor

There is provided a method for measuring a sound absorption power of a theater chair with a human being seated thereon. The method includes steps of disposing a theater chair which is an object of measurement in a measuring environment; disposing a dummy sound absorber in the theater chair, the dummy sound absorber having a shape in which it is in contact with the theater chair, a sound absorption power and a chair pressing force in such a manner that the dummy sound absorber simulates a human being seated on the theater chair; causing changes in the theater chair which changes are substantially equivalent to a change in the state of the theater chair caused when a human being gets seated on the chair and a change in the sound absorption power of the theater chair caused by seating of the human being thereon; and measuring the sound absorption power of the theater chair. There is also provided a dummy sound absorber used for carrying out this method.

Method for measuring sound absorption power of a theater chair with a human being seated thereon and a dummy sound absorber

There is provied a method for measuring a sound therefor power of a theater chair with a human being seated thereon. The method includes steps of disposing a theater chair which is an object of measurement in a measuring environment; disposing a dummy sound absorber in the theater chair, the dummy sound absorber having a shape in which it is in contact with the theater chair, a sound absorption power and a chair pressing force in such a manner that the dummy sound absorber simulates a human being seated on the theater chair; causing changes in the theater chair which changes are substantially equivalent to a change in the state of the theater chair caused when a human being gets seated on the chair and a change in the sound absorption power of the theater chair caused by seating of the human being thereon; and measuring the sound absorption power of the theater chair. There is also provided a dummy sound absorber used for carrying out this method.

Dummy sound absorber representing a seated human for measuring sound absorption power of a theater chair

Dummy sound absorber representing a seated human for measuring sound

A chair includes a main body with a seat, openings formed in the greater part of the lower surface of the seat, a sound absorbing structure contained in the seat while facing the openings, and a louver having a series of openings defined with a number of slats that may be turned for opening and closing. The louver is located in front of the series of openings. When the seat is unoccupied, the slats of the louver are turned for opening. When the seat is occupied, the slats are turned for closing. The chair is adequate for concert halls or theaters.

Growing community of inventors

Hamamatsu, Japan

Takeshi Sakai