Masao Sakama

Swing activated musical tone control apparatus

A musical-tone-control apparatus having a baton which is provided with an acceleration sensor, and which is swung by a performer is provided. The intensity of a swing of the baton is detected by the acceleration sensor, and controls the tone-generation timing and tone elements such as tone pitches, tone volumes, or tone colors. The intensity of a swing is detected after a predetermined interval has elapsed from the beginning of a swing. As a result, a delay of detection of the intensity due to the inertia of the swing is eliminated. Hence, the swings and the tone-generating timing of musical tones are in harmony, which allows the performer to enjoy a natural feeling of performance.

Musical tone generation control apparatus

A musical tone generation control apparatus provides at least one holding device (such as a grip device) having a shape which can be easily held by one hand of a person. This holding device further provides plural pressure sensors each capable of sensing a depression-pressure applied thereto, wherein these pressure sensors are arranged such that each pressure sensor can be easily touched and depressed by each finger of the hand of person. In addition, an angle detector can be provided in order to detect a bending angle at a joint portion of the person. Based on the combination of sensed depression-pressure and detected bending angle, musical tone control data for controlling an externally-provided musical tone generating apparatus is generated. This musical tone control data is used for controlling a key-on timing, a tone color, a tone pitch or other attributes of the musical tone.

Initial touch responsive musical tone control device

A musical control device comprising a position detection device whereby the position of a portion of a performers body is detected and output as a position signal, a velocity detection circuit whereby the velocity of the portion of the performers body is detected and output as velocity data based on the change in the above mentioned position signal, and a musical control signal output circuit whereby a musical control signal is generated and output based on said position signal and velocity data.

Musical tone control apparatus employing predicted angular displacement

A musical tone control apparatus detects a bending angle of a players joint portion such as a players elbow joint portion, so that a musical tone control parameter such as a tone pitch of a musical tone to be generated is controlled based on the detected bending angle. In advance, the whole angle area ranging from the fully-bent-angle to the fully-stretched-angle at the players joint portion is divided into several angle areas. Then, the present bending angle is picked up when a key-on switch is operated. If the present bending angle is increased as compared to the preceding bending angle, certain bending angle which is obtained by increasing the present bending angle is set as a future bending angle. If not, another bending angle which is obtained by decreasing the present bending angle is set as another future bending angle. In accordance with one of the angle areas to which the future bending angle will belong, musical tone control data is generated. Based on such musical tone control data, the parameter of the musical tone to be generated is controlled.