Roland Corporation

Atv Corporation

Roland Kabushiki Kaisha

Ikutaro Kakehashi

Tsutomu Tanaka

Tsuneo Higuchi

Electronic percussion instrument

To provide an electronic percussion that ensures reproducing further faithful musical sound relative to a hitting operation by a player. An electronic percussionincludes a thin plate-shaped headat an opening formed into a shape of a cylinder with a closed bottom and respective pressure sensorand signal processing deviceon a bottom. A surface of the headconstitutes a struck surface. The headincludes a vibration sensoron the back surface. The vibration sensorincludes a pressure sensor pressing bodyon the pressure sensorside. The pressure sensor pressing bodyis formed to have a tapered shape whose outer diameter gradually thins from the vibration sensorside to the pressure sensorside. The signal processing deviceoutputs a musical sound signal representing a musical sound using respective detection signals of the vibration sensorand the pressure sensor

Electronic percussion

An effect adding system for use in Karaoke performance applications is provided which, when one person sings, singing with different height from that of the actual singing, or singing with different timing from that of the actual singing, is automatically carried out to yield, in part, the same effect as if a chorus, duet, round, or the like is performed by a plurality of persons. In one embodiment, the effect adding system accomplishes this by means of pitch conversion and/or delay of the aural input signal in response to pitch conversion and/or delay information deriving from stored performance information for a particular musical composition.

Effect adding system

An electric guitar has a band pin (1, 2) for its shoulder band. Force applied to the band pin (1, 2) through the shoulder band is converted to an electric signal by a converting means (10, 100). An effect of output sound of the electric guitar is controlled in response to the electric signal.

Sound effect control device for an electric guitar

A device for producing a chorus effect for an electronic musical instrument. The device has two sets of parallel time delay modulating circuits with each set having two circuits therein and the circuits being adapted to have the musical tones from the electronic musical instrument supplied thereto. Saw-tooth wave generators are coupled to the respective time delay modulating circuits for supplying the respective time delay circuits in each set with a saw-tooth modulating wave having a gradually increasing slope and a sharply decreasing slope, the saw-tooth wave supplied to one circuit in the set having the gradual slope increasing in the positive direction and the saw-tooth wave supplied to the other circuit in the set having the gradual slope increasing in the negative direction so that the waves in the set have opposite polarities, and the saw-tooth waves for one set of modulating circuits being 180.degree. out of phase with the saw-tooth waves for the other set of time delay modulating circuits. A plurality of amplitude modulating circuits are provided, one coupled to each of the time delay modulating circuits, and modulating wave generators are coupled to the amplitude modulating circuits for supplying modulating waves to the amplitude modulating circuits for making the output from the respective time delay modulating circuits a minimum when the direction of the saw-tooth waves for the corresponding time delayed modulating circuits is sharply decreasing. Mixing means mixes the outputs of the amplitude modulating circuits.

Device for producing chorus effects

A keyboard type electronic musical instrument which is provided with a keyboard having an arrangement of keys corresponding to an arrangement of letter names based on the scale of the equal temperament of 12 degrees, a sound signal generator for generating sound signals of frequencies defined for the letter names, first and second gate circuit means having gate circuits respectively supplied with the sound signals from the sound signal generator, a first mixer for mixing the outputs from the gate circuits of the first gate circuit means, a frequency multiplier circuit for frequency multiplying the output from the gate circuits of the second gate circuit means, and a second mixer for mixing the outputs from the frequency multiplier circuit and the first mixer. The sound signals supplied to the gate circuits of the second gate circuit means have higher or lower frequencies than the sound signals supplied to the corresponding gate circuits of the first gate circuit means. The frequency multiplying ratio of the frequency multiplier circuit is defined to have the value of the ratio between a frequency defined for the letter name of the natural scale corresponding to the letter name of the sound signal supplied to one of the gate circuits of the first gate circuit means and a frequency defined for the letter name of the natural scale corresponding to the letter name of the sound signal supplied to one of the gate circuits of the second gate circuit means.

Keyboard type electronic musical instrument

A device for producing a chorus effect in an electronic musical instrument. An electronic delay circuit and a non-modulating amplifier means are coupled in parallel and the outputs are mixed in a mixing amplifier. A carrier oscillator is coupled to the delay circuit for controlling the time delay of the delay circuit according to the frequency of its output, and normally oscillates at a relatively high frequency in the range of 80-100 KHz. A modulation signal generator is coupled to the carrier oscillator for frequency modulating the carrier oscillator toward lower oscillating frequencies, and a control signal generator is coupled between the input to the delay circuit and the modulation signal generator for detecting the musical tone signal input to the delay circuit and producing a control signal only when a musical tone signal input is detected. The delay time of the electronic delay circuit is thus modulated only when a musical tone signal input exists and when the carrier oscillator is not subjected to frequency modulation when no musical tone signal exists, the noise in the delay circuit is not modulated and any jarring effect in the output thereof is substantially eliminated.

Device for producing a chorus effect

An electrical string-instrument having a plurality of strings, a support member stretching the strings, electromechanical transducers respectively corresponding to the strings, a plurality of gate means for gating the outputs from the electromechanical transducers or signals based thereon, and gate signal generating means.

Electrical string-instrument

An arpeggio circuit for an electronic keyboard instrument has means for generating a desired sweep voltage which is continuously varied, a voltage control type oscillator connected to the generator for generating a sweep frequency which is varying in proportion to the sweep voltage, a plurality of pulse generating means, one for each note of the keyboard instrument, and each having a series connected resonance circuit means and pulse forming means for forming a pulse in response to the output from said resonance circuit means. The pulse generating means are connected to the oscillator in parallel with each other. Tone generator means is coupled to the outputs of the respective pulse generating means for generating tone signals in response to the outputs of the pulse generating means, and arpeggio producing means is coupled to the pulse generating means for cancelling the output of the resonance circuit means for all of the pulse generating means other than the pulse generating means corresponding to the notes of the arpeggio.

Growing community of inventors

Osaka, Japan

Ikutaro Kakehashi