In a digital type electronic musical instrument in which basic frequency is cumulatively counted and a musical tone waveshape is read from a memory by the resultant output of the cumulative counting, a desired vibrato effect is produced by digitally frequency-modulating the basic frequency. Vibrato information for effecting the frequency-modulation is produced from a vibrato code obtained by counting a clock pulse and a vibrato depth signal and has contents which change as time elapses. The freq...

A structure for connecting a ski binding clamp to a ski, wherein one or more engagement members secured to the bottom part of a ski binding clamp are inserted into holding cavities of a corresponding number in a bracket secured to the top surface of a ski, after which the ski binding clamp is caused to move within the same horizontal plane as that of the ski, thus engaging the engagement members attached underneath thereof with engaging means provided in the bracket.

A keyboard arrangement in electronic musical instrument comprising playing keys movable to cover a predetermined distance in normal play and also being able to move farther in excess of said distance in accordance with the pressure applied to the keys, a movable arm arranged at position corresponding to each key at its depressed position, and a sensor means provided for said arm to detect the amount of the excessive distance covered by the movable arm and the speed thereof to generate a signal t...

An electronic musical instrument capable of producing a multi-system tone source effect which is an effect providing a musical tone with naturalness and resulting from simultaneous playing of a tone of a proper pitch and a tone of a pitch slightly different from the proper pitch. The inventive electronic musical instrument produces this effect with a smaller number of tone source devices than the number of systems. Composite musical tone waveshape amplitudes achieving the multi-system tone sourc...

This invention provides an electronic musical instrument comprising a keyboard circuit for producing a pitch determining voltage signal representing the note of an operated key, a voltage controlled oscillator for producing a tone signal having a tone pitch determined by the pitch determining voltage signal, and a voltage controlled lowpass filter for imparting a desired tone color to the tone signal. The voltage controlled lowpass filter is responsive to the pitch determining voltage signal fro...

By the inclusion, by weight, of 1-5% of aluminium, as the essential additive, in a 78 permalloy (an Fe-Ni alloy) having a basic composition comprising the two essential elements, i.e. 75-82% of nickel and 5-24% of iron, the hardness of this alloy is improved without deteriorating the magnetic characteristic including magnetic permeability of the alloy. Furthermore, molybdenum, copper, chromium, and niobium may be added together with the aluminum in a suitable combination and amount to enhance bo...

In a digital type electronic musical instrument in which frequency information corresponding to a depressed key is cumulatively counted and a musical tone waveshape is read from a memory by the resultant output of the cumulative counting, modified frequency information is produced by adding to or subtracting from said frequency information second frequency information represented by a predetermined frequency difference. A tone of a pitch which is slightly different from a normal pitch is generat...

An automatic rhythm performance system is provided with a rhythm pattern changing circuit comprising a white noise source and a sample hold circuit which samples the output of the white noise source in response to a pulse signal occurring at the beginning of every measure of a rhythm to produce a sustained voltage of a sampled value which will be different for every measure. The sample hold circuit voltage is applied to a rhythm selecting circuit to modify the preselected pattern of the rhythm.

A direct-coupled full stage cascaded amplifier comprising an output stage, a drive stage and a predrive stage. The output stage is composed of an SEPP (single-ended push-pull) circuit of a plurality of FET's having a certain conductivity type channel. The drive stage is composed of a differential amplifier circuit of a plurality of FET's having a channel of a conductivity type same as that of the FET's in the output stage. The pre-drive stage is composed of another differential amplifier circuit...

A push-pull amplifier circuitry comprising: a first and a second FET (abbreviation of field effect transistor which will be used hereinafter) of an n-channel type, a third FET of a p-channel type with its gate and source connected to the gate of said first FET and to the source of said second FET respectively, a fourth FET of a p-channel type having a gate and a source connected to the gate of said second FET and to the source of said first FET, a positive voltage supply connected to the drain o...