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"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 7067731 | Sound source circuit and telephone terminal using same A sound source circuit is provided for a telephone terminal to reproduce chorus-effect imparted musical tones as incoming call sound or hold sound. Herein, original musical tone data ω c1 are slightly modified in pitches to produce musical tone data ω c2... | 06/27/2006 |
| 7002068 | Method for making electronic tones close to acoustic tones, recording system for the acoustic tones, tone generating system for the electronic tones A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signa... | 02/21/2006 |
| 6946594 | Method for reproducing the sound of an accordion electronically Method for electronically reproducing the sound of an acoustic accordion, that is provided with a number of keys/buttons, which can be pressed individually so as to excite a corresponding number of reeds that are coupled with every single key/button; for electronica... | 09/20/2005 |
| 5741992 | Musical apparatus creating chorus sound to accompany live vocal sound A chorus apparatus creates an artificial chorus sound in parallel to a live vocal sound. A pickup collects a live vocal sound and converts the collected live vocal sound into a corresponding vocal sound signal. A generator device generates a chorus sound ... | 04/21/1998 |
| 5652403 | Keyboard musical instrument allowing player to perform ensemble together with electronic sound system A keyboard musical instrument has an upright piano, an automatic playing system for exerting forces on the keys of the upright piano instead of a player on the basis of music data codes and an electronic sound generating system for generating electronic s... | 07/29/1997 |
| 5220121 | Melody supplement control apparatus A melody supplement control apparatus is disclosed wherein supplementary tones for melody tones are produced according to predetermined rules, and the degree of the addition of the aforesaid supplementary tones to the aforesaid melody tones is determined ... | 06/15/1993 |
| 5111530 | Digital audio signal generating apparatus A digital audio signal generating apparatus suitable for the application to electronic musical instruments, sound effect generators for amusement machines and the like. This digital audio signal generating apparatus has a signal processing section and a m... | 05/05/1992 |
| 5060270 | Reverberation circuit A reverberation circuit comprises an amplifier, attenuation circuit, a feedback component, and a delay circuit. The amplifier, delay circuit, and feedback component form a feedback loop. The amplifier amplifies an input signal supplied to an input termina... | 10/22/1991 |
| 4947724 | Electric music instrument with the capability of memorizing and producing different musical scales An electronic musical instrument with plural pitch data generating functions includes a keyboard, a plurality of tone generating units, a pitch designating unit, a plural pitch data generating unit, and a musical tone generating unit. The keyboard has a p... | 08/14/1990 |
| 4827547 | Multi-channel tone generator for an electronic musical instrument A keyboard operated electronic musical instrument has a number of tone generators each of which creates a plurality of musical tones each having its own independent frequency offset so that a multi-rank ensemble effect is produced. The tones are produced ... | 05/09/1989 |
| 4552051 | Electronic musical instrument with key touch detector and operator member In an electronic musical instrument comprising a keyboard including a plurality of keys, a tone signal generator for producing a musical tone signal corresponding to a depressed key, a key touch detector for generating a key touch signal concerning a key ... | 11/12/1985 |
| 4499808 | Electronic musical instruments having automatic ensemble function One or a plurality of tones having a predetermined interval relation in terms of degrees with reference to tones produced by depressed keys of a keyboard are automatically selected from among diatonic scale tones of a performed tonality and the selected t... | 02/19/1985 |
| 4500317 | Method of and apparatus for producing an orchestra effect An "orchestra effect" is produced in an electronic musical instrument by mixing a signal at the commanded frequency with a second signal which is displaced in frequency from the commanded signal, the second signal also periodically varying in frequency. T... | 02/19/1985 |
| 4450742 | Electronic musical instruments having automatic ensemble function based on scale mode An electronic musical instrument comprises a keyboard for performing a melody, a chord performing means, tonality designating means for designating a tonality of a music to be performed, melody mode judging means for judging the melody mode of the music b... | 05/29/1984 |
| 4429606 | Electronic musical instrument providing automatic ensemble performance A duet interval data memory includes tables each of which corresponds to a particular chord type and prestores a plurality of duet interval data. One of the tables is selected in accordance with the type of a chord being played in a lower keyboard. A note... | 02/07/1984 |
| 4428270 | Electronic vibrato or celeste Electronic circuits are provided for producing an electronic timbre modulation for effecting celeste or vibrato similar in sonic results to the well-known Leslie rotating speaker system. Electronic signals corresponding to audio tones are generated and ar... | 01/31/1984 |
| 4388850 | Multiple octave generator tuning system A multiple octave generator system for providing tones in an electronic organ permits the production of both ensemble and celeste effects by providing the appropriate amounts of detuning among cascaded ranks of divide-by-two locked octave type tone genera... | 06/21/1983 |
| 4384505 | Chorus generator system A string chorus generator in an electronic musical instrument that accepts a single audio input signal, applies it to three separate delay lines, and provides delay modulated outputs to be used in producing an ensemble musical effect resembling a group of... | 05/24/1983 |
| 4365533 | Musical instrument A new, performer played, real time, multitonal, multitimbral musical instrument consists of speed and force sensitive keys in which time domain multiplexing is used to find and associate one and only one tone generator, not otherwise busy, with any key th... | 12/28/1982 |
| 4343219 | Delay line oscillator A two-phase, period-proportional voltage-controlled oscillator circuit is provided for clocking an analog delay line which can be used, for example, in an electronic musical instrument. The voltage-controlled oscillator circuit provides two clock output s... | 08/10/1982 |
| 4342247 | Production of detuning effects in an electronic musical instrument A detuning control circuit is provided for producing a pitch variation effect in an electronic musical instrument. The instrument includes at least one integrated circuit tone generator chip having at least one tone generator and a detuning circuit respon... | 08/03/1982 |
| 4280388 | Apparatus and method for generating chorus and celeste tones The operation of the chorus generator of FIG. 3 may be summarized as follows. The generation of a realistic chorus tone depends upon the simultaneous amplitude and phase modulation of a tone signal which initially has little or no choral characteristics. ... | 07/28/1981 |
| 4262575 | Quasi-random phase shift system for an electronic musical instrument An electronic musical instrument employing top octave synthesizer circuits (TOS circuits) for generating the musical tones to be reproduced by the instrument employs a single master oscillator common to all of the top octave synthesizer circuits for suppl... | 04/21/1981 |
| 4242935 | Musical tone generator system using multiple frequency synthesizers For generating tones in an electronic musical instrument, there are provided multiple master frequency sources, a different source for each octave, differing in frequency from each other by a factor which differs from two by at least one semitone, each of... | 01/06/1981 |
| 4228717 | Electronic musical instrument capable of generating a chorus sound The disclosure describes improved apparatus for use in an electronic musical instrument having a keyboard including a group of keys corresponding to the notes of a musical scale. Electronic circuitry is used to generate simultaneously with respect to each... | 10/21/1980 |
| 4215616 | Asynchronous tone generator In an electronic organ of the time-sharing type, a single clock source drives a number of variable divisor frequency dividers which are assigned different divisor values to produce different musical tones at different times. In order to prevent phase sync... | 08/05/1980 |
| 4208940 | Device for producing an ensemble effect A device for producing an ensemble effect in an electronic musical instrument. The device has a plurality of parallel electronic delay circuits adapted to be supplied with a musical tone signal, delay time modulating circuits coupled to each of said delay... | 06/24/1980 |
| 4205579 | Device for producing chorus effects 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 ele... | 06/03/1980 |
| 4186643 | Apparatus for chorus effect in electronic musical instruments Apparatus for chorus effect in an electronic musical instrument in which a passing circuit for a musical tone signal is obtained from a musical tone signal generator by operation of a key. The passing circuit is connected to a plurality of variable delay ... | 02/05/1980 |
| 4164884 | Device for producing a chorus effect 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 de... | 08/21/1979 |
| 4162372 | Device for electronically generating the radiation effects produced by a rotary loudspeaker A device for electronically simulating vibrato, chorus, and pseudostereo effects and the radiation effects produced by a rotary loudspeaker with the aid of two loudspeakers or loudspeaker combinations, in which device a controllable amplifier is associate... | 07/24/1979 |
| 4145943 | Electronic musical instrument capable of generating a string chorus sound Improved apparatus for use in an electronic musical instrument having a keyboard including a group of keys corresponding to the notes of a musical scale. Electronic circuitry is used to generate simultaneously with respect to each of the keys first and se... | 03/27/1979 |
| 4144790 | Choral generator A choral generator is formed from a plurality of delay channels, each including a modulated delay line which non-linearly varies the time delay imparted to a signal passing through it. The outputs of the delay channels are combined with the undelayed audi... | 03/20/1979 |
| 4084471 | Circuit arrangement for obtaining a chorus effect A circuit arrangement for generating the tones of a tonal scale includes a master oscillator and a number of sets of frequency converters. The output signals of each set of frequency converters forms each of the tones of an octave. A frequency shifter is ... | 04/18/1978 |
| 4080861 | Chorus control for electronic musical instrument In an electronic musical instrument, in particular an electronic organ, comprising a circuit for electrically modifying a musical tone by frequency modulation to provide an ensemble effect. The circuit comprises three series connected shift registers whic... | 03/28/1978 |
| 4078466 | Pulsato generating system A pulsato generating system which is composed of a sequentially phase inverting signal generator for producing first, second and third sequentially phase inverting signals based on an input musical signal, a phase rotating signal generator for producing f... | 03/14/1978 |
| 4072079 | Apparatus and method for modifying a musical tone to produce celeste and other effects A signal animation system for an electric organ or other electrical musical instrument which utilizes frequency-proportional detuning wherein the percentage detuning is progressive and uniform, to provide celeste and other musical effects. Detuning is acc... | 02/07/1978 |
| 4064778 | Frequency-deviation method and apparatus A carrier wave having a sub-audible frequency is modulated in amplitude by a modulating wave of a tone signal having an audible frequency, which produces a resultant modulated output signal having first and second side band components respectively deviate... | 12/27/1977 |
| 4063484 | Method and apparatus for generating tone signals for a musical instrument A method and apparatus for generating tone signals for a musical instrument, especially an electronic organ, in which a stable high frequency source which is equal in frequency to that of a reference pitch multiplied by a large whole number is divided dow... | 12/20/1977 |
| 4044643 | Musical instrument circuit providing celeste and vibrato effects A circuit is shown for changing the frequency of a basic keyed oscillator by controlling the amount of keying voltage reaching the oscillator and the circuit used for vibrato. The purpose of this circuit is the achievement of true "pipe organ celeste" eff... | 08/30/1977 |
