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System for magnetically attaching templeless eyewear to a person
A system of eyewear that eliminates the need for hinges on the frames of the eyewear.
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| Number | Title | Issue Date |
| 7242784 | Dynamic gain control of audio in a communication device A method for dynamically controlling audio signal gain in a communication device starts with determining a level of an input audio signal. The level is then mapped against a table of predetermined corresponding gain targets to determine an appropriate gain target fo... | 07/10/2007 |
| 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 |
| 6931124 | Soft mute circuit A soft mute circuit includes a programmable amplifier controlled by a register. Data is stored in the register from an adder that combines the current data in the register with a second number for increasing or decreasing the gain of the amplifier. A summation circu... | 08/16/2005 |
| 6444891 | Electronic guitar with its keys arranged in complex array Electronic guitar including a case, a keyboard, a sound synthesis electronic assembly and an output line. The keyboard is divided into an upper keyboard arranged on a neck of the case and a lower keyboard arranged on a body of the case. The upper and lowe... | 09/03/2002 |
| 6011213 | Synthesis of sounds played on plucked string instruments, using computers and synthesizers A sound synthesizer for a plucked string instrument simulates noises and transients produced before and after and during the transitions between notes. A particularly convincing synthesis of a plucked string instrument is produced by combining the transie... | 01/04/2000 |
| 5668783 | Sound generator in particular for a timepiece A sound generator comprises a transducer (3) intended to be supplied with a signal having a frequency determining the sound to be produced and having a variable amplitude (envelope). To this effect, the transducer is connected in series with the principal... | 09/16/1997 |
| 5414210 | Multiple oscillator electronic musical instrument having a reduced number of sub-oscillators and direct-read/write of modulation control signals An electronic musical instrument according to the present invention has oscillators for generating a tone waveform; a modulator for modulating a musical tone; a modulation controller for determining a degree of modulation to be performed by the modulator;... | 05/09/1995 |
| 5157216 | Musical synthesizer system and method using pulsed noise for simulating the noise component of musical tones A music synthesizer simulates the musical tones of bowed string and wind instruments. The synthesizer includes a noise generator which generates pulsed noise signals, as well as a resonant system or signal generator which generates deterministic or period... | 10/20/1992 |
| 5062341 | Portable drum sound simulator generating multiple sounds A portable drum sound simulator is provided which includes an electronic drum sound generating means capable of generating a plurality of drum-like sound outputs and energizable in response to electrical trigger signals. Also included is a tone pitch vary... | 11/05/1991 |
| 5025703 | Electronic stringed instrument An electronic stringed instrument employs a plurality of sensors or monitors for instrument performance. Preferred sensors or monitors include a detector for detecting that a string of the instrument is vibrated, an apparatus for evaluating a string-vibra... | 06/25/1991 |
| 4951546 | Electronic stringed musical instrument For elimination of an error made in a sound production, an electronic fretted and stringed musical instrument operates in a parameter adjusting mode of operation prior to a playing mode of operation, and the fret positions are adjusted for actual fret mem... | 08/28/1990 |
| 4928569 | Envelope shape generator for tone signal control An envelope shape generator generates envelope shape data for controlling a tone signal in the form of data in decibel representation. In performing a rapid attenuation control called "forcing damp" during attenuation of the envelope shape data generated ... | 05/29/1990 |
| 4919031 | Electronic stringed instrument of the type for controlling musical tones in response to string vibration When picking of a string is performed, the vibration of the string is detected accurately and quickly. When a fret operation position is changed during generation of a musical tone caused by the string picking, the pitch of the musical tone is changed to ... | 04/24/1990 |
| 4909119 | Musical tone control system with a pedal for adding a musical effect to a musical tone An electronic musical instrument for causing a tone generator to generate a musical tone corresponding to a musical performance while controlling an envelope by operation of a pedal. An operated-amount signal generator is provided for detecting an operate... | 03/20/1990 |
| 4892023 | Electronic keyboard percussion instrument An electronic keyboard percussion instrument includes a hammer such as a mallet, a plurality of plates, striking detection devices, and a musical tone generating section. The plates respectively correspond to note names of musical tones to be produced and... | 01/09/1990 |
| 4805511 | Electronic bell-tone generating system An electronic bell-tone generating system selectively provides a plurality of bell tones having improved tonal quality includes a plurality of tone generators operated in preselected combinations by a microprocessor in response to inputs from a keyboard. ... | 02/21/1989 |
| 4699038 | Touch sensitive electronic musical or sound generating instrument A touch sensitive electronic musical or sound generating instrument is disclosed. The invention utilizes digital techniques to sense how hard any one of a plurality of push buttons on a keyboard is depressed or actuated. The instrument generates a desired... | 10/13/1987 |
| 4567806 | Sound generator The sound generator applies an envelope to the note signal. Current to the sound producing element is controlled by a series transistor whose base is driven with a signal having a frequency corresponding to the musical note. The driving voltage applied to... | 02/04/1986 |
| 4487099 | Electro-acoustic transducer drive circuit for producing damped waveform envelope musical notes An electro-acoustic transducer drive circuit for driving a device such as a miniature piezoelectric buzzer to emit musical notes, the notes having a damped waveform envelope whose shape is controlled by digital signals. The notes are formed by mutually in... | 12/11/1984 |
| 4401975 | Electrical synthesis of mechanical bell Circuit means for synthesizing the sound of a mechanical bell by combining the three most significant frequencies of the bell to be synthesized and modulating these with a decaying exponential control signal which is derived from a clock signal having a p... | 08/30/1983 |
| 4397210 | Rhythm sound generator An electronic circuit triggered by pulses derived from the rhythm pattern generator of an electronic organ simulates the sound of a group of people clapping hands by producing in bursts at least two different sound signals of differing characteristics and... | 08/09/1983 |
| 4397211 | Circuit for producing musical tones A circuit for producing musical tones is disclosed which includes a keyboard for selecting the musical tones, and a tone generator responsive to the keyboard for generating a square wave signal having the frequency of the musical note to be generated. A c... | 08/09/1983 |
| 4384506 | Polyphonic electronic musical instrument producing prominent solo tone An electronic musical instrument of a polyphonic type comprises, first tone generating means capable of producing, in a first musical tone property, a plurality of musical tones respectively corresponding to a plurality of depressed keys, and further comp... | 05/24/1983 |
| 4372187 | Novel guitar-like electronic musical instrument By providing as circuit activators flexible, intentionally damped, vibratory elements, for example strings, the resonant frequency of which may be unrelated to the tone to be generated, while utilizing electronic circuits controlled by such flexible eleme... | 02/08/1983 |
| 4364296 | Electrical musical instrument An electronic piano includes a tone generator having a pulse generator and a discrete TOS circuit for each octave. The input of the first TOS circuit is connected with the pulse generator and the input of each next-following TOS circuit is connected with ... | 12/21/1982 |
| 4357852 | Guitar synthesizer A guitar synthesizer comprises a guitar portion and a synthesizer portion which are electrically connected to each other. The guitar portion includes strings stretched between a nut and a bridge and pickup means for detecting a string vibration for provid... | 11/09/1982 |
| 4356751 | Electronic musical instrument An electronic musical instrument comprises a musical tone production circuit responsive to a depressed key among a plurality of keys, and a control circuit for controlling tone production manner which includes a plurality of manually operated members moun... | 11/02/1982 |
| 4338845 | System for expanding the dynamic volume range of electronic musical instruments An electronic musical instrument wherein depression of a key entails the discharge of a primary capacitor which is connected to the inverting input of an operational amplifier whose output is connected with a second capacitor serving to supply envelope co... | 07/13/1982 |
| 4333375 | Electronic musical instrument having time multiplexed keying system A keying system for an electronic musical instrument incorporates time division multiplexing of the individual frequency component signals which are combined to synthesize musical notes or tones. A signal generator provides the fundamental and various har... | 06/08/1982 |
| 4326442 | Electronic musical instruments with tone color selection In an electronic musical instrument of the type comprising a musical tone signal generator responsive to depression and release of a key of a keyboard for generating a musical tone signal, and a selector including a plurality of tone color selection switc... | 04/27/1982 |
| 4320682 | Envelope generating circuit for an electronic musical instrument An improved envelope generator circuit for an electronic organ provides a musically correct attack rate, i.e., the volume of a musical note is increased by an equal number of decibels for equal increments of time. The envelope generating circuit comprises... | 03/23/1982 |
| 4315452 | Electronic organ percussive modulator An electronic organ apparatus arranged to provide percussive musical tones by differentiating a rectangular waveform tone signal and subsequently clipping the differentiated signal at a variable level under the control of an envelope signal to produce an ... | 02/16/1982 |
| 4300431 | Pitch extractor circuit A pitch extractor for an electronic musical instrument generates a digital count indicative of the period of the signal whose frequency is to be extracted and processes this count to provide an analog control voltage corresponding to this frequency; the c... | 11/17/1981 |
| 4291605 | Music synthesizer There is disclosed herein a music synthesizer which responds to a music note played by a music instrument. The synthesizer has an envelope generator which generates a control signal in relation to the input signal to control the loudness of the synthesize... | 09/29/1981 |
| 4290334 | Electronic wave sharing synthetic sound system An electronic sound system especially effective with bell sounds synthesizes the approximate sound of each bell in a set of 49 switch operated bell sounds. The synthesizing is accomplished by utilizig an envelope generator for each partial of a group of 7... | 09/22/1981 |
| 4282791 | Keyer system for an electronic organ A keying system provides selectable decay times for individual frequency components of a tone to be generated by an electronic organ having a top octave generator producing a multiplicity of rectangular wave signals, and a plurality of associated divider ... | 08/11/1981 |
| 4278001 | Selective keyer biasing to enhance percussion effect A keying system provides selectable decay times for individual components of a tone to be generated by an electronic organ having a top octave generator producing a multiplicity of rectangular wave signals, and a plurality of associated divider circuits. ... | 07/14/1981 |
| 4271743 | Envelope signal generator An envelope signal generator which has a key depression/release signal generator for producing different output levels in response to key depression and key release, a switching circuit which is set to a first output level upon key depression and set to a... | 06/09/1981 |
| 4263828 | Electronic musical instrument having envelope controlled _automatic performance An electronic musical instrument having an automatic performance device includes a memory storing in addition to automatic performance data, envelope control data for controlling envelopes of automatic performance tones to be generated. The envelope contr... | 04/28/1981 |
| 4259888 | Tone generation system employing triangular waves A digital technique for triangular musical waveform generation is disclosed. A musical scale value corresponding to a selected note is repetitively added to produce an ascending series of non-consecutive numbers which is stored in a latch. A carry output ... | 04/07/1981 |
