Class 84/451 - Special or enharmonic scales

Subclass of Class 84 - Music
Definition: Pianos or organs furnishing more than twelve notes to the
No. of patents: 29
Last issue date: 09/25/2007

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Number	Title	Issue Date
7268051	Semiconductor on glass insulator with deposited barrier layer Methods and apparatus provide for: a silicon on insulator structure, comprising: a glass substrate; a layer of semiconductor material; and a deposited barrier layer of between about 60 nm to about 600 nm disposed between the glass substrate and the semiconductor mat...	09/11/2007
6958442	Dynamic microtunable MIDI interface process and device A software solution to the pitch limitations inherent in the MIDI standard. The invention uses the Polyphonic Aftertouch (also known as “Key Aftertouch”) messages available in the basic MIDI standard to retune selected notes, according to the following process: ...	10/25/2005
6924426	Automatic expressive intonation tuning system A method for the algorithmic expressive intonation tuning (EIT) and performance of electronic, computer and MIDI musical works relies on melodic intervals, rather than on chordal harmony, and acts by desirably modifying the pitch of a note slightly (compared to equa...	08/02/2005
6323408	Music creation Templates are used in methods of improving the perceived intonation of musical notes by modifying each note to provide certain frequencies between adjacent pairs of notes. The template modifications provide, in a sequence of twelve notes per octave, or ex...	11/27/2001
6194646	Musical keyboards playing new kinds of music A new musical keyboard and musical scale is provided by subdividing each octave into a larger number of parts, or notes. In one case, each octave contains sixteen notes, rather than the conventional twelve. In another case, each octave contains twenty not...	02/27/2001
6121534	Natural-scale tone-generator apparatus for MIDI musical keyboards After centuries of compromise and frustration, the unacceptable distortion created by equal-tempered-scale tuning can finally be eliminated and a musical keyboard instrument will be able to produce perfect harmony in any playing key. The invention is a na...	09/19/2000
6093879	Bicameral scale musical instruments This application relates to various stepped pitch instruments crafted to a novel musical tuning system for the generated frequencies. As such, the tone selection devices are arranged to a distinct set of interval specifications when compared to the tone s...	07/25/2000
5841053	Simplified keyboard and electronic musical instrument Disclosed is an electronic musical instrument comprised of operators organized in repeating patterns of seven. The operators are electronically interpreted to correspond only to the valid notes of a selected scale. The repeating patterns of seven notes di...	11/24/1998
5565641	Relativistic electronic musical instrument An electronic musical instrument preferably contains a microprocessor-based MIDI controller which receives signals from a standard IBM-compatible computer keyboard as input and processes the signals to reproduce music. A simple but powerful calculation, w...	10/15/1996
5516981	Musical instrument tuned in nineteen note temperament scale A musical instrument produces nineteen tones in each octave, and the nineteen tones have respective fundamental frequencies regulated to a geometrical series of 19 Ýa;2 so as to be highly harmonized without difficult in performance....	05/14/1996
5502274	Electronic musical instrument for playing along with prerecorded music and method of operation An electronic musical instrument includes manual input devices such as keys, a memory device or devices such as CDs which contain a prerecorded musical signal, prerecorded translation tables, and a prerecorded series of translation table switching signals...	03/26/1996
5430913	Keyboard instrument for the natural tone system A keyboard instrument for the natural tone system with at least one keyboard whose keys are assigned to the overtones in a predetermined sequence. According to the invention, the keyboard is optimally adapted to the conditions of the natural tone system b...	07/11/1995
5412153	Electronic musical instrument having independent pitch control for each key Disclosed is a tone generating apparatus which is provided with a timbre select switch to specify a timbre and a scan circuit for generating key codes corresponding to keys. Pitch control values corresponding to the timbres and key codes are stored in the...	05/02/1995
5306865	Electronic keyboard musical instrument or tone generator employing Modified Eastern Music Tru-Scale Octave Transformation to avoid overtone collisions An electronic musical instrument for reproducing chords or pure tones in a fixed interval scale, called Modified Eastern Music Tru-Scale Octave Transformation by the inventors, without overtone collision. The instrument includes a memory for storing and r...	04/26/1994
5129303	Musical equipment enabling a fixed selection of digitals to sound different musical scales Musical equipment enables the row of front digitals of a musical keyboard to sound either the diatonic scale or a six-tone musical scale. Thus music written by different methods of notation can be played on the keyboard by a musician trained in either one...	07/14/1992
4972752	Microtonal key module and system A microtonal key module includes a central key and a number of surrounding keys clustered about the central key. The central key and the surrounding keys establish among each other a progression of successive microtonal increments. A plurality of such mic...	11/27/1990
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
4658695	Multi-decked keyboard for musical instruments A multi-decked keyboard for musical instruments has three decks arranged for ease of playing with each hand. The primary deck is substantially a normal piano-like keyboard; the second deck is also substantially a normal piano-like keyboard except that the...	04/21/1987
4640173	Electronic musical instrument An electrically-keyed musical instrument has a double-row keyboard in which back digitals alternate with front digitals throughout the keyboard. The keyboard is provided with two sets of landmarks to assist playing from either the traditional notation or ...	02/03/1987
4628792	Modified musical instrument keyboard A keyboard for a musical instrument includes at least one series of keys wherein seven keys in the series and five keys correspond to the typical piano or synthesizer white and black keys, respectively. Twelve narrow keys at a third level raised from the ...	12/16/1986
4498363	Just intonation electronic keyboard instrument A just intonation electronic keyboard instrument comprises a plurality of tonality selection switches for selecting each key from among twenty-four just intonation keys, a control circuit for determining one or a plurality of just intonation keys accordin...	02/12/1985
4480519	Musical instrument with improved keyboard An improved keyboard for a musical instrument includes a plurality of keys arranged in a side-by-side order, all lying in a common plane. Different embodiments of the invention have a varying number of keys per octave, from as small as 12 keys per octave ...	11/06/1984
4048893	Electronic musical instrument Electronic tone transposition apparatus in an organ allows the front digitals of the keyboard to play different musical scales and to play the diatonic scale in different keys. The apparatus physically actuates a key signature of written music by intercha...	09/20/1977
4031800	Keyboard for a musical instrument Geometrically, my keyboard is characterized by a two-dimensional pattern of at least six horizontal and at least six vertical rows of keys. The center-to-center spacing between adjacent keys, both horizontally and vertically, is no greater than about one ...	06/28/1977
4009633	Electronic musical instrument The organ is designed to play six-tone musical scales, which lead naturally to a simple and easily learned system of hexatonic notation. A scale selector apparatus can be set to make different hexatonic scales playable on the front digitals of the keyboar...	03/01/1977
3986422	Electronic musical instrument The organ plays either a hexatonic scale or the diatonic scale on its front digitals. The organ has a tone transposition apparatus comprising a scale selector apparatus, a key selector apparatus and an absolute pitch changer switch. The key selector appar...	10/19/1976
3973460	Keyboard type musical instrument The instrument is designed to play a six tone scale on its lower digitals, which leads naturally to a simple and easily learned system of music notation. In the preferred embodiment, the six tone scale consists of the first six tones of the conventional d...	08/10/1976
3943811	Keyboard type musical instrument The musical instrument has a keyboard which may be arranged to have either seven or five lower digitals per octave span. The musical tones are electrically keyed by means of digital switches. A scale selector switch changes the connections between the dig...	03/16/1976

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Class 84/451 - Special or enharmonic scales