STRINGLESS TWITCH FRET INSTRUMENT

Abstract: The stringless twitch fret instrument consists of the neck (1) which has on its forward side a finger board on which there are frets (2) located transversally to a lengthwise axis of the neck, of the body (5), the loudspeaker (4) and a direct current charger. The substance of the invention consists in the fact that on the neck (1), between neighbouring frets (2), there is situated at least one digital tone push-button (3), advantageously three to six, which is connected to the tone source which is connected to the loudspeaker (4). Each of digital tone push-buttons (3) located one after the other in a row parallel with the axis of the neck (1), is connected to the tones source which is, in respect to the tone source, connected to the preceding digital tone push-button (3) located in the direction going from the free end of the neck, higher by a tone share. Digital tone push-buttons (3), the tone source and the loudspeaker (4) are in the same time connected to a direct current charger. The digital tone push-button (3) is further connected by its block outlet to the branch between digital tone push-buttons (3), located in a row with this digital tone push-button (3), parallel with the lengthwise axis of the neck (1) between this digital tone push-button (3) and the free end of the neck (1), and the loudspeaker (4).

Description: Stringless twitch fret instrument Technical area The invention concerns a stringless twitch fret instrument, e.g. a stringless guitar, banjo etc. which consists of a neck having on its forward side a finger board on which there are frets, situated transversally to the lengthwise axis of the neck, of a body, a loudspeaker and a direct current charger. Actual technical state A musical sound which creates an agreeable perception in the human nervous system, is produced by periodical movements of bodies so that an acoustic pressure of a sound field is a periodical function of the time. Musical sounds are composed of individual tones. An exactly harmonic course of an acoustic pressure has a pure, by another name simple tone. Musical sounds have been produced until now on twitch fret instruments by twitching strings which are strained along the instrument neck. These strings are tuned up to fixed basic tones. The altitude of the string basic tone is at the same time indirectly proportional to its length and depends further on the string tension and on the weight of the length unit. For instance strings of a six-string guitar are tuned up to tones E, A, d, g, h, el. Required tones are thus produced by shortening strings length. The ability to shorten repeatedly a string to the same length, i.e. the ability of a tone repetition is ensured, as far as regards twitch fret instruments, by frets situated on the neck transversally to its lengthwise axis. These frets are situated in such a way that they successively increase the string sound by half-tones. - *? Musical sounds however contain, besides basic tones, also a certain number of higher harmonic tones of multiplication frequencies and various amplitudes. It is the resonance of other parts of a musical instrument which influences the intensity of these components. In regard to twitch fret instruments, it is the cavity created in the body which has this function. Regarding electronic twitch fret instruments, a musical sound created by twitching is taken and eventually adjusted and reproduced by electronic means, which enables, as far as one instrument is concerned, to change easily the intensity of individual components of the musical sound. It is however disadvantageous that it is possible to carry out these changes in substance only before the play itself; eventually they can be carried out by another person since the musician needs necessarily both hands for to create a musical sound and he has got a limited possibility to execute, when playing, other acts in connection with the change of the electronic means parameters. Essence of the invention Pursuant to the knowledge of this technique state, the task of the invention consists in creating conditions for forming a twitch instrument of the above mentioned type which easily enables to change the intensity of individual components of a musical sound during the play and enables to produce a very large spectrum of musical sounds. For to solve the above mentioned task, it is necessary to create conditions for the player to be able, without being obliged to change substantially playing habits, to play a musical sound on the twitch fret instrument by one hand only and eventually to use a free hand for to change the intensity of individual components of the musical sound created in such a way, eventually for to produce additional musical sounds. This task is solved in accordance with the main requirement in such a way that at least one digital tone push-button, advantageously three to six tone digital push¬ buttons, which is connected to the tone source, this source being connected to a loudspeaker, is situated on the neck between two neighbouring frets. Each of digital tone push-buttons, situated one behind the other in a row parallel with the axis of the neck, is connected to the tones source which is, in respect to the tone source connected to the preceding digital tone push-button, going in the direction from the free neck end, higher by a tone share, preferably by half a tone. Digital push-buttons, the tone source and a loudspeaker are connected to a direct current charger. In accordance with a side requirement, the digital tone push-button is connected by its block outlet to die branch between digital tone push-buttons, situated in a row with this digital tone push-button, parallel with the lengthwise axis of the neck between this digital tone push-button and the free end of the neck, and a loudspeaker. This arrangement lays up from functioning - under the function position, i.e. when the digital tone push-button is pressed - all digital tone push-buttons which are situated in a row with the pressed digital tone push-button, parallel with the lengthwise axis of the neck, behind this pressed digital tone push-button in the direction to the free end of the neck. This arrangement truly simulates twitching on the string instrument when the string produces a tone depending on its last pressing to the fret in the direction to the body, and when it does not react since the mentioned pressing on exercised pressings on the same string in the direction to the free end of the neck. The mentioned shape of the musical instrument pursuant to the invention enables to play with substantially the same habits as on an usual twitch fret instrument; string i vitching is however dropped so that one player ' s hand remains free and the player may use it for to attend other elements of the musical instrument service which are introduced in other side requirements. In comparison with so far known twitch fret instruments, the difference consists only in the fact that the instrument pursuant to the invention does not allow to play with the help of an empty string technique. It is however possible to use the musical instrument pursuant to the invention for a common solo or accompanying play with both hands. In diis event, it is advantageous if at least one digital tone push-button is connected to the tone source by a switching push-button, which is situated on the body. As far as this particular arrangement of the invention is concerned, the tones chosen by digital tone push-buttons situated on the neck will sound only after a touch, twitch on the switching push-button. Another advantage of the musical instrument pursuant to the invention is that its tuning up before a musical performance is dropped which is especially favourable for starting or amateur musicians. Other advantageous arrangements of the invention are introduced in other side requirements. For to ensure a synthetizator accompaniment, it is advantageous if there is situated on the body the management of the synthetizator accompaniment, which is connected to the source of the synthetizator tone, eventually a double-octave piano keyboard for bassing and a harmonic seconding, which are connected to a loudspeaker. This management of the synthetizator accompaniment can consist of three mutually parallel rows of keys while in the upper row, there are situated, in the direction going from the body edge, successively the A-tone key, D-tone key, G-tone key and C-tone key, in the middle row, there are situated, in the direction going from the body edge, successively the E-tone key, Es-tone key, Ais-tone key and F-tone key, and in the lower row, there are situated, in the direction going from the body edge, successively the H-tone key, Fis-tone key, Des-tone key and As-tone key. The management of the synthetizator accompaniment can also consist, in the upper row, in the direction going from the body edge, successively of die D-tone key, G-tone key, C-tone key and F-tone key, in the middle row, in the direction going from the body edge, successively of the A-tone key, Fis-tone key, Des-tone key and Ais-tone key, and the lower row, in the direction going from the body edge, successively of die E-tone key, H-tone key, As-tone key and Es- tone key. In the area of the management of the synthetizator accompaniment, there can be also situated at least one of the following push-buttons, the push-button of the major key accompaniment change into the minor (moll) accompaniment, die push-button of the major key accompaniment change into the fitting chord, the push-button of the major key accompaniment change into the magnified chord, die push-button of die perfect (dominant) septet-chord and the stop push-button. These push-buttons are further connected to the source of the synthetizator tone. On the body, there can be further situated me management of the sound strength of the tone source which is connected to the tone source and / or to the management of the sound accompaniment strength which is connected to tiie source of the synthetizator tone. On die body, there can be situated also at least one push-button of the rhythm selector which is connected to die tone source and / or to die source of the synthetizator tone and / or to a loudspeaker and / or on die body, there can be situated the management of the time (beat) selector which is connected to the tone source and / or to the synthetizator tone source and / or to a loudspeaker. Further on, there can be situated on the body the management of bass altitudes which is connected to die tone source and / or to the synthetizator tone source and / or to a loudspeaker. Illustrations description The invention is further expounded on the example of its execution with the help of drawings illustrating: HI. No 1 a view of the stringless guitar according to the invention, and HI. No 2 a view of a further execution of the management of synthetizator accompaniment Examples of the invention executions The guitar on the drawing consists of the body 5 which has a shape typical for a common guitar. It can have however also a different suitable shape since the shape or the size are not restricted by die shape and size of the resonance (sounding) cavity. On the spot where there is a passing true into cavities in die event of a classical guitar, there is situated on the body 5 die loudspeaker 4. Going from die loudspeaker 4 in die direction of a lengdiwise axis of the body 5, there is situated, fixed to the body 5, the neck 1. The neck I has also die shape analogous to a classical guitar. The terrnination of the guitar neck i into the shape similar to die tuning part of a classical guitar is not however indispensable. Frets 2 are situated on it transversally to die lengthwise axis of the neck i in fixed distances. Between two neighbouring frets 2, there are situated one behind the otiier, parallel with the lengthwise axis of the neck I, always six digital tone push-buttons 3_. Each digital tone push-button 3 is connected to die non-drawn tone source which is connected to die loudspeaker 4, eventually is a part of tiiis tone source. The digital tone push-button 3 is connected to die tones source which is higher by a half-tone in respect to die tone source connected to die preceding digital tone push¬ button 3_, in die direction going from the free end of the neck 1, in me row of digital tone push-buttons 3_, fixed parallel with the axis of die neck 1_. Digital tone push¬ buttons 3, tone source and die loudspeaker 4, are connected at die same time to the non-drawn direct current charger. This direct current charger can be a part of the guitar, it can be however situated also past die guitar and can be equipped by an accumulator source or connected to die power network. The digital tone push-button 3 blocks in its function, i.e. pressed position, the branch starting by die digital tone push¬ button 3 parallel with die lengthwise axis of the neck I between tiiis digital tone push¬ button 3 and the free end of die neck L, and terminating by the loudspeaker 4. There is situated on the body 5 die management 6 of me synthetizator accompaniment, further tiiere is situated in its area at least one of die following push¬ buttons: die push-button 19 of the major key accompaniment change into die minor (moll) accompaniment, the push-button 20 of the major key accompaniment change into the fitting chord, the push-button 2 of the major key accompaniment change into die magnified chord and die push-button 27 of the perfect (dominant) septet-chord. Further, there is situated on die body 5 the management 22 of die sound strength of die tone source which is connected to the tone source, and the management 23 of the sound accompaniment strength which is connected to the source of d e synthetizator tone. There are situated on die body 5 totally also ten push-buttons 24 of the rhythm selector which are connected to the tone source and / or to the source of die synthetizator tone and / or to the loudspeaker 4, the management 25 of the time (beat) selector which is connected to die tone source and / or to the source of die synthetizator tone and / or to the loudspeaker, and the management 26 of bass altitudes which is connected to die tone source and / or to die source of the synthetizator tone and / or to the loudspeaker. There can be situated on die body 5 also a switching push-button which is not drawn in the illustrations. The management 6 of die syntiietizator accompaniment is connected to die source of the syntiietizator tone which is connected to the loudspeaker 4. This management 6 of die synthetizator accompaniment consists of three mutually parallel rows of keys 7 to 18. There are situated at die same time in die upper row in the direction going from the edge of the body 5 successively die key 7 of die A-tone, die key 8 of the D-tone, the key 9 of the G-tone and the key JO of the C-tone; in the middle row in die direction going from the edge of die body 5 successively die key H of the E-tone, die key 12 of the Es-tone, me key J of die Ais-tone and die key .14 of the F-tone; and in die lower row in the direction going from die edge of die body 5 successively the key 18 of the H-tone, the key j_7 of he Fis-tone, the key J_6 of the Des-tone and die key 5 of the As- tone. The indicated execution of die management 6 of the syntiietizator accompaniment enables even an average amateur player a very easy service of the syntiietizator accompaniment, and that is why also a full concentration on the play on the neck by the left hand The management 6 of the syntiietizator accompaniment according to the illustration No 2 has got a very easy service, too. This management 6 of the synthetizator accompaniment consists also of three mutually parallel rows of keys 7 to 1_8. There are situated at die same time in the upper row in the direction going from die edge of the body 5 successively die key 8 of the D-tone. the key 9 of the G-tone, die key K) of die C-tone and die key 14 of die F-tone; in the middle row in the direction going from die edge of the body 5 successively the key 7 of the A-tone, die key 17 of die Fis-tone, die key 16 of the Des-tone and the key V3 of the Ais-tone; and in die lower row, in die direction going from die edge of the body 5 successively the key H. of the E-tone, the key 18 of die H-tone, the key 15. of die As-tone and die key 12 of die Es-tone. By pressing pertinent keys 7 to 18, the player will bring into action the accompaniment play, i.e. bass, harmonic seconding, eventually beat seconding in major key chord pursuant to die selected key 7 to 18. The player masters the management 6 of the syntiietizator accompaniment by four lingers - forefinger, middle finger, ring-finger and little finger. The push-button 19 of the major key accompaniment change into die minor (moll) accompaniment, die push-button 20 of the major key accompaniment change into the fitting chord, die push-button 2 of the major key accompaniment change into the magnified chord and the push-button 27 of die perfect (dominant) septet-chord are connected to die source of die synthetizator tone, too. The player manages tiiese push¬ buttons 19 to 21, 27 by his tiiumb. On die body 5 , above the management 6 of the synthetizator accompaniment, there is situated die stop push-button 28 which the player masters by his palm. By using the stop push-button, die syntiietizator accompaniment play is terminated The body 5_ is further equipped by the entrance 29 for die apparatus and by the entrance 30 for the foot vibrator. Both tiiese entrances 29 and 30 are connected to the loudspeaker 4. The guitar according to die invention enables to produce, when one player plays, a substantially broader scope of musical sounds than guitars of die existing execution. List of used marking characters 1 neck 30 entrance for a foot vibrator 3 digital tone push-button loudspeaker 5 body 6 management of die synthetizator accompaniment A-tone key D-tone key G-tone key 10 C-tone key 11 E-tone key 12 Es-tone key 3 Ais-tone key 4 F-tone key 5 As-tone key 6 Des-tone key 7 Fis-tone key 8 H-tone key 9 push-button of die major key accompaniment change into a minor (moll) accompaniment 0 push-button of the major key accompaniment change into the fitting chord 1 push-button of die major key accompariiment change into the magnified chord 2 management of the sound strength of die tone source 3 management of the sound accompaniment strength 4 push-button of die rhythm (time-keep) selector 5 push-button of die time (beat) selector 6 management of bass altitudes 7 push-button of the perfect (dominant) septet-chord 8 stop push-button 9 entrance for apparatus

Claims: P A T E N T R E Q U I R E M E N T S 1. The stringless twitch fret instrument, consisting of the neck (1) which has on its forward side a finger board, on which there are frets (2) situated transversally to die lengthwise axis of die neck, of the body (5), the loudspeaker (4) and a direct current charger, characterized by the fact that on die neck (1), between neighbouring frets, tiiere is situated at least one digital tone push-button (3) which is connected to a tone source which is connected to the loudspeaker (4), each of digital tone push-buttons (3), located one behind die otiier in a row parallel with die axis of die neck (1), is connected to die tones source which is, in respect to the tone source, connected to die preceding digital tone push-button (3) located in the direction going from the free end of the neck (1), higher by a tone share, while digital tone push-buttons (3), d e tone source and the loudspeaker (4) are connected to a direct current charger. 2. The stringless twitch fret instrument according to the requirement 1, characterized by the fact that always 3 to as much as 6 digital tone push-buttons are situated between neighbouring frets. 3. The stringless twitch fret instrument according to requirements 1, 2, characterized by the fact that the digital tone push-button (3) is connected by its block oudet to the branch between digital tone push-buttons (3), situated in a row with this digital tone push-button (3) parallel witii a lengthwise axis of the neck (1), between this digital tone push-button (3) and the free end of the neck (1) and the loudspeaker (4). 4. The stringless twitch fret instrument according to one of the requirements 1 to 3, characterized by the fact that at least one digital tone push-button (3) is connected to die tone source through a switching push-button which is fixed on the body (5). 5. The stringless twitch fret instrument according to one of the requirements 1 to 4, characterized by the fact that on die body (5), there is situated the management (6) of - l i ¬ the synthetizator accompaniment which is connected to die source of the synthetizator tone which is connected to the loudspeaker (4). 6. The stringless twitch fret instrument according to die requirement 5, characterized by the fact that the management (6) of the synthetizator accompaniment consists of three mutually parallel rows of keys (7 to 18) while in the upper row, there are situated, in the direction going from the edge of the body (5), successively the key (7) of the A-tone, the key (8) of the D-tone, the key (9) of the G-tone and the key (10) of the C-tone; in the middle row, in the direction going from die edge of the body (5), successively the key (11) of the E-tone, the key (12) of the Es-tone, die key (13) of die Ais-tone and die key (14) of the F-tone; and in the lower row, in the direction going from the edge of the body (5), successively die key (18) of the H-tone, the key (17) of the Fis-tone, the key (16) of the Des-tone and die key (15) of the As-tone. 7. The stringless twitch fret instrument according to the requirement 5, characterized by the fact that the management (6) of the synthetizator accompaniment consists of three mutually parallel rows of keys (7 to 18) while in the upper row, in the direction going from the edge of the body (5), there are situated successively the key (8) of the D-tone, the key (9) of the G-tone, the key (10) of die C-tone and the key (14) of the F-tone; in the middle row, in die direction going from the edge of die body (5), successively the key (7) of the A-tone, the key (17) of the Fis-tone, the key (16) of the Des-tone and die key (13) of the Ais-tone; and in the lower row, in the direction going from the edge of the body (5), successively die key (11) of the E-tone, the key (18) of the H-tone, die key (15) of the As-tone and die key (12) of the Es-tone. 8. The stringless twitch fret instrument according to one of the requirements I to 3, characterized by the fact that on the body (5), there is situated a double-octave piano key-board for bassing and a harmonic seconding which is connected to a loudspeaker. 9. The stringless twitch fret instrument according to the requirements 5 to 7, characterized by the fact that in the area of the management (6) of the synthetizator accompaniment, there is situated at least one of the following push-buttons, the push¬ button (19) of the major key accompaniment change into die minor (moll) accompaniment, the push-button (20) of the major key accompaniment change into the fitting chord, the push-button (21) of the major key accompaniment change into the magnified chord and die push-button (27) of the perfect (dominant) septet-chord and the stop push-button (28), these push-buttons (19 to 21, 27, 28) being connected to the syntiietizator tone source. 10. The stringless twitch fret instrument according to one of the requirements 1 to 9, characterized by the fact tiiat on the body (5), there is situated the management (22) of die sound strength of die tone source which is connected to the tone source. 11. The stringless twitch fret instrument according to one of die requirements 1 to 10, characterized by the fact tiiat on the body (5), there is situated the management (23) of die synthetizator accompaniment strength which is connected to the synthetizator tone source. 12. The stringless twitch fret instrument according to one of die requirements 1 to 10, characterized by the fact that on the body (5), there is situated at least one push¬ button (34) of the rhythm (time-keep) selector which is connected to the tone source and / or to die syntiietizator tone source and / or to die loudspeaker (4). 13. The stringless twitch fret instrument according to one of the requirements 1 to 12, characterized by die fact that on die body (5), there is situated the management (25) of the time (beat) selector which is connected to die tone source and / or to the synthetizator tone source and / or to the loudspeaker (4). 14. The stringless twitch fret mstrument according to one of die requirements 1 to 13, characterized by the fact that on the body (5), there is situated the management (26) of bass altitudes which is connected to the tone source and / or to the synthetizator tone source and / or to die loudspeaker (4).

Inventors: MLADEK IVAN, MLADEK, IVAN
Applicants: MLADEK IVAN, MLADEK, IVAN
Application year: 1997
Main classification: G10H1
IPC codes: G10H1, G10H5