WO2022266732A1 - Device for enhancing sound efficiency applied in acoustic guitar or similar instrument - Google Patents

Device for enhancing sound efficiency applied in acoustic guitar or similar instrument Download PDF

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Publication number
WO2022266732A1
WO2022266732A1 PCT/BR2021/050278 BR2021050278W WO2022266732A1 WO 2022266732 A1 WO2022266732 A1 WO 2022266732A1 BR 2021050278 W BR2021050278 W BR 2021050278W WO 2022266732 A1 WO2022266732 A1 WO 2022266732A1
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WIPO (PCT)
Prior art keywords
rod
sound
instrument
enhancement
handle
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PCT/BR2021/050278
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French (fr)
Portuguese (pt)
Inventor
Armando OBLADEN FILHO
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Obladen Filho Armando
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Priority to PCT/BR2021/050278 priority Critical patent/WO2022266732A1/en
Publication of WO2022266732A1 publication Critical patent/WO2022266732A1/en

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/02—Resonating means, horns or diaphragms

Definitions

  • This invention patent deals with a device for enhancing sound efficiency applied to acoustic guitar or similar stringed instrument such as electroacoustic guitar, ukulele, mandolin, cavaquinho, harpsichord, acoustic bass and others where, notably, said device is installed in the easel's influence region and fitted between structural reinforcements of the top and bottom tops of the musical instrument and is comprised of a structural rod pierced, or involved, by one or more vibrating handle(s), in order to harmonize the tops through of union by direct contact and, therefore, optimizing the propagation of sound waves, in addition to enabling a gain in sound power with musical quality.
  • acoustic guitar or similar stringed instrument such as electroacoustic guitar, ukulele, mandolin, cavaquinho, harpsichord, acoustic bass and others
  • said device is installed in the easel's influence region and fitted between structural reinforcements of the top and bottom tops of the musical instrument
  • the acoustic guitar has, as its main structural characteristic, the predictability of a larger and wider resonance box, as well as, it does not have space in the box for the entry of electrical cables.
  • the body of the box is comprised of a lower top (bottom), sides and top top where the easel, saddle, nut, hand, arm, scale and heel are mounted, as well as the internal parts of said body.
  • Said resonance box has an opening called a 'mouth', usually circular and centralized in shape and the resonance of the sound occurs through vibrations of the wood and vibrations that come through the air, when the guitar strings are played, whose shape in '8' it allows the appearance of innumerable modes of vibration; mentioned resonance causes the amplitudes of the sound waves to increase and the sound to be amplified.
  • Another way of improving the soundboard consists of changing the location of the guitar's 'mouth', and in terms of improving sound production and musical quality, no significant results were achieved, changing only the differential aesthetic form in relation to to conventional models.
  • the resonance boxes were made of different woods and synthetic materials and, with this, significant progress was achieved in sound production with the introduction of the “Double top” tops that use two wooden blades with the synthetic material “ kevlar” glued between them. Despite obtaining an increase in sound, musically it resulted in a slightly noticeable nasal effect that, with some reluctance, has been accepted by the market.
  • the 'Tornavoz' comprises a cone made of metal and installed in the inner portion of the soundhole of the guitar, enhancing tonal contrasts and the separation of voices.
  • the sound volume does not present a significant improvement, since it directs the sound flow and is located in the region surrounded by sleepers that inhibit sound propagation, as well as the origin of the propagation is in the region of the easel, where the strings make the top vibrate, a region far from the mouth and, therefore, from the Tornavoz. Therefore, it can be concluded that the 'Tornavoz' performs its function mainly through the sound vibration that reaches it through the air. This "aerial" propagation manages to enhance the tonal contrasts well, but it is not enough to increase the sound power.
  • Document No. US5567895 features a sound reverberator for a stringed musical instrument having a sounding board and strings tensioned about a saddle member of a bridge piece connected to an upper wall of the sounding board.
  • the reverberator comprises one or more pre-tensioned springs fixed internally to the soundboard.
  • a metallic transfer member is attached to a free end of the spring inside the speaker. The transfer member is moved under the strings by a finger-actuated displaceable support member to releasably engage the springs of the musical instrument to transfer vibrations from the strings to one or more metal springs to produce sound vibrations internally to the case. to modify the tonality of the sound generated by the soundboard as a result of placing the strings in vibration.
  • Document No. US2006130632 discloses a resonator assembly that includes a resonator, a manifold-amplifier, as well as a tone tray, one or more tone pieces, and a detector stand.
  • the assembly resonator intended to be attachable to a conventional acoustic guitar and improves the quality and volume of the conventional one.
  • a wooden or metal tone piece or a combination thereof can be used according to the user's sound preference.
  • the resonator, collector-amplifier, tone support tray and detector support are preferably made of fine brass.
  • a removable device for enhancing sound efficiency applied to acoustic guitar or similar string instrument such as electroacoustic guitar, ukulele, mandolin, cavaquinho, harpsichord, and acoustic bass, especially installed in the region of influence of the easel and between the structural reinforcements of the tops of the musical instrument providing union by direct contact and, therefore, optimizing the propagation of sound waves, in addition to enable a sound power gain with musical quality.
  • Another objective of this invention is to present a device for enhancing sound efficiency comprising a structural rod pierced by one or more vibrating handle(s) which, in turn, propagates sound waves through the air instantly, keeping its characteristics of intensity, and evidencing the separation of the notes.
  • the purpose of this invention is to present a device for enhancing sound efficiency whose structural rod harmonizes the upper and lower tops by direct contact, through the structural reinforcements of the musical instrument, with the lower top being the point of reinforcement consisting of the intersection between the largest crossbeam and reinforcement of the longitudinal joint, while on the top top, it is yet another crossing, now between the central bar of the harmonic fan and the easel.
  • Said reinforcements, lower top (beam and reinforcement of the joint) as in the upper top (central bar of the harmonic fan and easel), both crossings work directly in the active irradiation of the sound waves throughout the instrument.
  • This invention also presents a device for enhancing sound efficiency whose structural rod has grooves at both ends for a firm and stable fit in the structural reinforcements of the musical instrument.
  • Another objective of this invention is the fact that the device for enhancing sound efficiency allows it to be possible to find the ideal sound for each user, and even have preferred devices for specific execution of musical genres, such as, for example, a device made from a rod of fir and vibrating brass handle idealized to interpret music from the baroque period or device made of synthetic carbon fiber material to interpret modern music, among other possible variations.
  • Another objective of this invention is to obtain sounds with rich and deep timbres, because the fundamental 'Helmholtz' resonance of the instrument decreases by up to two tones.
  • Figure 1 represents an exploded perspective view of the elements that make up the device in question
  • Figure 2 shows an assembled perspective view
  • figures BA and 3B represent front and top views of the device
  • Figures 4A and 4B show top and bottom views of a guitar resonance box illustrating the positioning of the device to enhance sound efficiency
  • Figure 5 shows a longitudinal section A. A of the resonance box of a guitar illustrating the assembly of the device in question;
  • Figures 6A, 6B, 6C, 6D, 6E and 6F show perspective views of constructive variations of the vibrating handle.
  • this patent refers to the "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED IN ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", more precisely it is a device (10) for enhancement of sound efficiency applied in acoustic guitar or similar string instrument (IT) such as electro-acoustic guitar, ukulele, mandolin, cavaquinho, harpsichord, and acoustic bass.
  • IT string instrument
  • said device (10) for enhancing sound efficiency is comprised of a structural rod (11) made of wood or synthetic material receiving at least one vibrating handle (12), made of metal sheet, brass or equivalent and of constant width (L), where said rod (11) is arranged perpendicularly between the upper (Tl) and lower (T2) tops (T2) of the instrument (IT) (see Figures 4A, 4B and 5), more precisely in the connection region of the reinforcements (20) formed by the crosspiece (21a) and reinforcement of the junction (21b) of the lower top (T2) and by the central bar (22a) and easel (22b) of the upper top (Tl) that make up the irradiation activity of sound waves throughout the instrument (IT) (see figures 4A and 4B).
  • the length (cl) of the structural rod (11) is extended between 4 to 8% greater in relation to the distance (dl) expected between the Christian of the transom (21a) and the central bar (22a) of the harmonic fan (22) of the instrument (IT), preferably 5.5% so that the ends of the rod (11) do not touch the thin wood of the tops.
  • the length (cl) of the rod (11) fits between the bottom of the grooves (lla)/(llb) being presented between 0.5 to 1% greater in relation to the distance (dl) expected between the Christians: i ) of the crosspiece (21a), and ii) of the central bar (22a) of the harmonic fan (22) of the instrument (IT), preferably 0.7% for stability of said rod (11) when assembling between the reinforcements (20) , dispensing with auxiliary means of fixation such as screws, pins and others.
  • contact is made for a firm and stable fit of the device (10) due to the increase of 0.5 to 1% in relation to the distance (dl).
  • Said device (10) when installed between the reinforcements (20), specifically, with the rod (11) that harmonizes and directly contacts the tops (Tl) and (T2) allowing sound propagation (psl) through the wood of the instrument (IT), while sound propagation (ps2) through the air is performed by the vibrating handle(s) (12).
  • the association of sound propagation (psl) with sound propagation (ps2) configures sound power with the musical quality of the musical instrument (IT).
  • Both the rod (11) and the vibrating handle (12) can be made in different materials and the combination of different materials configures a specific sonority for the execution of peculiar musical genres, for example: rod (11) made of spruce associated with vibrating handle(s) (12) made of brass to interpret music from the baroque period or rod (11) made of synthetic carbon fiber or graphene material associated with vibrating handles also made of synthetic material, to play contemporary music, among other possibilities.
  • the rod (11) has a cylindrical shape whose extreme portions are flat and orthogonal to the longitudinal axis and each of them has a respective groove (11a) and (11b) orthogonal to each other.
  • Said rod (11) includes means for coupling the vibrating handle (12), optionally in the form of a metallic blade, these means represented by two longitudinal slots (11c) equidistant from the ends of said rod (11) and displaced from each other to the along its body and which are responsible for coupling the ends of a vibrating handle (12); each end has two folds for stable fixation on the rod (11), the rest of the final part of the blade (12a) is bent at an angle (a) of 90° and the other fold that goes to the handle (12) has an angle ( b) of 45° (see Figure 3B). It is carried out in the same way with the other end of the handle (12).
  • Said vibrating handle (12) has the function of generating more sound waves by inducing the stimulus suffered by the rod (11) and originated by the vibration of the strings that stimulate the easel of the musical instrument (IT), being, therefore, variables such as : format, width, thickness, weight, material, flexibility and length, closely related to the characterization of the desired sound.
  • the device (10 when mounted on the instrument (IT) (See Figure 5 and respective enlargement details), has its rod (11) positioned perpendicularly between the upper lid (Tl) and the lower lid (T2), preferably positioned so that the groove (11a) is in contact with the central bar (22a) of the harmonic fan (22) of said upper lid (Tl), while the groove (11b) makes contact with the bar (21a) of the lower top (T2).
  • the positioning of the device (10) is not limited to the option described above, as it can be installed discretely displaced in relation to the easel (22b), as long as the rod (11) remains fitted between the tops (Tl) and (T2 ) by the central bar (22a) of the harmonic fan (22) and by the crosspiece (21a).
  • This situation only happens when the easel (22b) is not in the same direction as the crossbeam (21a) (see figure 5).
  • the fitting in the upper part of the rod (11) in the central bar (22a) of the harmonic fan (22) takes place, in the vast majority of cases, under the edge of the easel (22b) and, therefore, in its region of influence.
  • the vibrating handle (12A) is presented in the form of a single blade of reduced width and constant (Ll), but with tapered free ends, this blade passing through three slots (11c) made in the body of the rod (11).
  • the vibrating handle (12A) can be made of synthetic material such as carbon fiber or graphene, or with metallic material or metallic alloy.
  • the vibrating handle (12B) has a constant width (L2) and greater than the width (Ll), and can be made of metal or synthetic material. Said handle (12B) develops an interweaving with the rod (11) in wood or synthetic material, in order to pass through said rod (11) in two slots (11c).
  • the vibrating handle (12C) is formed by cross-linking (El) and (E2) two laminar pieces (12C1) and (12C2) identical to each other and in width (L3 ) similar to the width (Ll), both made of synthetic material and which are superimposed on the rod (11) at the connection point (El).
  • this variation requires precision due to the high number of contact points.
  • the handle (12D) is formed by a pair of blades (12D1) and (12D2) of width (L4) equivalent to the width (L) of the handle (12) that develop the substantial shape of an "S” and that cross, each blade, a corresponding slot (11c) of the rod (11), remaining orthogonal one in relation to the another and equidistant from the ends of the rod (11) in order to configure two points of contact, composing greater security and avoiding undesirable noise.
  • the loop (12E) is formed a pair of blades (12E1) and (12E2) of width (L5) reduced in relation to the width (L4) of the loop (12D) and where each blade (12E1) and (12E2) develops in a helicoid pitch, with each end of the helicoid fixed in a corresponding slot (11c) of the rod (11); said blades (12E1) and (12E2) are spaced apart in order to avoid contact between them, composing a twist and, consequently, greater tension.
  • the vibrating handle (12F) is shaped like a helix of varying width, with its central region having greater width (L6), while the center of the helicoid makes tangential contact with the the entire rod (11); both the rod (11) and the handle (12F) of this version can be made of synthetic material.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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  • Stringed Musical Instruments (AREA)

Abstract

The invention relates to a device (10) for enhancing sound efficiency applied in an acoustic guitar or similar stringed instrument (IT) such as an electric acoustic guitar, ukulele, mandolin, cavaquinho, craviola or acoustic bass; said device (10) for enhancing sound efficiency comprises a structural shaft (11) receiving at least one vibration strap (12) of constant width (L), in which said shaft (11) is arranged perpendicularly between the top (T1) and the back (T2) of the instrument (IT), more specifically in the connection region of the reinforcements (20) formed by the cross member (21a) and the reinforcement of the join (21b) of the back (T2) and by the central bar (22a) of the tone bars (22) and bridge (22b) of the top (T1) that actively radiate the sound waves through the entire instrument (IT); the installation of the device (10) between the reinforcements (20), specifically with the shaft (11) between the top (T1) and back (T2) propagates sound (ps1) through the wooden components of the instrument (IT) and the vibration strap or straps (12) propagate sound (ps2) through the air, the combination of the propagated sound (ps1) with the propagated sound (ps2) enhancing the musical sound of the musical instrument (IT).

Description

"DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR". "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED TO ACOUSTIC GUITAR OR SIMILAR INSTRUMENT".
CAMPO TÉCNICO DA INVENÇÃO TECHNICAL FIELD OF THE INVENTION
[001] A presente patente de invenção trata de dispositivo para potencialização de eficiência sonora aplicado em violão acústico ou instrumento de cordas similar como violão eletroacústico, ukulelê, bandolim, cavaquinho, craviola, baixo acústico e outros onde, notadamente, dito dispositivo é instalado na região de influência do cavalete e encaixado entre reforços estruturais dos tampos superior e inferior do instrumento musical e é compreendido por uma haste estrutural transpassada, ou envolvida, por uma ou mais alça(s) vibratória(s), de forma a harmonizar os tampos através da união pelo contato direto e, portanto, otimizando a propagação das ondas sonoras, além de viabilizar um ganho de potência sonora com qualidade musical. [001] This invention patent deals with a device for enhancing sound efficiency applied to acoustic guitar or similar stringed instrument such as electroacoustic guitar, ukulele, mandolin, cavaquinho, harpsichord, acoustic bass and others where, notably, said device is installed in the easel's influence region and fitted between structural reinforcements of the top and bottom tops of the musical instrument and is comprised of a structural rod pierced, or involved, by one or more vibrating handle(s), in order to harmonize the tops through of union by direct contact and, therefore, optimizing the propagation of sound waves, in addition to enabling a gain in sound power with musical quality.
HISTÓRICO DA INVENÇÃO BACKGROUND OF THE INVENTION
[002] O violão acústico tem, como principal característica estrutural, a previsibilidade de uma caixa de ressonância maior e mais larga, bem como, não possui espaço na caixa para a entrada de cabos elétricos. De uma forma geral, o corpo da caixa é compreendido por um tampo inferior (fundo), laterais e tampo superior onde são montados o cavalete, rastilho, pestana, mão, braço, escala e salto, bem como, as partes internas do dito corpo são compreendidas por taco, leque harmónico composto por barras, estrutura de travessas do fundo, reforço de junção das madeiras do fundo e barras de fechamento. [003] Dita caixa de ressonância apresenta uma abertura denominada como 'boca', normalmente de formato circular e centralizada e a ressonância do som ocorre através de vibrações da madeira e das vibrações que vierem pelo ar, quando tocadas as cordas do violão, cujo formato em '8' possibilita o aparecimento de inúmeros modos de vibração; mencionada ressonância faz com que as amplitudes das ondas sonoras aumentem e o som seja amplificado. [002] The acoustic guitar has, as its main structural characteristic, the predictability of a larger and wider resonance box, as well as, it does not have space in the box for the entry of electrical cables. In general, the body of the box is comprised of a lower top (bottom), sides and top top where the easel, saddle, nut, hand, arm, scale and heel are mounted, as well as the internal parts of said body. are comprised of a batten, a harmonic fan made up of bars, a structure of crossbeams at the bottom, reinforcement at the junction of the wood at the bottom and closing bars. [003] Said resonance box has an opening called a 'mouth', usually circular and centralized in shape and the resonance of the sound occurs through vibrations of the wood and vibrations that come through the air, when the guitar strings are played, whose shape in '8' it allows the appearance of innumerable modes of vibration; mentioned resonance causes the amplitudes of the sound waves to increase and the sound to be amplified.
[004] Nos últimos anos, tem-se buscado melhorias na estrutura interna da caixa de ressonância do violão visando otimizar a sonoridade e a vibração como, por exemplo, a alteração nos tipos de leques harmónicos no tampo superior e disposição de travessas no tampo inferior. Essas alterações consistem, basicamente, na alteração da construtividade dos leques, contudo, sem resultados significativos, sendo que os projetos mais reproduzidos atualmente foram realizados por 'Antônio de Torres' e 'Hermann Hauser'. [004] In recent years, improvements have been sought in the internal structure of the guitar's resonance box in order to optimize the sound and vibration, such as, for example, changing the types of harmonic fans on the top top and arrangement of crossbars on the bottom top . These changes basically consist of changing the constructiveness of the fans, however, without significant results, and the projects most reproduced today were carried out by 'Antônio de Torres' and 'Hermann Hauser'.
[005] Outra forma de melhoria da caixa de ressonância consiste na mudança do local da 'boca' do violão, sendo que em termos de melhora de produção sonora e qualidade musical não se alcançou resultados significativos, alterando tão somente a forma estética diferencial com relação aos modelos convencionais. [005] Another way of improving the soundboard consists of changing the location of the guitar's 'mouth', and in terms of improving sound production and musical quality, no significant results were achieved, changing only the differential aesthetic form in relation to to conventional models.
[006] Adicionalmente, as caixas de ressonância foram confeccionadas em madeiras diferentes e materiais sintéticos e, com isto, se obteve um progresso significativo na produção sonora com a introdução dos tampos “Double top" que utilizam duas lâminas de madeira com o material sintético “kevlar” colado entre elas. Apesar de se obter um aumento do som, musicalmente resultou num efeito um pouco anasalado perceptível que, com alguma relutância, vem sendo aceito pelo mercado. [006] Additionally, the resonance boxes were made of different woods and synthetic materials and, with this, significant progress was achieved in sound production with the introduction of the “Double top" tops that use two wooden blades with the synthetic material “ kevlar" glued between them. Despite obtaining an increase in sound, musically it resulted in a slightly noticeable nasal effect that, with some reluctance, has been accepted by the market.
[007] Outro tipo de material distinto na confecção de caixa de ressonância consiste na fibra de carbono cuja vantagem mais evidente é a contribuição com o meio ambiente por não utilizar madeira, porém, não se conseguiu progresso significativo, nem com relação a sonoridade, e tampouco com a musicalidade adequada. [007] Another type of different material in the manufacture of resonance boxes is carbon fiber, whose most obvious advantage is the contribution to the environment by not using wood, however, no significant progress has been achieved, either in relation to sound, and nor with the proper musicality.
[008] Com os avanços da eletrónica, uma forma encontrada para resolver o problema do volume sonoro e a qualidade musical consiste na previsibilidade dos violões eletroacústicos que apesar de serem acústicos possuem um sistema de amplificação elétrica por meio de microfones internos que são conectados a uma caixa de som por meio de um cabo, porém, o mercado consumidor de música clássica ainda prefere performances acústicas. O motivo é que o ouvido humano percebe qualidades sonoras do instrumento que um alto-falante jamais conseguiu reproduzir com 100% de fidelidade até o presente momento. [008] With the advances in electronics, a way found to solve the problem of sound volume and musical quality is the predictability of electroacoustic guitars that, despite being acoustic, have an electrical amplification system through internal microphones that are connected to a speaker via cable, however, the classical music consumer market still prefers acoustic performances. The reason is that the human ear perceives sound qualities of the instrument that a loudspeaker has never been able to reproduce with 100% fidelity until now.
[009] De outro modo, o 'Tornavoz' compreende um cone confeccionado em metal e instalado na porção interna da boca do violão realçando contrastes tímbricos e a separação de vozes. Entretanto, o volume sonoro não apresenta melhora significativa, uma vez que, direciona o fluxo sonoro e está localizado na região cercada de travessas que inibem a propagação sonora, bem como, a origem da propagação fica na região do cavalete, onde as cordas fazem o tampo vibrar, região essa distante da boca e, por conseguinte, do Tornavoz. Portanto, pode-se concluir que o 'Tornavoz' executa sua função preponderantemente pela vibração sonora que chega até ele pelo ar. Essa propagação "aérea" consegue realçar bem os contrastes tímbricos, mas não basta para aumentar a potência sonora. [009] Otherwise, the 'Tornavoz' comprises a cone made of metal and installed in the inner portion of the soundhole of the guitar, enhancing tonal contrasts and the separation of voices. However, the sound volume does not present a significant improvement, since it directs the sound flow and is located in the region surrounded by sleepers that inhibit sound propagation, as well as the origin of the propagation is in the region of the easel, where the strings make the top vibrate, a region far from the mouth and, therefore, from the Tornavoz. Therefore, it can be concluded that the 'Tornavoz' performs its function mainly through the sound vibration that reaches it through the air. This "aerial" propagation manages to enhance the tonal contrasts well, but it is not enough to increase the sound power.
[010] Da mesma forma, existe no mercado dispositivo que une e harmoniza tampos de instrumentos de arco denominado como 'alma' e, basicamente, é formado por um corpo cilíndrico confeccionado em madeira cujas extremidades se apoiam nas faces internas dos tampos: superior e inferior. [010] Likewise, there is a device on the market that joins and harmonizes bow instrument tops called 'soul' and, basically, is formed by a cylindrical body made of wood whose ends rest on the inner faces of the tops: upper and lower bottom.
[011] Ocorre que, como a estrutura do violão é composta por lâminas de madeira frágeis, a alma não obteve sucesso, uma vez que danifica o tampo. Nos instrumentos de arco, como os tampos são esculpidos e curvos, a estrutura se torna mais resistente e o risco de rachar é bem controlado, enquanto que no violão, até o presente momento, não se encontrou um local adequado para a alma sem ter risco de comprometer a estrutura. [011] It turns out that, as the structure of the guitar is composed of fragile wooden blades, the core was unsuccessful, as it damages the top. In bowed instruments, as the tops are carved and curved, the structure becomes more resistant and the risk of cracking is well controlled, while in the guitar, until now, no suitable place has been found for the soul without risk. compromising the structure.
[012] Desde a criação do violão moderno por Antonio de Torres até os dias atuais o timbre das notas do violão tem ficado mais agudo e brilhante. Isso acontece porque a ressonância fundamental de 'Helmholtz' do violão subiu da região do E5 (659Hz) para a região do G5 (784Hz). Antigamente o timbre era mais rico e profundo, mas a necessidade da indústria em construir instrumentos mais duráveis e robustos obteve esse efeito colateral. [012] Since the creation of the modern guitar by Antonio de Torres to the present day, the timbre of guitar notes has become sharper and brighter. This is because the fundamental 'Helmholtz' resonance of the guitar has risen from the E5 region (659Hz) to the G5 region (784Hz). In the past, the timbre was richer and deeper, but the industry's need to build more durable and robust instruments had this side effect.
ANÁLISE DO ESTADO DA TÉCNICA ANALYSIS OF THE STATE OF THE TECHNIQUE
[013] Em pesquisa realizada em bancos de dados especializados foram encontrados documentos referentes a dispositivo para potencialização de eficiência sonora, tal como, previsto no documento de n^. PI 9704312-5 que trata de alma de cristal cónica para melhoria na acústica dos instrumentos de cordas do tipo de violinos, violas, violoncelos e violões que permite que o som dos instrumentos seja ampliado chegando, inclusive, a melhor a qualidade e apuração de maneira a obter uma excelente sonoridade do instrumento como um todo. [013] In research carried out in specialized databases, documents were found referring to a device for enhancing sound efficiency, as provided for in document n^. PI 9704312-5 which deals with a conical crystal core for improving the acoustics of stringed instruments such as violins, violas, cellos and guitars, which allows the sound of the instruments to be amplified, even reaching the best quality and accuracy in a way to obtain an excellent sound from the instrument as a whole.
[014] O documento de n^. US5567895 apresenta um reverberador de som para um instrumento musical de cordas tendo uma caixa de ressonância e cordas tensionadas sobre um membro de sela de uma peça de ponte conectada a uma parede superior da caixa de ressonância. O reverberador compreende uma ou mais molas pré-tensionadas fixadas internamente à caixa de ressonância. Um membro de transferência metálico é preso a uma extremidade livre da mola internamente da caixa de som. O membro de transferência é deslocado sob as cordas por um elemento de suporte deslocável acionado por dedo para engatar de forma liberável as molas do instrumento musical para transferir vibrações das cordas para uma ou mais molas de metal, de modo a produzir vibrações sonoras internamente da caixa de som para modificar a tonalidade do som gerado pela caixa de ressonância como resultado da colocação das cordas em vibração. [014] Document No. US5567895 features a sound reverberator for a stringed musical instrument having a sounding board and strings tensioned about a saddle member of a bridge piece connected to an upper wall of the sounding board. The reverberator comprises one or more pre-tensioned springs fixed internally to the soundboard. A metallic transfer member is attached to a free end of the spring inside the speaker. The transfer member is moved under the strings by a finger-actuated displaceable support member to releasably engage the springs of the musical instrument to transfer vibrations from the strings to one or more metal springs to produce sound vibrations internally to the case. to modify the tonality of the sound generated by the soundboard as a result of placing the strings in vibration.
[015] O documento de n^. US2006130632 revela um conjunto de ressonador que inclui um ressonador, um coletor- amplificador, bem como uma bandeja de timbre, uma ou mais peças de timbre e um suporte de detector. O ressonador de montagem, destinada a ser acoplável a um convencional violão acústico e melhora a qualidade e volume do convencional. Uma peça de timbre de madeira ou metal ou uma combinação variada das mesmas pode ser usada de acordo com a preferência de som do usuário. O ressoador, o coletor- amplificador, a bandeja do suporte do timbre e o suporte do detector são preferencialmente feitos de latão fino. [015] Document No. US2006130632 discloses a resonator assembly that includes a resonator, a manifold-amplifier, as well as a tone tray, one or more tone pieces, and a detector stand. The assembly resonator, intended to be attachable to a conventional acoustic guitar and improves the quality and volume of the conventional one. A wooden or metal tone piece or a combination thereof can be used according to the user's sound preference. The resonator, collector-amplifier, tone support tray and detector support are preferably made of fine brass.
[016] Assim, é fato que os documentos citados nos parágrafos acima, apesar de pertencerem ao mesmo campo de aplicação, não apresentam nenhuma das características do dispositivo aqui descrito garantindo, assim, que o mesmo atenda aos requisitos legais de patenteabilidade. [016] Thus, it is a fact that the documents cited in the paragraphs above, despite belonging to the same field of application, do not present any of the characteristics of the device described here, thus ensuring that it meets the legal requirements of patentability.
OBJETIVOS DA INVENÇÃO OBJECTIVES OF THE INVENTION
[017] É objetivo da presente invenção apresentar um dispositivo removível para potencialização de eficiência sonora aplicado em violão acústico ou instrumento de corda similar como violão eletroacústico, ukulelê, bandolim, cavaquinho, craviola, e baixo acústico, especialmente, instalado na região de influência do cavalete e entre os reforços estruturais dos tampos do instrumento musical proporcionando união pelo contato direto e, portanto, otimizando a propagação das ondas sonoras, além de viabilizar um ganho de potência sonora com qualidade musical. [017] It is the objective of the present invention to present a removable device for enhancing sound efficiency applied to acoustic guitar or similar string instrument such as electroacoustic guitar, ukulele, mandolin, cavaquinho, harpsichord, and acoustic bass, especially installed in the region of influence of the easel and between the structural reinforcements of the tops of the musical instrument providing union by direct contact and, therefore, optimizing the propagation of sound waves, in addition to enable a sound power gain with musical quality.
[018] Outro objetivo desta invenção é apresentar um dispositivo para potencialização de eficiência sonora compreendido por uma haste estrutural transpassada por uma ou mais alça(s) vibratória(s) que, por sua vez, propaga pelo ar as ondas sonoras de maneira instantânea, guardando suas características de intensidade, e evidenciando a separação das notas. [018] Another objective of this invention is to present a device for enhancing sound efficiency comprising a structural rod pierced by one or more vibrating handle(s) which, in turn, propagates sound waves through the air instantly, keeping its characteristics of intensity, and evidencing the separation of the notes.
[019] É, ainda, objetivo desta invenção apresentar um dispositivo para potencialização de eficiência sonora cuja alça vibratória amplifica as vibrações produzidas pelo movimento das cordas, formando no ar ondas sonoras de amplitude e potência maiores, e realçando cada nota, cada timbre, e conseguindo transmitir ao ouvinte clareza na separação de vozes, com maior duração das notas e vibratos. [019] It is also the objective of this invention to present a device for enhancing sound efficiency whose vibrating handle amplifies the vibrations produced by the movement of the strings, forming sound waves of greater amplitude and power in the air, and enhancing each note, each timbre, and managing to convey to the listener clarity in the separation of voices, with longer duration of notes and vibrato.
[020] É objetivo desta invenção apresentar um dispositivo para potencialização de eficiência sonora cuja haste estrutural harmoniza os tampos superior e inferior pelo contato direto, através dos reforços estruturais do instrumento musical, sendo no tampo inferior o ponto de reforço consiste no cruzamento entre a maior travessa e o reforço da junção longitudinal, enquanto que no tampo superior, é mais um cruzamento, agora entre a barra central do leque harmónico e o cavalete. Ditos reforços, tampo inferior (travessa e reforço da junção) como no tampo superior (barra central do leque harmónico e cavalete), ambos cruzamentos funcionam diretamente na irradiação ativa das ondas sonoras por todo o instrumento. [020] The purpose of this invention is to present a device for enhancing sound efficiency whose structural rod harmonizes the upper and lower tops by direct contact, through the structural reinforcements of the musical instrument, with the lower top being the point of reinforcement consisting of the intersection between the largest crossbeam and reinforcement of the longitudinal joint, while on the top top, it is yet another crossing, now between the central bar of the harmonic fan and the easel. Said reinforcements, lower top (beam and reinforcement of the joint) as in the upper top (central bar of the harmonic fan and easel), both crossings work directly in the active irradiation of the sound waves throughout the instrument.
[021] Esta invenção apresenta, ainda, um dispositivo para potencialização de eficiência sonora cuja haste estrutural apresenta em ambas extremidades sulcos para encaixe firme e estável nos reforços estruturais do instrumento musical. [021] This invention also presents a device for enhancing sound efficiency whose structural rod has grooves at both ends for a firm and stable fit in the structural reinforcements of the musical instrument.
[022] É outro objetivo desta invenção apresentar um dispositivo para potencialização de eficiência sonora que pode ser removível, sendo, assim, conveniente para o estímulo da experimentação com modelos de diferentes medidas, formatos e materiais. [022] It is another objective of this invention to present a device for enhancing sound efficiency that can be removable, thus being convenient for stimulating experimentation with models of different sizes, formats and materials.
[023] Outro objetivo desta invenção consiste no fato do dispositivo para potencialização de eficiência sonora permitir que seja possível encontrar a sonoridade ideal para cada usuário, e até ter dispositivos preferidos para execução específica de gêneros musicais como, por exemplo, dispositivo confeccionado em haste de Abeto e alça vibratória de latão idealizado para interpretar músicas do período barroco ou dispositivo confeccionado em material sintético de fibra de carbono para interpretar músicas modernas, entre outras variações possíveis. [023] Another objective of this invention is the fact that the device for enhancing sound efficiency allows it to be possible to find the ideal sound for each user, and even have preferred devices for specific execution of musical genres, such as, for example, a device made from a rod of fir and vibrating brass handle idealized to interpret music from the baroque period or device made of synthetic carbon fiber material to interpret modern music, among other possible variations.
[024] Outro objetivo desta invenção é a obtenção de sons com timbres ricos e profundos, porque a ressonância fundamental de 'Helmholtz' do instrumento diminui em até dois tons. [024] Another objective of this invention is to obtain sounds with rich and deep timbres, because the fundamental 'Helmholtz' resonance of the instrument decreases by up to two tones.
[025] Finalmente, outro objetivo evidente dessa invenção é reforçar estruturalmente o instrumento. [025] Finally, another obvious objective of this invention is to structurally reinforce the instrument.
DESCRIÇÃO DAS FIGURAS DESCRIPTION OF FIGURES
[026] A complementar a presente descrição de modo a obter uma melhor compreensão das características do presente invento e de acordo com uma preferencial realização prática do mesmo, acompanha a descrição, em anexo, um conjunto de desenhos, onde, de maneira exemplificada, embora não limitativa, se representou seu funcionamento: [026] To complement the present description in order to obtain a better understanding of the characteristics of the present invention and in accordance with a preferred practical implementation thereof, the description is attached to a set of drawings, where, in an exemplified manner, although non-limiting, if it represented its operation:
[027] a figura 1 representa uma vista em perspectiva explodida dos elementos que compõe o dispositivo em questão; [027] Figure 1 represents an exploded perspective view of the elements that make up the device in question;
[028] a figura 2 mostra uma vista em perspectiva montada; [028] Figure 2 shows an assembled perspective view;
[029] as figuras BA e 3B representam vistas frontal e superior do dispositivo; [029] figures BA and 3B represent front and top views of the device;
[030] as figuras 4A e 4B revelam vistas superior e inferior de uma caixa de ressonância de um violão ilustrando o posicionamento do dispositivo para potencialização de eficiência sonora; [030] Figures 4A and 4B show top and bottom views of a guitar resonance box illustrating the positioning of the device to enhance sound efficiency;
[031] a figura 5 mostra um corte longitudinal A. A da caixa de ressonância de um violão ilustrando a montagem do dispositivo em questão; e [031] Figure 5 shows a longitudinal section A. A of the resonance box of a guitar illustrating the assembly of the device in question; and
[032] as figuras 6A, 6B, 6C, 6D, 6E e 6F mostram vistas em perspectiva de variações construtivas da alça vibratória. [032] Figures 6A, 6B, 6C, 6D, 6E and 6F show perspective views of constructive variations of the vibrating handle.
DESCRIÇÃO DA INVENÇÃO DESCRIPTION OF THE INVENTION
[033] Com referência aos desenhos ilustrados, a presente patente de invenção se refere à "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", mais precisamente trata-se de dispositivo (10) para potencialização de eficiência sonora aplicado em violão acústico ou instrumento de corda similar (IT) como violão eletroacústico, ukulelê, bandolim, cavaquinho, craviola, e baixo acústico. [033] With reference to the illustrated drawings, this patent refers to the "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED IN ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", more precisely it is a device (10) for enhancement of sound efficiency applied in acoustic guitar or similar string instrument (IT) such as electro-acoustic guitar, ukulele, mandolin, cavaquinho, harpsichord, and acoustic bass.
[034] Segundo a presente invenção, dito dispositivo (10) para potencialização de eficiência sonora é compreendido por haste estrutural (11) confeccionada em madeira ou material sintético receptora de pelo menos uma alça vibratória (12), confeccionada em lâmina de metal, latão ou equivalente e de largura (L) constante, onde dita haste (11) é disposta de forma perpendicular entre os tampos superior (Tl) e inferior (T2) do instrumento (IT) (ver Figuras 4A, 4B e 5), mais precisamente na região de conexão dos reforços (20) formados pela travessa (21a) e reforço da junção (21b) do tampo inferior (T2) e pela barra central (22a) e cavalete (22b) do tampo superior (Tl) que compõe a irradiação ativa das ondas sonoras por todo o instrumento (IT) (ver figuras 4A e 4B). [035] O comprimento (cl) da haste estrutural (11) apresenta-se prolongado entre 4 a 8% maior em relação à distância (dl) prevista entre a cristã da travessa (21a) e a barra central (22a) do leque harmónico (22) do instrumento (IT), preferencialmente 5,5% para que as extremidades da haste (11) não encostem nas delgadas madeiras dos tampos. [036] O comprimento (cl) da haste (11) se encaixa entre o fundo dos sulcos (lla)/(llb) sendo apresentado entre 0,5 à 1% maior em relação à distância (dl) prevista entre as cristãs: i) da travessa (21a), e ii) da barra central (22a) do leque harmónico (22) do instrumento (IT), preferencialmente 0,7% para estabilidade da dita haste (11) quando da montagem entre os reforços (20), dispensando meios auxiliares de fixação como parafusos, pinos e outros. No fundo dos sulcos acontece o contato para encaixe firme e estável do dispositivo (10) em função do acréscimo de 0,5 a 1 % em relação à distância (dl). [034] According to the present invention, said device (10) for enhancing sound efficiency is comprised of a structural rod (11) made of wood or synthetic material receiving at least one vibrating handle (12), made of metal sheet, brass or equivalent and of constant width (L), where said rod (11) is arranged perpendicularly between the upper (Tl) and lower (T2) tops (T2) of the instrument (IT) (see Figures 4A, 4B and 5), more precisely in the connection region of the reinforcements (20) formed by the crosspiece (21a) and reinforcement of the junction (21b) of the lower top (T2) and by the central bar (22a) and easel (22b) of the upper top (Tl) that make up the irradiation activity of sound waves throughout the instrument (IT) (see figures 4A and 4B). [035] The length (cl) of the structural rod (11) is extended between 4 to 8% greater in relation to the distance (dl) expected between the Christian of the transom (21a) and the central bar (22a) of the harmonic fan (22) of the instrument (IT), preferably 5.5% so that the ends of the rod (11) do not touch the thin wood of the tops. [036] The length (cl) of the rod (11) fits between the bottom of the grooves (lla)/(llb) being presented between 0.5 to 1% greater in relation to the distance (dl) expected between the Christians: i ) of the crosspiece (21a), and ii) of the central bar (22a) of the harmonic fan (22) of the instrument (IT), preferably 0.7% for stability of said rod (11) when assembling between the reinforcements (20) , dispensing with auxiliary means of fixation such as screws, pins and others. At the bottom of the grooves, contact is made for a firm and stable fit of the device (10) due to the increase of 0.5 to 1% in relation to the distance (dl).
[037] Citado dispositivo (10), quando instalado entre os reforços (20), especificamente, com a haste (11) que harmoniza e contata diretamente os tampos (Tl) e (T2) permitindo a propagação sonora (psl) pelas madeiras do instrumento (IT), enquanto que a propagação sonora (ps2) pelo ar é executada pela(s) alça(s) vibratória(s) (12). A associação da propagação sonora (psl) com a propagação sonora (ps2) configura potência sonora com qualidade musical do instrumento musical (IT). [037] Said device (10), when installed between the reinforcements (20), specifically, with the rod (11) that harmonizes and directly contacts the tops (Tl) and (T2) allowing sound propagation (psl) through the wood of the instrument (IT), while sound propagation (ps2) through the air is performed by the vibrating handle(s) (12). The association of sound propagation (psl) with sound propagation (ps2) configures sound power with the musical quality of the musical instrument (IT).
[038] Tanto a haste (11) quanto a alça vibratória (12) podem ser confeccionados em materiais diversos e a combinação dos materiais distintos configura uma sonoridade específica para execução de gêneros musicais peculiares como, por exemplo: haste (11) confeccionada em abeto associada à alça(s) vibratória(s) (12) confeccionada em latão para interpretar músicas do período barroco ou haste (11) confeccionada em material sintético de fibra de carbono ou grafeno associada à alças vibratórias também de material sintético, para interpretar músicas contemporâneas, entre outras possibilidades. [038] Both the rod (11) and the vibrating handle (12) can be made in different materials and the combination of different materials configures a specific sonority for the execution of peculiar musical genres, for example: rod (11) made of spruce associated with vibrating handle(s) (12) made of brass to interpret music from the baroque period or rod (11) made of synthetic carbon fiber or graphene material associated with vibrating handles also made of synthetic material, to play contemporary music, among other possibilities.
[039] Numa primeira versão construtiva preferencial (Figuras 1 e 2), a haste (11) apresenta formato cilíndrico cujas porções extremas são planas e ortogonais em relação ao eixo longitudinal e cada uma delas possui um respectivo sulco (11a) e (11b) ortogonais entre si. [039] In a first preferred constructive version (Figures 1 and 2), the rod (11) has a cylindrical shape whose extreme portions are flat and orthogonal to the longitudinal axis and each of them has a respective groove (11a) and (11b) orthogonal to each other.
[040] Dita haste (11) inclui meios de acoplamento da alça vibratória (12), opcionalmente na forma de lâmina metálica, meios estes representados por dois rasgos longitudinais (11c) equidistantes das extremidades da dita haste (11) e deslocados entre si ao longo do corpo da mesma e que são responsáveis pelo acoplamento das extremidades de uma alça vibratória (12); cada extremidade tem duas dobras para fixação estável na haste (11), sendo a sobra da parte final da lâmina (12a) é dobrada em ângulo (a) de 90° e a outra dobra que segue para a alça (12) tem ângulo (b) de 45° (ver Figura 3B). Executa-se da mesma forma com a outra extremidade da alça (12). [040] Said rod (11) includes means for coupling the vibrating handle (12), optionally in the form of a metallic blade, these means represented by two longitudinal slots (11c) equidistant from the ends of said rod (11) and displaced from each other to the along its body and which are responsible for coupling the ends of a vibrating handle (12); each end has two folds for stable fixation on the rod (11), the rest of the final part of the blade (12a) is bent at an angle (a) of 90° and the other fold that goes to the handle (12) has an angle ( b) of 45° (see Figure 3B). It is carried out in the same way with the other end of the handle (12).
[041] Citada alça vibratória (12) tem a função de gerar mais ondas sonoras por indução do estímulo sofrido pela haste (11) e originado pela vibração das cordas que estimulam o cavalete do instrumento musical (IT), sendo, portanto, variáveis como: formato, largura, espessura, peso, material, flexibilidade e o comprimento, intimamente relacionadas para a caracterização do som almejado. [041] Said vibrating handle (12) has the function of generating more sound waves by inducing the stimulus suffered by the rod (11) and originated by the vibration of the strings that stimulate the easel of the musical instrument (IT), being, therefore, variables such as : format, width, thickness, weight, material, flexibility and length, closely related to the characterization of the desired sound.
[042] O dispositivo (10), quando montado no instrumento (IT) (Ver Figura 5 e respectivos detalhes de ampliação), tem sua haste (11) posicionada perpendicularmente entre o tampo superior (Tl) e o tampo inferior (T2), preferencialmente posicionada de maneira que o sulco (11a) fique em contato com a barra central (22a) do leque harmónico (22) do dito tampo superior (Tl), enquanto que o sulco (11b) faz contato com a barra (21a) do tampo inferior (T2). [043] O posicionamento do dispositivo (10) não está limitado à opção descrita acima, pois pode ser instalado discretamente deslocado em relação ao cavalete (22b), desde que a haste (11) permaneça encaixada entre os tampos (Tl) e (T2) pela barra central (22a) do leque harmónico (22) e pela travessa (21a). Essa situação só acontece quando o cavalete (22b), não se encontra na mesma direção da travessa (21a) (ver figura 5). Entretanto o encaixe na parte superior da haste (11) na barra central (22a) do leque harmónico (22) se dá, na enorme maioria dos casos, sob a margem do cavalete (22b) e, portanto, em sua região de influência. [042] The device (10), when mounted on the instrument (IT) (See Figure 5 and respective enlargement details), has its rod (11) positioned perpendicularly between the upper lid (Tl) and the lower lid (T2), preferably positioned so that the groove (11a) is in contact with the central bar (22a) of the harmonic fan (22) of said upper lid (Tl), while the groove (11b) makes contact with the bar (21a) of the lower top (T2). [043] The positioning of the device (10) is not limited to the option described above, as it can be installed discretely displaced in relation to the easel (22b), as long as the rod (11) remains fitted between the tops (Tl) and (T2 ) by the central bar (22a) of the harmonic fan (22) and by the crosspiece (21a). This situation only happens when the easel (22b) is not in the same direction as the crossbeam (21a) (see figure 5). However, the fitting in the upper part of the rod (11) in the central bar (22a) of the harmonic fan (22) takes place, in the vast majority of cases, under the edge of the easel (22b) and, therefore, in its region of influence.
[044] Tendo em vista as variáveis que pode determinar o tipo de alça vibratória (12) e a título de exemplo numa segunda variação construtiva (ver figura 6A) a alça vibratória (12A) apresenta-se na forma de lâmina única de largura reduzida e constante (Ll), porém com extremidades livres afuniladas, lâmina esta que traspassa três rasgos (11c) praticados no corpo da haste (11). A alça vibratória (12A) pode ser confeccionada em material sintético como fibra de carbono ou grafeno, ou com material metálico ou liga metálica. [044] In view of the variables that can determine the type of vibrating handle (12) and as an example in a second constructive variation (see figure 6A) the vibrating handle (12A) is presented in the form of a single blade of reduced width and constant (Ll), but with tapered free ends, this blade passing through three slots (11c) made in the body of the rod (11). The vibrating handle (12A) can be made of synthetic material such as carbon fiber or graphene, or with metallic material or metallic alloy.
[045] Numa terceira variação construtiva (ver figura 6B), a alça vibratória (12B) tem largura constante (L2) e maior que a largura (Ll), podendo ser confeccionada em metal ou material sintético. Dita alça (12B) desenvolve um entrelaçamento com a haste (11) em madeira ou material sintético, de forma a transpassar a dita haste (11) em dois rasgos (11c). [045] In a third constructive variation (see figure 6B), the vibrating handle (12B) has a constant width (L2) and greater than the width (Ll), and can be made of metal or synthetic material. Said handle (12B) develops an interweaving with the rod (11) in wood or synthetic material, in order to pass through said rod (11) in two slots (11c).
[046] Numa quarta variação construtiva (ver figura 6C), a alça vibratória (12C) é formada pelo enlaçamento cruzado (El) e (E2) de duas peças laminares (12C1) e (12C2) idênticas entre si e de largura (L3) similar à largura (Ll), ambas confeccionadas em material sintético e que são sobrepostas à haste (11) no ponto de enlace (El). Para impedir a geração de ruídos paralelos indesejáveis, essa variação requer precisão devido ao número elevado de pontos de contato. [046] In a fourth constructive variation (see figure 6C), the vibrating handle (12C) is formed by cross-linking (El) and (E2) two laminar pieces (12C1) and (12C2) identical to each other and in width (L3 ) similar to the width (Ll), both made of synthetic material and which are superimposed on the rod (11) at the connection point (El). To prevent the generation of undesirable parallel noise, this variation requires precision due to the high number of contact points.
[047] Numa quinta variação construtiva (ver figura 6D), a alça (12D) é formada por um par de lâminas (12D1) e (12D2) de largura (L4) equivalente à largura (L) da alça (12) que se desenvolvem ao formato substancial de um "S" e que transpassam, cada lâmina, um correspondente rasgo (11c) da haste (11), mantendo-se ortogonais uma em relação à outra e equidistantes das extremidades da haste (11) de maneira a configurarem dois pontos de contato compondo maior segurança e evitando ruídos indesejáveis. [047] In a fifth constructive variation (see figure 6D), the handle (12D) is formed by a pair of blades (12D1) and (12D2) of width (L4) equivalent to the width (L) of the handle (12) that develop the substantial shape of an "S" and that cross, each blade, a corresponding slot (11c) of the rod (11), remaining orthogonal one in relation to the another and equidistant from the ends of the rod (11) in order to configure two points of contact, composing greater security and avoiding undesirable noise.
[048] Numa sexta variação construtiva (ver figura 6E), a alça (12E) é formada um par de lâminas (12E1) e (12E2) de largura (L5) reduzida em relação a largura (L4) da alça (12D) e onde cada lâmina (12E1) e (12E2) se desenvolve num passo de helicoide, tendo, cada extremidade da helicoide fixada em corresponde rasgo (11c) da haste (11); ditas lâminas (12E1) e (12E2) são afastadas entre si de maneira a evitar o contato entre as mesmas, compondo uma torção e, consequentemente, maior tensão. [048] In a sixth constructive variation (see figure 6E), the loop (12E) is formed a pair of blades (12E1) and (12E2) of width (L5) reduced in relation to the width (L4) of the loop (12D) and where each blade (12E1) and (12E2) develops in a helicoid pitch, with each end of the helicoid fixed in a corresponding slot (11c) of the rod (11); said blades (12E1) and (12E2) are spaced apart in order to avoid contact between them, composing a twist and, consequently, greater tension.
[049] Numa sétima variação construtiva (ver figura 6F), a alça vibratória (12F) apresenta formato em hélice de largura variada, sendo que sua região central apresenta maior largura (L6), enquanto que o centro da helicoide faz contato tangencial com a toda a haste (11); tanto a haste (11) quanto a alça (12F) desta versão pode ser confeccionada em material sintético. [049] In a seventh constructive variation (see figure 6F), the vibrating handle (12F) is shaped like a helix of varying width, with its central region having greater width (L6), while the center of the helicoid makes tangential contact with the the entire rod (11); both the rod (11) and the handle (12F) of this version can be made of synthetic material.
[050] É certo que quando o presente invento for colocado em prática, poderão ser introduzidas modificações no que se refere a certos detalhes de construção e forma, sem que isso implique afastar-se dos princípios fundamentais que estão claramente substanciados no quadro reivindicatório, ficando assim entendido que a terminologia empregada não teve a finalidade de limitação. [050] It is certain that when the present invention is put into practice, modifications may be introduced with regard to certain details of construction and shape, without this implying a departure from the fundamental principles that are clearly substantiated in the set of claims, being it is therefore understood that the terminology used was not intended to be limiting.

Claims

REIVI NDICAÇÕES
1) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", mais precisamente trata-se de dispositivo (10) para potencialização de eficiência sonora aplicado em violão acústico ou instrumento de corda similar (IT) como violão eletroacústico, ukulelê, bandolim, cavaquinho, craviola, e baixo acústico; caracterizado por dispositivo (10) para potencialização de eficiência sonora ser compreendido por haste estrutural (11) receptora de pelo menos uma alça vibratória (12) de largura (L) constante, onde dita haste (11) é disposta de forma perpendicular entre os tampos superior (Tl) e inferior (T2) do instrumento (IT), mais precisamente na região de conexão dos reforços (20) formados pela travessa (21a) e reforço da junção (21b) do tampo inferior (T2) e pela barra central (22a) do leque harmónico (22) e cavalete (22b) do tampo superior (Tl) que compõe a irradiação ativa das ondas sonoras por todo o instrumento (IT); a instalação do dispositivo (10) entre os reforços (20), especificamente, com a haste (11) entre os tampos (Tl) e (T2) compõe a propagação sonora (psl) pelas madeiras do instrumento (IT) e propagação sonora (ps2) pelo ar que é executada pela(s) alça(s) vibratória(s) (12), sendo a associação da propagação sonora (psl) com a propagação sonora (ps2) configura potência sonora com qualidade musical do instrumento (IT). 1) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED TO ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", more precisely, it is a device (10) for enhancement of sound efficiency applied to acoustic guitar or similar string instrument (IT) such as electroacoustic guitar, ukulele , mandolin, cavaquinho, craviola, and acoustic bass; characterized in that a device (10) for enhancing sound efficiency is comprised of a structural rod (11) receiving at least one vibrating handle (12) of constant width (L), where said rod (11) is arranged perpendicularly between the tops upper (Tl) and lower (T2) of the instrument (IT), more precisely in the region of connection of the reinforcements (20) formed by the crosspiece (21a) and reinforcement of the junction (21b) of the lower top (T2) and by the central bar ( 22a) of the harmonic fan (22) and easel (22b) of the upper top (Tl) that make up the active irradiation of sound waves throughout the instrument (IT); the installation of the device (10) between the reinforcements (20), specifically, with the rod (11) between the tops (Tl) and (T2) composes the sound propagation (psl) through the woods of the instrument (IT) and sound propagation ( ps2) by the air that is performed by the vibrating handle(s) (12), and the association of sound propagation (psl) with sound propagation (ps2) configures sound power with musical quality of the instrument (IT) .
2) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1, caracterizado por haste estrutural (11) ser confeccionada em madeira ou material sintético. 2) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED TO ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1, characterized in that the structural rod (11) is made of wood or synthetic material.
3) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1, caracterizado por alça vibratória (12) ser confeccionada em material sintético, lâmina de metal, latão ou equivalente. 3) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED TO ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1, characterized in that the vibrating handle (12) is made of synthetic material, metal sheet, brass or equivalent.
4) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1, caracterizado por comprimento (cl) da haste estrutural (11) apresentar-se prolongado entre 4 a 8% maior em relação à distância (dl) prevista entre a cristã da travessa (21a) e a barra central (22a) do leque harmónico (22) do instrumento (IT), preferencialmente 5,5% para que as extremidades da haste (11) não encostem nas delgadas madeiras dos tampos. 4) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED ON ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1, characterized in that the length (cl) of the structural rod (11) is extended between 4 to 8% greater than the distance (dl) expected between the crossbeam (21a) and the central bar (22a) of the harmonic fan (22) of the instrument (IT), preferably 5.5% so that the ends of the rod (11) do not touch the thin wood of the tops.
5) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1, caracterizado por comprimento (cl) da haste (11) se encaixar entre o fundo dos sulcos (lla)/(llb), sendo apresentado entre 0,5 à 1% maior em relação à distância (dl) prevista entre a cristã da travessa (21a) e a barra central (22a) do leque harmónico (22) do instrumento (IT), preferencialmente 0,7% para estabilidade da dita haste (11) quando da montagem entre os reforços (20); no fundo dos sulcos acontece o contato para encaixe firme e estável do dispositivo (10) em função do acréscimo de 0,5 a 1 % em relação à distância (dl). 5) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED TO ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1, characterized in that the length (cl) of the rod (11) fits between the bottom of the grooves (lla)/(llb) , being presented between 0.5 to 1% greater in relation to the distance (dl) foreseen between the Christian crosspiece (21a) and the central bar (22a) of the harmonic fan (22) of the instrument (IT), preferably 0.7 % for stability of said rod (11) when assembling between the reinforcements (20); at the bottom of the grooves, contact is made for a firm and stable fit of the device (10) depending on the increase of 0.5 to 1% in relation to the distance (dl).
6) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1, caracterizado por dispositivo (10), quando montado no instrumento (IT) ter sua haste (11) posicionada entre o tampo superior (Tl) e o tampo inferior (T2) onde o sulco (11a) fica em contato com a barra central (22a) do leque harmónico (22) do dito tampo superior (Tl), enquanto que o sulco (11b) faz contato com a barra (21a) do tampo inferior (T2). 6) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED IN ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1, characterized in that the device (10), when mounted on the instrument (IT) has its rod (11) positioned between the upper lid (Tl) and the lower lid (T2) where the groove (11a) is in contact with the central bar (22a) of the harmonic fan (22) of said upper lid (Tl), while the groove (11b) makes contact with the bar (21a) of the lower lid (T2).
7) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com as reivindicações 1 a 5 e numa primeira versão construtiva, caracterizado por haste (11) apresentar formato cilíndrico cujas porções extremas são planas e ortogonais em relação ao eixo longitudinal e cada uma delas possui um respectivo sulco (11a) e (11b) ortogonais entre si; dita haste (11) inclui meios de acoplamento da alça vibratória (12) na forma de lâmina metálica, meios estes representados por ao menos dois rasgos longitudinais (11c) equidistantes das extremidades da dita haste (11) e deslocados entre si ao longo do corpo da mesma e que são responsáveis pelo acoplamento das duas extremidades da alça vibratória (12); na sobra final de cada extremidade (12a) a dobrada tem ângulo (a) de 90° e cada dobra que vai para a alça vibratória (12) tem ângulo (b) de 45°. 8) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com as reivindicações 1 a 7, caracterizado por haste (11) encaixada entre os tampos (Tl) e (T2) pela barra central (22a) do leque harmónico (22) e pela travessa (21a) ensejar na instalação do dispositivo (10) deslocado em relação ao cavalete (22b), de modo que o cavalete (22b) se encontre na mesma direção da travessa (21a); o encaixe na parte superior da haste (11) na barra central (22a) do leque harmónico (22) se dá, sob a margem do cavalete (22b) e em sua região de influência. 7) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED ON ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claims 1 to 5 and in a first constructive version, characterized in that the rod (11) has a cylindrical shape whose extreme portions are flat and orthogonal in relation to to the longitudinal axis and each one of them has a respective groove (11a) and (11b) orthogonal to each other; said rod (11) includes means for coupling the vibrating handle (12) in the form of a metallic blade, these means represented by at least two longitudinal slots (11c) equidistant from the ends of said rod (11) and displaced along the body thereof and which are responsible for coupling the two ends of the vibrating handle (12); in the final overhang of each end (12a) the bend has an angle (a) of 90° and each bend that goes to the vibrating handle (12) has an angle (b) of 45°. 8) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED ON ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claims 1 to 7, characterized by a rod (11) fitted between the tops (Tl) and (T2) by the central bar (22a) of the harmonic fan (22) and the crosspiece (21a) leading to the installation of the device (10) displaced in relation to the easel (22b), so that the easel (22b) is in the same direction as the crosspiece (21a); the fitting in the upper part of the rod (11) in the central bar (22a) of the harmonic fan (22) takes place, under the margin of the easel (22b) and in its region of influence.
9) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1 e numa segunda variação construtiva da alça vibratória (12), caracterizado por alça vibratória (12A) apresentar-se na forma de lâmina única de largura reduzida e constante (Ll), porém com extremidades livres afuniladas, lâmina esta que transpassa três rasgos (11c) praticados no corpo da haste (ll);a alça vibratória (12A) pode ser confeccionada em material sintético como fibra de carbono, grafeno ou com material metálico ou liga metálica. 9) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED IN ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1 and in a second constructive variation of the vibrating handle (12), characterized by the vibrating handle (12A) being in the form of a blade only one of reduced and constant width (Ll), but with tapered free ends, this blade that passes through three slots (11c) made in the body of the rod (ll); the vibrating handle (12A) can be made of synthetic material such as carbon fiber , graphene or with metallic material or metallic alloy.
10) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1 e numa terceira variação construtiva da alça vibratória (12), caracterizado por alça vibratória (12B) ter largura constante (L2) e maior que a largura (Ll), podendo ser confeccionada em metal ou material sintético; dita alça (12B) desenvolve um entrelaçamento com a haste (11) em madeira ou material sintético, de forma a transpassar a dita haste (11) em dois rasgos (11c). 10) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED IN ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1 and in a third constructive variation of the vibrating handle (12), characterized by the vibrating handle (12B) having constant width (L2) and greater than the width (Ll), and may be made of metal or synthetic material; said handle (12B) develops an interweaving with the rod (11) in wood or synthetic material, in order to pass through said rod (11) in two slots (11c).
11) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1 e numa quarta variação construtiva da alça vibratória (12), caracterizado por alça vibratória (12C) ser formada pelo enlaçamento cruzado (El) e (E2) de duas peças laminares (12C1) e (12C2) idênticas entre si e de largura (L3) similarà largura (Ll), ambas confeccionadas em material sintético e que são sobrepostas à haste (11) no ponto de enlace (El). 12) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1 e numa quinta variação construtiva da alça vibratória (12), caracterizado por alça (12D) serformada por um par de lâminas (12D1) e (12D2) de largura (L4) equivalente à largura (L) da alça (12) que se desenvolvem ao formato substancial de um "S" e que transpassam, cada lâmina, um correspondente rasgo (11c) da haste (11), mantendo-se ortogonais uma em relação à outra e equidistantes das extremidades da haste (11) de maneira a configurarem dois pontos de contato. 11) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED IN ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1 and in a fourth constructive variation of the vibrating loop (12), characterized in that the vibrating loop (12C) is formed by cross-linking (El ) and (E2) of two laminar pieces (12C1) and (12C2) identical to each other and with a width (L3) similar to the width (Ll), both made of synthetic material and which are superimposed on the rod (11) at the connection point ( El). 12) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED IN ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1 and in a fifth constructive variation of the vibrating handle (12), characterized in that the handle (12D) is formed by a pair of blades (12D1 ) and (12D2) of width (L4) equivalent to the width (L) of the handle (12) that develop in the substantial shape of an "S" and that cross, each blade, a corresponding slot (11c) of the rod (11) , remaining orthogonal to each other and equidistant from the ends of the rod (11) so as to configure two points of contact.
13) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1 e numa sexta variação construtiva da alça vibratória (12), caracterizado por alça (12E) ser formada um par de lâminas (12E1) e (12E2) de largura (L5) reduzida em relação a largura (L4) da alça (12D) e onde cada lâmina (12E1) e (12E2) se desenvolve num passo de helicoide, tendo, cada extremidade da helicoide fixada em corresponde rasgo (11c) da haste (11); ditas lâminas (12E1) e (12E2) são afastadas entre si. 13) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED IN ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1 and in a sixth constructive variation of the vibrating handle (12), characterized in that the handle (12E) is formed by a pair of blades (12E1 ) and (12E2) in width (L5) reduced in relation to the width (L4) of the loop (12D) and where each blade (12E1) and (12E2) develops in a helicoid pitch, with each end of the helicoid fixed in corresponding tear (11c) of the rod (11); said blades (12E1) and (12E2) are spaced apart from each other.
14) "DISPOSITIVO PARA POTENCIALIZAÇÃO DE EFICIÊNCIA SONORA APLICADO EM VIOLÃO ACÚSTICO OU INSTRUMENTO SIMILAR", de acordo com a reivindicação 1 e numa sétima variação construtiva da alça vibratória (12), caracterizado por alça vibratória (12F) apresentar formato em hélice de largura variada, sendo que sua região central apresenta maior largura (L6), enquanto que o centro da helicoide faz contato tangencial com a toda a haste (11); tanto a haste (11) quanto a alça (12F) podem ser confeccionada em materiais sintéticos diferentes ou, também, do mesmo material. 14) "DEVICE FOR ENHANCEMENT OF SOUND EFFICIENCY APPLIED ON ACOUSTIC GUITAR OR SIMILAR INSTRUMENT", according to claim 1 and in a seventh constructive variation of the vibrating handle (12), characterized by the vibrating handle (12F) having a helix shape of varying width , and its central region presents greater width (L6), while the center of the helicoid makes tangential contact with the entire rod (11); both the rod (11) and the handle (12F) can be made of different synthetic materials or, also, of the same material.
PCT/BR2021/050278 2021-06-24 2021-06-24 Device for enhancing sound efficiency applied in acoustic guitar or similar instrument WO2022266732A1 (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695783A (en) * 1927-04-21 1928-12-18 Ralph W Stephenson Sound post for violins
GB510489A (en) * 1938-09-19 1939-08-02 Robert Bullough An improved soundpost for violins and the like musical instruments
GB922978A (en) * 1961-07-04 1963-04-03 Emile Peter Phillips Sound post for stringed musical instruments
US4026181A (en) * 1975-07-07 1977-05-31 Barcus Lester M Tension rod
BR9704312A (en) * 1997-09-29 1999-06-15 Silva Pinhel Eduardo Da Conical-shaped crystal core with wooden support at the ends aiming at improving the sound perfection in stringed musical instruments such as violin viola violancelo and guitar
US20040129127A1 (en) * 2001-07-09 2004-07-08 Mercer James A. Violin with enhanced components
CN201051375Y (en) * 2007-05-15 2008-04-23 高磊 Improved guitar resonance box
KR20150033499A (en) * 2013-09-23 2015-04-01 주식회사 고퍼우드 Functional folk guitar
BR112013029386A2 (en) * 2011-05-15 2017-01-31 Miltimore Michael acoustic string instrument
US9570051B1 (en) * 2015-09-28 2017-02-14 Dwaine Moore Organic sound texture enhancement and bridge strengthening system for acoustic guitars and other stringed instruments
US10475421B1 (en) * 2018-10-22 2019-11-12 Globalbell Group String Consultant Co., Ltd. Adjusting member and sound post applied thereto

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695783A (en) * 1927-04-21 1928-12-18 Ralph W Stephenson Sound post for violins
GB510489A (en) * 1938-09-19 1939-08-02 Robert Bullough An improved soundpost for violins and the like musical instruments
GB922978A (en) * 1961-07-04 1963-04-03 Emile Peter Phillips Sound post for stringed musical instruments
US4026181A (en) * 1975-07-07 1977-05-31 Barcus Lester M Tension rod
BR9704312A (en) * 1997-09-29 1999-06-15 Silva Pinhel Eduardo Da Conical-shaped crystal core with wooden support at the ends aiming at improving the sound perfection in stringed musical instruments such as violin viola violancelo and guitar
US20040129127A1 (en) * 2001-07-09 2004-07-08 Mercer James A. Violin with enhanced components
CN201051375Y (en) * 2007-05-15 2008-04-23 高磊 Improved guitar resonance box
BR112013029386A2 (en) * 2011-05-15 2017-01-31 Miltimore Michael acoustic string instrument
KR20150033499A (en) * 2013-09-23 2015-04-01 주식회사 고퍼우드 Functional folk guitar
US9570051B1 (en) * 2015-09-28 2017-02-14 Dwaine Moore Organic sound texture enhancement and bridge strengthening system for acoustic guitars and other stringed instruments
US10475421B1 (en) * 2018-10-22 2019-11-12 Globalbell Group String Consultant Co., Ltd. Adjusting member and sound post applied thereto

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