DE102022001061A1 - Device for decoupling the scale length and the sound transmission on a resonance body - Google Patents

Abstract

1. Currently, the sound transmission to the resonance body and thus the scale specification on the body side is implemented undividedly via a bridge.a. If an optimization of the sound transmission to the sound box is to be set, this will in most cases lead to an incorrect scale length of the musical instrument.b. If the scale length needs to be corrected, this will in most cases result in sub-optimal sound transmission to the resonance body.2. By separating the bridge into two independent components, an optimal adjustment of the scale length and an optimal positioning of the sound transmission to the resonance body can be set independently of one another.3. This device is used to separate the scale length from the sound transmission to a resonance body when building musical instruments.

Description

Illustrations

• Acoustic guitar: bridge (6) glued in place, scale length fixed
• Bass-Saz: bridge not glued, movable, scale length adjustable
• Bass-Saz: An exemplary use
• Acoustic guitar: exemplary use
• : a) A bridge, b) Scale bridge (6) and resonance transmitter (3)

Description

In stringed and stick instruments, the strings (4) are stretched over a saddle (11) and bridge (6) and thus determine the possible scale length or fretting, i.e. the positions of the fret bar (8) on a fingerboard. The strings are tensioned via the string fastening (10) and saddle (11). The positions of the saddle (11) and the bridge (6) simultaneously determine the scale length of a musical instrument.

For many stringed and stick instruments, the position of the bridge and the position of the saddle are determined after the instrument is completed. This specifies the scale or mathematical division of the fret on the fingerboard.

On some string and bowed instruments, the bridge (and also the fret) is adjustable. Every time you change the bridge, the string lengths and thus the distribution of the fret on the fingerboard change. The determination of the scale length for a given string length is explained in detail in specialist books.

The sound is transmitted to the resonance body (5) via the bridge (6) on the resonance body (5). When the bridge is moved, the sound transmission point to the resonance body (5) also shifts, making the current scale length mathematically incorrect.

Given the current state of technology, the position of the lower bridge must combine both the optimal sound transmission point and the optimal scale length. For example, in the Saz (oriental stringed instrument), the position of the lower bridge is determined using a rough formula: The position of the bridge is from the lower connection of the strings by % to 1/5 of the body length (14) or in other specialist books using a formula of the golden Section determined. The scale length of the musical instrument is then determined and tied to the fingerboard. An optimal positioning of the bar is defined based on experience.

With this state of the art it is assumed that the optimal point for the sound transmission and the optimal point for the string length are the same.

This problem is solved by the “separation of the scale length from the sound transmission to a resonance body (5)” listed in claim 1.

For this purpose, the following definition of terms is defined in advance for a better understanding. In this patent, the term “bridge” of the current technical status is divided into “scale length bridge” and “resonance transmitter”.

1. i. Vorteile durch die Verschiebbarkeit des Resonanzüberträgers bei festem Steg:
   1. 1. Eine Optimierung der Klanggüte eines Musikinstruments durch eine beliebige Positionierung der Tonübertragung auf den Resonanzkörper (5) ohne Verstellung der Mensur ist damit möglich. Es können Untersuchungen der Klangübertragung auf den Resonanzkörper (5) erfolgen, ohne dabei die Mensur verstellen zu müssen.
   2. 2. Es ist eine unabhängige Gestaltung des Resonanzkörpers (5) von der Länge des Saiteninstruments möglich. Z. B. eine Gitarre mit dem Korpus einer Gitarre für 59er Mensur könnte für 65er oder 54er Mensur verwendet werden. Die Korpusgröße und Griffbrett mit voller Mensur kann unabhängig von der menschlichen Physiologie (Armlänge, Körpergröße) realisiert werden.
2. ii. Vorteile durch die Verschiebbarkeit des Stegs bei festem Resonanzüberträger:
   1. 1. Eine Anwendung beliebiger Grifflängen (auch Standardlängen) für ein mögliches optimiertes (z. B. krampffreies) Instrumentenspiel wird dadurch möglich. Z. B. ein kürzeres Griffbrett (15) für die Instrumente bei gleich bleibender Anzahl benötigter Bunde (Noten/Frequenzen) ist realisierbar.
   2. 2. Eine Erhöhung und Minderung der Anzahl an Bunden pro Griff kann dadurch erlangt werden.

Advantages through the realization of claim 1:

1. i. Advantages due to the movability of the resonance transformer with a fixed bridge:
   1. 1. It is therefore possible to optimize the sound quality of a musical instrument by arbitrarily positioning the sound transmission to the resonance body (5) without adjusting the scale length. Investigations into the sound transmission to the resonance body (5) can be carried out without having to adjust the scale length.
   2. 2. It is possible to design the resonance body (5) independently of the length of the string instrument. For example, a guitar with the body of a 59 scale guitar could be used for a 65 or 54 scale scale. The body size and fingerboard with full scale can be realized regardless of human physiology (arm length, body size).
2. ii. Advantages due to the movability of the bridge with a fixed resonance transformer:
   1. 1. This makes it possible to use any handle length (including standard lengths) for possible optimized (e.g. cramp-free) playing of the instrument. For example, a shorter fingerboard (15) for the instruments with the same number of required frets (notes/frequencies) can be implemented.
   2. 2. An increase and decrease in the number of frets per handle can be achieved thereby.

1. i. Orientalische Instrumente mit großem Korpus (14) haben meistens langes Griffbrett (16) und sind daher unkomfortabel zu spielen. Beispielsweise wird ein Bass-Saz ( ) mit einem 45cm Korpus (16), 43cm Griffbrett (16), die Position des Resonanzüberträgers (3) von 10,62cm über den goldenen Schnitt ermittelt. Die Position des Resonanzüberträgers(3) wird aktuell von der unteren Saitenbefestigung (10) aus auf dem Korpusrand (7) gesetzt. Damit würde sich beim aktuellen Einsatz, also Mensur-Steg(6)-Position gleich Resonanzüberträger(3)-Position, die Soll-Mensur 77,38cm ergeben. Das Griffbrett hat demnach hier eine Länge von 32,38cm. Die Position des Resonanzüberträgers (3) bleibt in den folgenden Anwendungen erhalten.
   • 3. Anwendung des Patentanspruchs 1: Bei Beibehaltung der Mensur von 77,38cm kann durch die Verschiebung des Stegs(6) zur Saitenbefestigung um bis zu 10,62cm ein Griffbrett von der Länge 21,76cm erzielt werden.
   • 4. Anwendung des Patentanspruchs 1: Bei Verkürzung der Mensur auf z. B. 70cm und einer Reduzierung des Griffbretts um bis zu 10,62cm ein Griffbrett von der Länge 14,38cm von erzielt werden.
   • 5. Anwendung des Patentanspruchs 1: Bei Verlängerung der Mensur auf z. B. 85cm und einer Reduzierung des Griffbretts um bis zu 10,62cm ein Griffbrett von der Länge 29,38cm von erzielt werden.

Practical advantages when implemented on a string instrument

1. i. Oriental instruments with large bodies (14) usually have long fingerboards (16) and are therefore uncomfortable to play. For example, a bass saz ( ) with a 45cm body (16), 43cm fingerboard (16), the position of the resonance transformer (3) of 10.62cm was determined using the golden ratio. The position of the resonance transmitter (3) is currently set from the lower string attachment (10) on the body edge (7). This would result in the target scale length of 77.38cm for the current use, i.e. the scale length bridge (6) position is the same as the resonance transmitter (3) position. The fingerboard here has a length of 32.38cm. The position of the resonance transmitter (3) is retained in the following applications.
   • 3. Application of claim 1: While maintaining the scale length of 77.38cm, a fingerboard with a length of 21.76cm can be achieved by moving the bridge (6) for attaching the strings by up to 10.62cm.
   • 4. Application of claim 1: When shortening the scale length to e.g. B. 70cm and a reduction of the fingerboard by up to 10.62cm, a fingerboard with a length of 14.38cm can be achieved.
   • 5. Application of claim 1: When extending the scale length to e.g. B. 85cm and a reduction of the fingerboard by up to 10.62cm, a fingerboard with a length of 29.38cm can be achieved.

Claims (1)

A device for separating the scale length from the sound transmission to a resonance body (5), the current lower bridge of a string instrument which is used for the sound transmission to a resonance body (5) and at the same time for fixing the scale length, divided into: 1.1. Scale bar (6), which transmits the sound to the resonance body (5) via the resonance transmitter (3) and is only used for the scale in this device. 1.2. Resonance transmitter (3), which transmits the sound (vibrations of the strings (4)) from the scale bridge (6) to the resonance body (5). In the case of mechanical transmission, this occurs via the direct contact of the resonance transmitter (3) on the resonance body (5). The Claim 1 is independent of this constructive suggestion. An embodiment of the invention is in the and shown. In these example illustrations there is a single sound transmission point as a resonance transmitter (3) on the resonance body (5). The resonance transmitter (3) will be structurally attached to the edge of the instrument (7) without further contact with the resonance body (5). The scale bar (6) can be moved or fixed on the resonance transmitter (3).