DE102007014269A1 - Bridge insert for string instrument e.g. guitar, has curve from point of desired beginning of vibrating string and corresponding to string, where insert is broader of about two millimeters and string hits on insert after striking it - Google Patents

Abstract

The insert has a curve from a point of a desired beginning of a vibrating string is provided, where the curve corresponds to the vibrating string, and the insert is broader of about two millimeter. The string hits on the insert after striking it. Two parts are provided and the curves are folded away by a person so that normal acoustic characteristics can occur. The curves can be turned by a person so that a soft surface contacts the strings such that damping tone or poor upper tone is developed.

Description

at the previous webs for Stringed instruments such as guitars and pianos, the swinging Part of the string not in contact come with the jetty. As a result, less energy is transmitted to the sound body and achieved a relatively low-pitched, quiet sound. Also have been so far No presets on the jetty for the change the acoustic properties possible.

The present innovation relates to a bridge for stringed instruments, in terms of overtone richness, timbre variety and the volume represents an improvement.

starting point for the Innovation is the fact that a string where it rests firmly at least vibrates and in the middle of the swinging string am furthest. If the string resting on a bridge, short after this point on an almost parallel below the string attached Stember extension hits after the string vibrates was, much more energy is transferred to the sound body. The way this way vibrating sounding body This also brings the bridge and the strings back into vibration (natural Feedback), so that the sound can even swell after the attack. If this Stegerweiterung is still hollow, in the form of an additional small Orchestra, she is even louder.

a Much of the time for My research I have used to improve the Achieve acoustic properties in the smallest space on the bridge (so that no impurity arises on the guitar) when reached a nice sound. It depends on fractions of a millimeter, whether a clattering, or a nice one buzzing sound emerges. The Stegerweiterung can be arbitrarily long below the strings run. The direct contact to the vibrating string but should only be one millimeter and only at the beginning the vibrating string can take place.

• Einstellung a.) wie oben beschrieben. Ein lauter, obertonreicher, summender oder leicht sirrender Ton entsteht. (1; 5; 6; 7)
• Einstellung b.) die Stegerweiterung wurde durch drehen des Schraubgewindes, bzw. durch herunterklappen oder Verschieben, vom Kontakt mit der Saite entfernt, wodurch die gewöhnlichen akustischen Eigenschaften wieder hergestellt sind. (2)
• Einstellung c.) ein Stück Filz auf der Oberseite der Stegerweiterung wird an die Saite gedrückt, wodurch ein gedämpfter Ton erzielt wird. (3)

Another crucial innovation is the various setting options on the bridge, because the Stegerweiterung can be separated from the other part of the bridge and be moved by means of screw threads, sliding wedges or hinges. This allows two or three different settings with very different acoustic results.

• Setting a.) As described above. A loud, rich in overtones, buzzing or slightly buzzing sound emerges. ( 1 ; 5 ; 6 ; 7 )
• Adjustment b.) The stem extension has been removed from the contact with the string by turning the screw thread, or by folding down or shifting, whereby the usual acoustic properties are restored. ( 2 )
• Adjustment c.) A piece of felt on top of the stiffener extension is pressed against the string, resulting in a muted tone. ( 3 )

at Pianos is the setting option c) already state of the art. They are also available for guitars. But not up this way and above all not with the possibility of combination with attitude a) which is much more important as they are the acoustic Properties increases and not as in c) reduced.

For the in the claims featured innovation there are different models and applications, of which I will list some below.

Resonant strings, as in 4 , are louder with the harmonic bridge and more overtone than usual.

Also Pianos can be equipped with this Obertonsteg advantageous, the can then be operated with the help of a fourth pedal. For example, could thus for the first time the timbre still changed the stop.

Manufacturers of stringed instruments could from the outset equip and improve their instruments with the adjustable upper bridge. 5 shows this with the example of such a bridge for acoustic guitars. This model has the advantage that visually almost no difference to conventional webs can be seen, especially if the settings are not as in 5 be made with a screwdriver, but when the screws go through wooden turntables that look out only a few millimeters and with which a part of the bridge can be raised and lowered.

Instruments like guitars can also be used by laymen with the upper tone bridge ( 1 ) and overtone extensions ( 6 and 7 ) can be retrofitted.

This in 7 Model shown consists of two boards, which are connected by screws. A slightly wedge-shaped beam, which runs almost across all strings and is anchored only on one side with a pin in the lower board, pushes the boards apart. The crossbeam has been pushed a little to the left in this illustration, whereby the upper board is lifted. When the bar is again placed right across the strings, the board lowers again and contact with the string is no longer possible, but it should remain in contact with the other part of the bridge, because then, as with all these models , additional vibration from the bridge transmitted directly to the sound, but less like the other setting.

LIST OF REFERENCE NUMBERS

1

• Overtone bridge in one piece with the example of a guitar
• 1 : Ordinary guitar bridge
• 2 : Overtone bridge insert
• 3 : String entry side downwards arched surface of the bridge insert
• 4 : The overtone amplifying, almost parallel to the string running, but slightly laterally sloping surface saitenaustrittsseitig.
• 5 : Straight surface parallel to the string on which the string rests firmly.

2

• Special brick insert with three possible settings
• In this setting, the sound altering surface is folded down by one ordinary To achieve guitar sound
• 1 : First pair of hinges
• 2 : Pair of hinges

3

• The same model as 2 ,
• Setting for steamed sound
• 1 : The felt-bonded side is folded up and touches the string

4

• Harmonic bridge for Resonant strings (simplified presentation with few strings)
• 1 : Tuning peg
• 2 : Resonating strings that go under the playing strings
• 3 : Overtone bridge

5

• From above with a screwdriver adjustable Oberertonsteg. Side view.
• 1 : String
• 2 : By a screw is the surface which amplifies the overtones adjustable.
• 3 : Screw

6

• Side view of the top adjustable with a screwdriver Obertonstegerweiterung, with each acoustic guitar to be retrofitted can.

7

• Side view of another model as described below.

Claims (3)

Obertonsteg (bridge insert or Stegerweiterung) for guitars, pianos and other stringed instruments, characterized in that almost parallel to the string, right after the part of the bridge where the string rests firmly, is an extension of the bridge on which the string when in vibration is offset, slightly impinges; especially if this extension is mechanically adjustable, whereby the volume, the tone color and the overtone wealth can be changed. The different settings can be in different models the Oberertonstegs as under claim 1 are realized: e.g. by adjustable screws; through hinges and flaps; by sliding Wedges. a) This allows the Stegerweiterung of contact me the string are removed, reducing the normal acoustic properties are restored, b) and also a muted sound can be achieved by placing a soft surface (e.g., cloth) on the strings presses Stegerweiterung as under claim 1, in which this An additional orchestras forms.