Alpenhorn Acoustic Modification via External Composite Coating
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Solution Overview
Problem
Conventional alphorns have a limited sound range due to their uniform construction, and there is a need to expand the range of sounds produced.
Innovation Solution
An additional material, such as leather, cloth, or rubber, is applied externally to the alphorn tube, covering at least two-thirds of its length, to influence the sound pattern, and can be attached using adhesives or wrapping techniques, while a protective lacquer is optionally used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional uniform construction is used, then manufacturing simplicity is maintained, but sound range is limited
Solution Approach 1:
The patent applies composite materials by combining the traditional alphorn tube with additional materials (leather, hide, cloth, rubber, or other natural or man-made materials) wrapped around the tube. This composite structure modifies the acoustic properties to expand the sound range while maintaining the basic alphorn construction
Solution Approach 2:
The patent implements local quality by applying additional materials to specific sections of the alphorn tube rather than uniformly throughout. The additional material can be applied to different portions of the tube to create specific tonal characteristics in different regions, allowing for localized sound modification
2Adaptability or versatility
If additional material is applied to influence sound, then sound range is expanded, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-preparing additional materials (leather, hide, cloth, rubber strips) before attaching them to the alphorn tube. These materials can be prepared in advance with appropriate dimensions and properties, making the manufacturing process more systematic and easier to execute
Solution Approach 2:
The patent employs inexpensive materials such as leather strips, cloth, or rubber that can be easily obtained and applied. These materials serve their acoustic function and can be replaced or adjusted without requiring complex manufacturing processes or expensive components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The external material significantly alters the tonal character of the alphorn, enhancing its sound range and quality by modifying the acoustic properties of the instrument.
Implementation Method 1
an additional material is arranged outside of the alphorn tube... the additional material covering essentially the entire circumference encloses at least one tube section of the alphorn tube... the additional material significantly alters the tonal character of the alphorn, enhancing its sound range and quality by modifying the acoustic properties of the instrument
Data Source
Figure 1~5
AI summary
The alphorn has an alphorn pipe (101) made of wood or plastic. An additional material is arranged outside the alphorn pipe, and includes a material as a material of the alphorn pipe, a shoot of a rattan palm, and a protective paint. A layer of the alphorn around the alphorn pipe is formed by the additional material. A rattan is attached on the alphorn pipe. The additional material is attached on an outer circumference of the rattan by an adhesive technique e.g. gluing technique, or a fastening technique e.g. winding technique. The additional material is leather, fur, substance, rubber, plastic, or organic substance.