Ultra-High Violin String Material for Extended Pitch Range
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Solution Overview
Problem
Conventional stringed instruments, such as violins, violas, and cellos, are limited by their structural design and material composition, which restrict their pitch range, making it challenging to produce high notes without compromising sound quality.
Innovation Solution
A five-string musical instrument equipped with an ultra-high string made of materials with a tensile stress-to-density ratio (A) of at least 350 MPa/(g/cm³), allowing it to produce higher frequencies, with additional features like a dedicated groove and reinforced ends to prevent breakage and slippage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional string materials are used, then the instrument structure remains simple and reliable, but the pitch range is limited and high notes cannot be produced without compromising sound quality
Solution Approach 1:
The patent applies parameter changes by selecting string materials with specific physical properties - particularly high tensile stress-to-density ratio (A ≥ 350 MPa/(g/cm³)). This parameter selection enables the string to vibrate at ultra-high frequencies while maintaining adequate tension, thereby expanding the instrument's pitch range without requiring fundamental structural changes to the instrument body
Solution Approach 2:
The patent employs composite materials by combining different material layers or structures within the string construction. This composite approach allows optimization of both tensile strength and density characteristics, achieving the required A ratio while maintaining structural integrity and sound quality across the extended pitch range
2Speed
If the string tension is increased to produce higher pitches, then the frequency increases, but the string may break or slip
Solution Approach 1:
The patent utilizes parameter changes by optimizing the tensile stress-to-density ratio of the string material. Materials with A ≥ 350 MPa/(g/cm³) can sustain the high tensions required for ultra-high frequency vibration while maintaining adequate safety margins against breakage, thus enabling high pitches without compromising reliability
Solution Approach 2:
The patent applies beforehand cushioning through reinforced string ends and optimized anchoring configurations. These preventive measures are built into the string construction to protect against breakage and slippage before they occur, ensuring reliability during high-tension ultra-high pitch performance
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
Enables musicians to play high notes effortlessly while maintaining sound quality, extending the instrument's pitch range beyond conventional limits.
Implementation Method 1
A = σ max /ρ ≥ 350 MPa/(g/cm 3σ max represents the maximum tensile stress in the material of the ultra-high string
Implementation Method 2
A musical instrument is a tool used to produce music. It converts energy into vibrations, producing sound waves. These vibrations occur at specific frequencies, determining the pitch of the sound.
Data Source
Figure 1(a)~1(b)
Figure 2~3
Figure 4~5(b)
AI summary
The five-string musical instrument (1) includes at least one ultra-high string (2e) that comprises at least one material wherein: A=σmaxρ≥350MPag/cm3 with σmax being a maximum tensile stress of said material and with ρ being a density of said material. An ultra-high open string pitch is obtained. The instrument may be a full-size five-string violin with a string vibrating length of approximately 325 mm, capable of providing an open string note of SI/B-5 and a frequency of about 990 Hz with a ratio A of the ultra-high string being at least 414 MPa/(g/cm3).