Resonance Podium with Isolated Spruce Panel
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Solution Overview
Problem
Conventional podiums for musical instruments, such as cellos, have poor acoustical designs and materials that negatively affect the sound quality by emphasizing only the lowest harmonics and failing to adequately project upper frequencies, leading to dull and unproductive acoustic contributions.
Innovation Solution
A resonance podium design featuring a resonant panel made of lightweight materials like European Sitka spruce, braced with laminated layers of wood and synthetic materials, which is mechanically coupled to the endpin of the cello to amplify structurally-transmitted vibrations and project them acoustically, while being isolated from the performer's body to prevent detrimental effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional podiums use hollow wooden box design with plywood materials, then visual aesthetics and portability are improved, but acoustical quality deteriorates by emphasizing only lowest harmonics and failing to project upper frequencies
Solution Approach 1:
The patent applies composite materials by combining plywood structural components with a resonant panel made of acoustically optimized materials. The resonant panel is specifically designed with particular thickness, density, and bracing patterns to enhance acoustic projection across the full frequency range, while the plywood box provides structural support and portability. This composite approach resolves the contradiction by integrating materials that serve different functions - structural integrity versus acoustic optimization.
Solution Approach 2:
The podium is segmented into distinct functional components: the hollow plywood box structure for portability and visual aesthetics, and a separate resonant panel for acoustic optimization. The resonant panel is further segmented with specific bracing patterns (ribs) that divide the panel into zones optimized for different frequency ranges. This segmentation allows each component to be optimized independently for its specific function while working together as a unified system.
2Strength
If podium top panel supports performer's feet and chair/bench, then structural support is improved, but detrimental vibrations from performer are transmitted to the panel reducing acoustic projection
Solution Approach 1:
The harmful function of the top panel is extracted and removed. Instead of having the resonant panel directly support the performer's feet and chair/bench, the patent introduces a separate platform or isolation layer that supports the performer while allowing the resonant panel to focus exclusively on projecting the instrument's vibrations. This extraction eliminates the transmission of detrimental vibrations from the performer to the acoustic system.
Solution Approach 2:
An intermediary structure is introduced between the performer and the resonant panel. This intermediary platform provides the necessary structural support for the performer's weight and chair/bench while being acoustically isolated from the resonant panel. The intermediary acts as a mediator that allows structural support function to coexist with acoustic optimization by preventing the transmission of harmful vibrations.
3Device complexity
If podium emphasizes only lowest harmonics, then simplicity of design is improved, but clarity and projection of upper frequencies deteriorates making sound dull
Solution Approach 1:
The resonant panel is designed with local quality variations through strategic placement of ribs and bracing elements at specific locations and orientations. Different zones of the panel have different stiffness, mass, and damping characteristics optimized for specific frequency ranges. Lower frequency zones have different structural properties than upper frequency zones, allowing the panel to effectively project across the full spectrum without requiring complex electronic processing or overly complicated结构设计.
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 resonance podium enhances the acoustic projection of the cello by effectively amplifying the structurally-transmitted vibrations, improving the clarity and presence of the sound, particularly in the mid to high frequency range, and providing a stable platform for the performer.
Implementation Method 1
resonance podium for enhancing the acoustical properties of musical instruments
Data Source
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AI summary
A resonance podium includes a plurality of walls defining a frame of the resonance podium. A top panel is coupled to the plurality of walls to form a top surface that supports a performer playing a musical instrument on the resonance podium. A resonant panel is also coupled to the plurality of walls and isolated from the top panel. The resonant panel is configured to receive a portion of the musical instrument and to project structurally-transmitted vibrations from the musical instrument for acoustical amplification.