Resonator Tube with Compressor Tubes for Stringed Instruments
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Solution Overview
Problem
Residual air within the sound box of stringed musical instruments restricts harmonic production, leading to reduced sound clarity, volume, and uniform sound projection due to turbulences and blocked vibrations.
Innovation Solution
A resonator with an elongated tubular element and compressor tubes is mounted on the lower block of the instrument, featuring a beveled intake and diffuser reed, which evacuates residual air by increasing air speed and reducing pressure, allowing complete vibration of instrument plates and improved harmonic production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sound box is sealed with inherent holes only, then the instrument structure is simple, but residual air blocks inside the sound box causing turbulences and preventing complete vibration of plates
Solution Approach 1:
The resonator divides the air evacuation function into multiple components: the elongated tubular element provides the main evacuation path, while compressor tubes create localized compression zones, and holes along the tube provide distributed air release points. This segmentation allows efficient residual air removal without overly complicating the overall instrument structure.
Solution Approach 2:
The resonator acts as an intermediary device between the sound box interior and exterior environment. It mediates the evacuation of residual air by creating a controlled flow path that reduces pressure and removes trapped air without directly modifying the sound box structure or interfering with string vibration.
2Manufacturing precision
If residual air is blocked inside the sound box, then the instrument structure remains simple, but harmonic production is restricted and sound clarity is reduced
Solution Approach 1:
The resonator extracts the harmful residual air from the sound box by providing a dedicated evacuation path. The elongated tubular element with holes along its length actively removes trapped air, separating the air removal function from the sound production function, thereby improving sound clarity without requiring complete redesign of the instrument.
Solution Approach 2:
The resonator applies local quality improvement by creating specific zones of air compression and evacuation at strategic locations within the sound box. The compressor tubes and holes are positioned to target residual air pockets, improving harmonic production and sound clarity in specific areas without affecting the overall instrument structure.
3Productivity
If the resonator uses compressor tubes and diffuser reed, then air speed increases and pressure reduces for better sound projection, but the device complexity increases
Solution Approach 1:
The resonator incorporates dynamic elements including the diffuser reed that responds to air pressure variations, and compressor tubes that create variable compression zones. These dynamic components automatically adjust to the playing conditions, enhancing sound projection and volume without requiring complex control mechanisms or external power sources.
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 solution enhances sound clarity, volume, timbre quality, and ease of performance by eliminating residual air, reducing wolf tones and improving sound projection.
Implementation Method 1
the strings vibrate and transmit those vibrations to the resonance chamber, inside which airflow is produced due to the pressure variation determined by the strength applied to the strings
Implementation Method 2
the said airflow emerges as sound through the inherent holes of the instrument
Implementation Method 3
a reed working on a diffuser near the exit end
Implementation Method 4
one or more compressor tubes fitted into the main tube around the middle
Implementation Method 5
the strings vibrate and transmit those vibrations to the resonance chamber
Implementation Method 6
producing turbulences and cramming which prevents the top and bottom plates of the instrument from wholly vibrating, thus reducing the production of harmonics
Data Source
AI summary
A resonator for stringed musical instruments with a resonance chamber, is suitable for both bowed and plucked stringed instruments with a resonance chamber which aims at increasing the volume as well as the sound projection and timbre quality of the instrument, thus improving its performance, by eliminating the residual air which remains inside the sound box. For that purpose, the resonator comprises a tube with a beveled inlet end and an exit end with an end-button, one or more holes at various angles to reduce the air intake pressure, together with one or more compressor tubes included inside which interfere with the balance variation of air pressure and speed towards the exit across a reed.