Inclined Reflection Surface for Keyboard Sound Balance
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Solution Overview
Problem
Conventional electronic instruments, such as electronic organs, face challenges in providing a balanced and effective sound reflection to the player, particularly in the high-pitched sound range, due to the orientation of sound-emitting surfaces and reflection plates, which can lead to reduced sound uniformity and player experience.
Innovation Solution
The electronic keyboard instrument incorporates a configuration with a low-pitched sound emitting unit and a high-pitched sound emitting unit, flanked by reflection units with inclined reflection surfaces towards the high-pitched sound emitting unit, enhancing sound reflection and balance by directing high-pitched sounds towards the player while minimizing low-pitched sound reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a reflection plate is provided on the sound emitting side of the loudspeaker to reflect high-pitched sounds, then the audience can listen to played sounds in a better condition including high-pitched sounds, but the sound uniformity and balance are reduced due to improper orientation of the reflection plate
Solution Approach 1:
The reflection plate is designed with an asymmetric inclined surface that is angled specifically towards the high-pitched sound emitting unit. This asymmetric configuration allows the plate to selectively reflect high-pitched sounds towards the audience while allowing low-pitched sounds to pass through or be reflected differently, thus improving high-pitched sound intensity without compromising overall sound uniformity and balance.
2Quantity of substance
If the reflection plate is positioned to reflect sounds from both low-pitched and high-pitched emitting units, then all sounds are reflected to the audience, but the balance between low-pitched and high-pitched sounds is lost
Solution Approach 1:
The reflection plate is positioned and angled to create different reflection characteristics for different sound frequencies. The inclined surface is specifically oriented to reflect high-pitched sounds effectively while having minimal impact on low-pitched sound reflection. This local quality differentiation allows the system to maintain sound balance by treating different frequency ranges differently, with the plate primarily enhancing high-pitched sound reflection.
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
This configuration ensures a well-balanced and uniform sound delivery to the player, improving the overall sound experience by efficiently reflecting high-pitched sounds and controlling low-pitched sound distribution, thereby enhancing the instrument's acoustic performance.
Implementation Method 1
a reflection unit having a reflection surface configured to reflect a sound and provided between the low-pitched sound emitting unit and the high-pitched sound emitting unit in the casing
Data Source
AI summary
An electronic instrument includes a casing, a controller having multiple operation elements provided in connection with the casing and aligned in a left-right direction of the casing, a sound emitting unit including a low-pitched sound emitting unit provided on a first side in the left-right direction in the casing and configured to emit a low-pitched sound and a high-pitched sound emitting unit provided on a second side in the left-right direction in the casing and configured to emit a high-pitched sound, and a reflection unit having a reflection surface configured to reflect a sound and provided between the low-pitched sound emitting unit and the high-pitched sound emitting unit in the casing, and the reflection unit is configured such that the reflection surface is inclined towards the high-pitched sound emitting unit with respect to the left-right direction.