Speaker Partition Wall for Sound Zone Isolation
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Solution Overview
Problem
Small speakers face challenges in simultaneously enhancing the output quality of high-pitched and low-pitched sounds due to the difficulty in effectively isolating and managing sound waves within a single sound-producing unit.
Innovation Solution
A speaker design featuring a partition wall that separates the speaker into high-pitched and low-pitched sound zones, with specific arrangements of side through holes and a central hole, allowing each sound type to be transmitted within its respective zone, reducing harmonic distortion by controlling the area coverage and airflow distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single sound-producing unit is used in small speakers, then the device complexity is reduced, but the sound quality for both high-pitched and low-pitched sounds deteriorates
Solution Approach 1:
The single sound-producing unit is segmented into two independent sound chambers (high-pitched sound chamber and low-pitched sound chamber) within the same speaker body. Each chamber contains its own sound-producing element and acoustic path, allowing independent optimization of high and low frequency sound output while maintaining a compact single-unit design.
2Reliability
If the total sum area of side through holes covered by the partition wall is increased, then the isolation between high-pitched and low-pitched sound zones is improved, but the airflow distribution and harmonic distortion are worsened
Solution Approach 1:
The partition wall features non-uniform distribution of side through holes with different areas at different locations. The covered side through holes have a total area that is 10-30% of the uncovered side through holes' total area, creating localized acoustic characteristics that optimize both sound zone isolation and airflow distribution to minimize harmonic distortion.
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 design improves sound quality by minimizing harmonic distortion and enhancing the separation of sound waves, resulting in better output quality for both high-pitched and low-pitched sounds.
Implementation Method 1
The partition wall is coupled with the frame to form a boundary between a high-pitched sound zone and a low-pitched sound zone, wherein a total sum area of the side through holes covered by the partition wall is smaller than a total sum area of the side through holes uncovered by the partition wall
Implementation Method 2
the shape of the side through holes of the frame and a total sum area difference between the high and low pitched sound zones, thereby reducing the total harmonic distortion ratio and improving output quality for both sounds
Data Source
AI summary
A speaker includes a frame and a partition wall. The frame has ribs to define a central through hole and plural side through holes. The partition wall is coupled with the frame to form a boundary between a high-pitched sound zone and a low-pitched sound zone, wherein a total sum area of the side through holes covered by the partition wall is smaller than a total sum area of the side through holes uncovered by the partition wall.