Speaker Module Extension Segment Chamber Geometry
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Solution Overview
Problem
In electronic devices with small form factors, the constraint on speaker module size limits the effective volume of the casing, leading to increased low-frequency resonant frequency, degraded low-pitched sound performance, and enhanced distortion, which negatively impacts sound quality.
Innovation Solution
A speaker module design featuring a housing with a main segment and an extension segment forming a chamber, where a modulating unit is positioned to adjust the acoustic characteristics, using materials like polyurethane, foam rubber, or active carbon, and optimizing the length ratios within the chamber to enhance sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the casing volume is increased to improve low-frequency response, then the low-pitched sound performance is improved, but the overall device size increases which is not acceptable in small electronic devices
Solution Approach 1:
The extension segment is nested within the housing structure, extending from the main segment to create additional chamber volume without proportionally increasing the overall device footprint. This allows the speaker chamber to effectively contain more volume while maintaining a compact external form factor suitable for small electronic devices.
Solution Approach 2:
The extension segment extends in a direction away from the main segment, utilizing three-dimensional space more efficiently. By adding volume in an extended dimension rather than uniformly expanding all dimensions, the design achieves greater internal chamber volume while constraining the overall device envelope, thus improving low-frequency response without proportionally increasing device size.
2Volume of moving object
If the casing volume is decreased to reduce device size, then the device becomes more compact, but the low-frequency resonant frequency increases degrading sound quality
Solution Approach 1:
The extension segment is nested within the housing structure, extending from the main segment to create additional chamber volume without proportionally increasing the overall device footprint. This allows the speaker chamber to effectively contain more volume while maintaining a compact external form factor suitable for small electronic devices.
Solution Approach 2:
The design changes the geometric parameters of the speaker chamber by adding an extension segment with specific length and cross-sectional area. This modifies the effective volume and acoustic characteristics of the chamber, allowing optimization of the low-frequency resonant frequency while maintaining a compact device size. The extension segment's dimensions are specifically designed to achieve the desired acoustic performance.
3Volume of moving object
If the casing volume is decreased, then the device size is reduced, but distortion of the speaker increases
Solution Approach 1:
The extension segment is nested within the housing structure, extending from the main segment to create additional chamber volume without proportionally increasing the overall device footprint. This allows the speaker chamber to effectively contain more volume while maintaining a compact external form factor suitable for small electronic devices.
Solution Approach 2:
The extension segment extends in a direction away from the main segment, utilizing three-dimensional space more efficiently. By adding volume in an extended dimension rather than uniformly expanding all dimensions, the design achieves greater internal chamber volume while constraining the overall device envelope, thus reducing speaker distortion through improved acoustic characteristics.
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 design improves low-frequency response and reduces distortion, achieving better sound quality by optimizing the chamber geometry and material selection within the speaker module.
Implementation Method 1
The modulating unit is arranged to correspond to the extension segment and is positioned in the housing. The shape of a cross section of the modulating unit is compatible with the shape of a cross section of the extension segment
Data Source
AI summary
A speaker module is provided. The speaker module includes a housing, a speaker unit, and a modulating unit. The housing has a main segment and an extension segment connecting to the main segment and extending away from the main segment, the main segment and the extension segment communicate with each other and form a chamber. The speaker unit is disposed in the housing in a position that is relative to the main segment. The modulating unit is arranged to correspond to the extension segment and is positioned in the housing. The shape of a cross section of the modulating unit is compatible with the shape of a cross section of the extension segment, and a length between the speaker unit and the modulating unit along the chamber is greater than 0.