Asymmetric Horn Barrel Speaker Module for Mobile Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing speaker modules for mobile terminals have high manufacturing costs, low high-frequency performance, and insufficient frequency band range due to the use of sound absorbing materials and limited resonance peaks.
Innovation Solution
A speaker module design featuring asymmetrically arranged first and second horn barrels with varying lengths, sizes, and shapes, which are connected to the speaker box and mobile terminal sound output ports, allowing for multi-order resonance peak coupling without the need for sound absorbing materials, thereby improving high-frequency performance and expanding frequency band range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sound absorbing material is added to the attenuation cavity, then the resonance peak is improved, but the manufacturing cost increases and high-frequency radiation capability is weak
Solution Approach 1:
The invention removes the sound absorbing material from the attenuation cavity, extracting the problematic element that increased manufacturing cost while maintaining acoustic performance through the asymmetric horn barrel design
Solution Approach 2:
The invention employs asymmetric horn barrels with different lengths and structures to improve high-frequency radiation capability and bandwidth without requiring sound absorbing materials, thereby reducing manufacturing cost while enhancing resonance performance
2Reliability
If the pipe of the horn barrel is lengthened, then the number of resonance peaks is improved, but the high-frequency radiation capability remains weak and bandwidth is insufficient
Solution Approach 1:
The invention uses asymmetric horn barrels where the first horn barrel has a different length than the second horn barrel, creating multiple resonance peaks while improving high-frequency radiation capability through the asymmetric configuration rather than simply lengthening both horns
Solution Approach 2:
The invention addresses the limitation of single-dimension horn length adjustment by introducing asymmetric design in multiple dimensions, including different horn lengths, shapes, and configurations, thereby achieving both multiple resonance peaks and improved high-frequency radiation capability
3Reliability
If attenuation cavity and horn barrel are distinguished by baffles, then acoustic performance and space utilization are improved, but the number of resonance peaks is few and high-frequency performance is limited
Solution Approach 1:
The invention replaces the baffle-based symmetric design with an asymmetric horn barrel configuration, where the first and second horn barrels have different lengths and structures, thereby generating more resonance peaks and improving high-frequency performance while maintaining space utilization
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 speaker module enhances high-frequency performance and widens the frequency band range while reducing manufacturing costs by utilizing horn barrels with different dimensions to supplement frequency response peaks and valleys, offering improved acoustic performance compared to conventional designs.
Implementation Method 1
a first horn barrel with an opening connecting with the first sound output opening and another opening connecting with the sound output port of the mobile terminal; and a second horn barrel an opening connecting with the second sound output opening and another opening connecting with the sound output port of the mobile terminal. The first horn barrel and the second horn barrel are arranged asymmetrically with respect to the speaker box
Data Source
AI summary
The present invention provides a speaker module for a mobile terminal provided with a sound output port. The speaker module includes a speaker box. The speaker box includes a first sound output opening and a second sound output opening. A speaker module also includes a first horn barrel and a second horn barrel. The first horn barrel and the second horn barrel are arranged asymmetrically with respect to the speaker box. The speaker module in the present invention realizes the multi-order coupling of the resonance peak, which not only improves the high-frequency performance, but also widens the frequency band range, and at the same time, reduces the manufacturing cost.