High- and Low-Pitch Sound Module for Thinner Electronics
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Solution Overview
Problem
The challenge of maintaining acoustic performance in sound generating devices as electronic products become thinner and smaller, leading to structural design constraints that affect sound quality.
Innovation Solution
A sound generating device module design where high-pitch and low-pitch sound generating units share a frame, with distinct sound output directions and optimized magnetic gaps and diaphragms, utilizing space efficiently to reduce volume while enhancing acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the volume of electronic components is compressed to make the device thinner and smaller, then the size of the sound generating device module is reduced, but the acoustic performance deteriorates
Solution Approach 1:
The patent merges the high-pitch and low-pitch sound generating units into a single integrated module that shares common structural elements including the frame, cavity, and magnetic field generation system. This consolidation reduces the overall volume while maintaining the acoustic performance of both units through optimized spatial arrangement and shared resources.
Solution Approach 2:
The high-pitch sound generating unit is nested within the same cavity as the low-pitch unit, with both units sharing the frame structure. The magnetic field generation components are arranged to serve both units simultaneously, creating a compact nested configuration that maximizes space utilization while preserving acoustic quality.
2Volume of moving object
If the volume of electronic components is compressed to make the device thinner and smaller, then the size of the sound generating device module is reduced, but the sound quality deteriorates
Solution Approach 1:
The patent combines both sound generating units in a single module with shared structural support and magnetic field generation, reducing overall device volume while maintaining sound quality through optimized acoustic chamber design and proper separation of the two units within the shared cavity.
Solution Approach 2:
The patent applies different structural optimizations to different regions of the module: the high-pitch unit receives a dedicated baffle plate configuration for side sound output, while the low-pitch unit has front sound output structure, allowing each unit to maintain optimal acoustic performance despite the compact shared housing.
3Volume of moving object
If high-pitch and low-pitch sound generating units share a frame and cavity, then the volume is reduced, but the structural complexity increases
Solution Approach 1:
The patent merges the structural support functions into a single shared frame that accommodates both sound generating units, and combines the magnetic field generation system to serve both units, thereby reducing the number of separate components while maintaining functional independence of each unit.
Solution Approach 2:
The shared frame and magnetic field generation system perform multiple functions: providing structural support for both units, generating magnetic fields for both voice coils, and defining the acoustic cavity for both units, thereby reducing overall structural complexity through multi-functional design.
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 achieves improved acoustic performance by maximizing magnetic field strength and diaphragm stability, allowing the module to be applicable to thinner electronic devices without compromising sound quality.
Implementation Method 1
a magnetic field is provided between the magnet and the wall of the accommodation groove, the voice coil is located in the magnetic gap
Data Source
AI summary
Disclosed in the present application is a sound generating device module, comprising: a housing having a cavity therein; a frame fixedly provided in the cavity, a high-pitch sound generating unit and a low-pitch sound generating unit are respectively provided on two opposite sides of the frame, the high-pitch sound generating unit and the low-pitch sound generating unit share the cavity; a baffle plate is provided on a side of the housing corresponding to the high-pitch sound generating unit, and the baffle plate and the housing together form a side sound output port corresponding to the high-pitch sound generating unit; and the sound generating device module is configured to form a front sound output structure for the low-pitch sound generating unit.