Button Sound-Emitting Apparatus High-Frequency Response
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Solution Overview
Problem
Side sound-emitting speaker modules in electronic devices with full screen and non-porous front surface designs suffer from insufficient high-frequency response due to resonance frequencies below 10 kHz, leading to inadequate sound pressure frequency response.
Innovation Solution
A button sound-emitting apparatus comprising a cap part, an exciter, and an elastic component, where the exciter is suspended in the housing and provides a driving force to vibrate the cap part, radiating sound directly without forming an acoustic resonator, thereby enhancing high-frequency sound emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a side sound-emitting speaker module with acoustic resonator is used, then the sound-emitting effect is improved, but the resonance frequency is below 10 kHz causing insufficient high-frequency response
Solution Approach 1:
The patent extracts the exciter from the traditional enclosed speaker module structure and suspends it directly in the housing, eliminating the front acoustic cavity and sound-emitting hole. This extraction allows the exciter to vibrate the cap part directly against the housing, removing the acoustic resonator that limited high-frequency response while maintaining effective sound emission.
Solution Approach 2:
Instead of using a traditional speaker module where sound is emitted through a controlled acoustic cavity and hole, the patent inverts the approach by having the exciter vibrate the cap part directly against the housing surface. This inversion eliminates the acoustic resonator's frequency limitations and enables direct high-frequency sound radiation.
2Reliability
If a front acoustic cavity and sound-emitting hole are used, then the acoustic resonator forms properly, but the high-frequency sound emission is insufficient
Solution Approach 1:
The patent removes the front acoustic cavity and sound-emitting hole from the system entirely. The exciter vibrates the cap part directly against the housing, eliminating the need for an acoustic resonator structure. This extraction of unnecessary components directly enables high-frequency sound emission while maintaining effective sound output.
3Power
If a side sound-emitting speaker module is used, then the sound pressure frequency response is adequate at low frequencies, but the high-frequency response drops rapidly
Solution Approach 1:
The patent inverts the traditional speaker module architecture by suspending the exciter directly in the housing and vibrating the cap part against the housing surface. This inverted structure eliminates the acoustic resonator that caused rapid high-frequency response drop, enabling the system to maintain adequate sound pressure across a wider frequency range including high frequencies.
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 solution ensures a good sound-emitting effect, particularly in high-frequency ranges, without the need for a front acoustic cavity or sound-emitting hole, maintaining a sleek design and improving sound fidelity.
Implementation Method 1
The exciter vibrates and drives the cap part to vibrate, so as to directly radiate sound outwards
Implementation Method 2
The elastic component is configured to provide an elastic restoring force
Data Source
AI summary
Disclosed are a button sound-emitting apparatus and an electronic device. The button sound-emitting apparatus comprises a cap part, a exciter, and an elastic component; said elastic component is arranged at an edge of the cap part; said exciter is provided in the middle of the cap part; the elastic component is connected to a housing of the electronic device; the exciter is suspended in the housing; the elastic component is configured for providing an elastic restoring force; the exciter is configured to be used for providing a driving force. The button sound-emitting apparatus is simple in structure and eliminates the need to arrange a front acoustic cavity and a sound outlet hole, and ensures good sound performance.