Speaker Resonance Space Structure for Low-Frequency Audio
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Solution Overview
Problem
Electronic devices require a large resonance space for low-pitched audio signals to maintain audio performance, which poses a challenge in designing compact devices.
Innovation Solution
The electronic device incorporates a housing design with a first and second plate, a frame, a spacer, and a metal plate to create a resonance space for audio signals, utilizing a planar and horizontal portion with a stepped configuration to enhance audio transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large resonance space is provided for low-pitched audio signals, then audio performance is improved, but device size increases
Solution Approach 1:
The spacer is disposed inside the housing cavity, nesting the resonance space generation function within the existing device structure. The spacer creates a resonance chamber between its planar portion contact with the speaker and its horizontal portion contact with the rear plate, effectively nesting a functional resonance space within the compact housing without adding external volume.
Solution Approach 2:
The stepped configuration of the spacer (planar portion and horizontal portion) utilizes three-dimensional spatial arrangement to maximize the resonance space volume within the constrained housing depth. By creating vertical and horizontal portions at different levels, the design effectively uses multiple dimensions to expand the acoustic resonance volume without increasing the overall device footprint.
2Reliability
If a resonance space is created using a spacer, then audio performance is improved, but structural complexity increases
Solution Approach 1:
The spacer serves multiple functions simultaneously: it provides mechanical support for the speaker, creates the resonance space, and forms the structural boundary between the speaker assembly and the rear plate. This multi-functionality reduces the need for separate components, thereby managing structural complexity while achieving audio performance improvement.
Solution Approach 2:
The spacer merges the support function and resonance chamber formation function into a single component. Rather than using separate support structures and resonance chambers, the spacer integrates both functions, simplifying the overall structure while maintaining the desired acoustic performance.
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 effectively optimizes audio performance by providing a resonance space for low-pitched audio signals, enhancing sound quality in compact devices.
Implementation Method 1
a resonance space for a low-pitched audio signal having a relatively low frequency
Data Source
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AI summary
According to an embodiment, an electronic device includes a housing including a front plate, a rear plate, and a frame disposed between the first plate and the second plate, a speaker disposed on the frame and configured to provide an audio output from the diaphragm to outside of the electronic device through the acoustic duct connected to the speaker and a spacer disposed between the surface of the speaker and the rear plate, the spacer including a planar portion to contact on the surface of the speaker and stepped portions connected to the planar portion. An inner space of the spacer is utilized as a resonance space.