Adaptive Speaker Chamber Volume for Audio and Thermal Balance
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Solution Overview
Problem
Portable information handling systems face challenges in providing high-quality audio output due to the limited space in low-profile housings, which restricts the size and quality of speakers, impacting both audio performance and thermal management.
Innovation Solution
An adaptive audio chamber system using an electroactive polymer that expands and contracts based on audio output requirements, increasing the audio chamber volume for high-quality audio and reducing it for notifications, while also managing thermal conditions by adjusting airflow impedance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the housing thickness is minimized to reduce footprint and weight, then portability is improved, but the audio chamber volume is reduced which degrades speaker quality
Solution Approach 1:
The patent applies the dynamics principle by making the audio chamber volume adjustable rather than fixed. The housing includes a movable panel that can be positioned at different locations to dynamically change the audio chamber volume based on operational requirements. This allows the system to have a small footprint when portability is needed while providing larger audio chamber volume when high-quality audio output is required, thus resolving the contradiction between compact size and audio performance.
2Manufacturing precision
If better quality speakers are used to improve audio output quality, then audio performance is improved, but the speaker size increases which is incompatible with low profile housing
Solution Approach 1:
The patent enables high-quality audio output in a compact speaker by dynamically adjusting the audio chamber volume. When high-quality audio is needed, the movable panel positions to maximize the audio chamber volume behind the compact speaker, providing sufficient acoustic space for better sound quality. When portability is prioritized, the panel adjusts to minimize overall housing thickness. This dynamic adjustment allows a small speaker to deliver high-quality audio when needed without requiring a permanently large housing.
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 solution enables high-quality audio playback while maintaining a low profile and efficient thermal management, enhancing user experience by adapting to different audio types and thermal states.
Implementation Method 1
An adaptive audio chamber system using an electroactive polymer that expands and contracts based on audio output requirements
Implementation Method 2
managing thermal conditions by adjusting airflow impedance
Data Source
AI summary
An information handling system housing forms an audio chamber within which a speaker generates audible noise based upon audible information. An adaptive material, such as an electroactive polymer, is disposed at an opening formed in the audio chamber to selectively expand to increase the audio chamber size and contract to decrease the audio chamber size. An increased audio chamber volume enhances audible noise, such as music or audio associated with audiovisual content. A decrease audio chamber can improve airflow within the housing, such as during times of thermal stress.