Adaptive Sound Propagation Control for Adjacent Workspaces
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Solution Overview
Problem
Existing soundproofing technologies fail to appropriately switch between soundproof and non-soundproof states based on the specific usage situations of adjacent spaces, leading to unwanted sound leakage or propagation between workspaces and non-workspaces.
Innovation Solution
A sound adjustment method that estimates user situations in adjacent spaces, determines the usage of a space for work by multiple workers, and adjusts sound propagation by applying noise cancellation to reduce sound leakage based on these determinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If noise cancellation is applied to reduce sound leakage between adjacent spaces, then sound privacy is improved, but communication between spaces becomes difficult
Solution Approach 1:
The system dynamically adjusts the degree of noise cancellation based on real-time detection of communication needs. When voice communication is detected between adjacent spaces, the noise cancellation is reduced or suspended to allow clear communication. When no communication is detected, full noise cancellation is applied to prevent sound leakage. This dynamic adjustment resolves the contradiction by adapting the sound control level to current operational requirements.
Solution Approach 2:
The system uses microphones to detect voice communication between adjacent spaces and provides feedback to the noise cancellation control. Based on this feedback, the system automatically adjusts the noise cancellation level. When voice communication is detected, the feedback signal reduces noise cancellation to allow communication. When no voice is detected, the feedback maintains strong noise cancellation to prevent sound leakage, thus resolving the contradiction through continuous monitoring and adjustment.
2Adaptability or versatility
If the soundproof structure is set to a fixed state, then the structure is simple, but it cannot adapt to different usage situations
Solution Approach 1:
The soundproof structure transitions from a fixed state to a dynamic, adjustable state. The system uses sensors to detect usage situations (such as number of people, type of activity, and communication needs) and automatically adjusts the soundproofing level accordingly. This allows the structure to adapt to different scenarios - providing strong sound isolation for private work and reduced isolation for collaborative activities - while maintaining relatively simple hardware through intelligent control.
Solution Approach 2:
The system changes the parameters of the soundproof structure dynamically based on detected usage situations. By adjusting parameters such as the degree of sound isolation, the timing of door closure, and the level of noise cancellation, the system adapts to different work scenarios without requiring complex physical reconfiguration. This parameter-based adaptation resolves the contradiction between versatility and structural simplicity.
3Object-affected harmful factors
If the door is closed to prevent sound leakage, then sound privacy is improved, but access to the space becomes difficult
Solution Approach 1:
The system performs preliminary detection of usage situations and communication needs before fully closing the door. When voice communication is detected or collaboration is anticipated, the system maintains the door in a partially open or easily accessible state, allowing communication and access without full closure. When no communication is detected and privacy is required, the door closes fully to prevent sound leakage. This preliminary assessment resolves the contradiction by preparing the appropriate access level in advance.
Solution Approach 2:
The door transitions from a static closed or open state to a dynamic state that can adjust its opening degree and locking mechanism based on real-time conditions. The system detects when communication is needed and automatically adjusts the door to allow access while maintaining sound privacy when possible. This dynamic door control resolves the contradiction between sound privacy and ease of access by adapting the door state to current needs.
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
Effectively switches sound propagation to suit the usage situation, reducing unwanted sound leakage between adjacent spaces, enhancing privacy and work environment quality.
Implementation Method 1
noise cancellation that reduces a listening level at which a sound generated in one of the first space or the second space is heard in another one of the first space or the second space
Data Source
AI summary
A sound adjustment method includes: estimating a user situation of a user who is using, out of a first space and a second space that are adjacent to each other, the first space; determining a usage situation by determining, based on the user situation of the user who is using the first space estimated, whether the first space is being used for work by a plurality of workers including the user who is using the first space; and adjusting sound propagation by switching, based on a determination result made in the determining of the usage situation, between whether or not to apply noise cancellation that reduces a listening level at which a sound generated in one of the first space or the second space is heard in another one of the first space or the second space.