Dynamic Fan Noise Control via Ambient Sound Analysis
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Solution Overview
Problem
Electronic devices face challenges in dynamically controlling noise from sound-generating components like fans, which can be distracting, especially when other ambient or device-generated sounds are present, leading to inefficient operation due to fixed noise limits.
Innovation Solution
Implementing a dynamic noise control system that adjusts the operational limits of sound-generating components based on ambient noise, device noise, and current device activities, using a sound analyzer and component noise limiting module to optimize fan speeds or settings in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fan speed is increased to improve cooling efficiency, then cooling performance is improved, but noise level increases and becomes distracting to users
Solution Approach 1:
The patent implements dynamic noise control by continuously monitoring ambient noise levels and device operational state, then adjusting fan speed limits in real-time. The system transitions from static fan control to dynamic adjustment based on environmental conditions, allowing higher fan speeds when ambient noise is high and lower speeds when ambient noise is low, thereby resolving the contradiction between cooling efficiency and noise generation.
Solution Approach 2:
The system changes the operational parameters of the fan by adjusting speed limits based on monitored conditions. When ambient noise exceeds thresholds or when device operational state indicates high cooling demand, the system modifies the fan speed parameter dynamically, allowing the fan to operate at higher speeds when noise is less distracting and at lower speeds when noise would be more noticeable, thus balancing cooling efficiency with user comfort.
2Object-generated harmful factors
If fan speed is limited to reduce noise, then noise level is reduced, but cooling efficiency decreases
Solution Approach 1:
The patent employs feedback mechanisms by continuously monitoring ambient noise levels, device temperature, and operational state, then using this information to adjust fan speed limits. The system receives feedback from noise sensors and thermal sensors, processes this information, and dynamically adjusts fan operation accordingly, ensuring optimal cooling efficiency while maintaining acceptable noise levels based on real-time conditions.
Solution Approach 2:
The system dynamically adjusts fan speed limits based on real-time monitoring of ambient noise and device state, transitioning from static speed limits to adaptive control. This dynamic approach allows the system to optimize cooling efficiency by increasing fan speeds when conditions permit (high ambient noise, high thermal load) while maintaining lower speeds when noise would be more distracting, thus resolving the trade-off between noise reduction and cooling performance.
3Device complexity
If fixed noise limits are applied, then noise control is simplified, but the system cannot adapt to varying ambient conditions and device operational modes
Solution Approach 1:
The patent transforms the noise control system from a static, fixed-limit approach to a dynamic, adaptive system that continuously monitors ambient noise levels and device operational state. The system adjusts fan speed limits in real-time based on environmental conditions and usage patterns, enabling adaptation to varying contexts such as different ambient noise environments, device thermal states, and operational modes, thereby significantly improving versatility while accepting increased system complexity.
Data Source
AI summary
Aspects of the subject technology provide for dynamic noise control for electronic devices. For example, a dynamically adjustable limit on component noise may be generated based on ambient noise, based on other device-generated sound, based on a state of an audio output device, and/or based on an application being actively utilized at an electronic device. As one example, an electronic device may increase a limit on a sound-generating component of an electronic device when the electronic device determines that a user of the electronic device is engaged in a sound-tolerant activity. As another example, an electronic device may decrease a limit on a sound-generating component of an electronic device when the electronic device determines that a user of the electronic device is engaged in a sound-sensitive activity.