Wireless Audio Volume Control Using Ambient Sound Feedback
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Solution Overview
Problem
In audio systems with wireless connectivity, changing the installation location of the audio device leads to varying environmental sounds, necessitating frequent manual volume adjustments and risking audio leakage outdoors.
Innovation Solution
An audio system with a mobile terminal device that adjusts volume and sound quality automatically based on environmental sound levels and outdoor leak detection, using a mobile terminal device to control an audio device via wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the installation place of the audio device is changed freely, then the adaptability of the audio device is improved, but the volume adjustment burden increases due to varying environmental sounds
Solution Approach 1:
The audio device automatically detects environmental sound levels and adjusts its own output volume without user intervention. The device monitors surrounding noise conditions and autonomously optimizes playback volume, eliminating the need for manual adjustment when moving between locations.
Solution Approach 2:
The audio device incorporates sound level detection capability that continuously monitors environmental acoustic conditions. Based on the detected ambient sound levels, the device receives feedback and automatically adjusts its output volume to maintain optimal listening conditions across different installation locations.
2Manufacturing precision
If the volume of the audio signal is increased to listen clearly, then the audio signal quality is improved, but audio leakage outdoors increases causing noise disturbance
Solution Approach 1:
The audio device detects outdoor ambient sound levels and uses this feedback to automatically control the maximum output volume. When outdoor noise levels are low, the device limits its output to prevent audio leakage and disturbance to neighbors, while still maintaining clear indoor listening through optimized sound distribution.
Solution Approach 2:
The audio device dynamically adjusts its output parameters including volume level and potentially frequency distribution based on detected environmental conditions. By changing these parameters according to ambient sound levels, the device maintains audio quality indoors while preventing harmful audio leakage outdoors.
Data Source
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AI summary
Provided is an audio system in which an audio signal to be heard can be automatically set to an appropriate volume or sound quality. The audio system is provided with: a mobile terminal device provided with a microphone unit that collects surrounding sound waves, and a transmission unit that, on the basis of the sound waves collected by the microphone unit, sets the volume or sound quality of an audio signal to be amplified by an audio device, and transmits the set audio signal volume or sound quality information to the audio device; and an audio device provided with an amplification unit that amplifies the audio signal, a control unit that adjusts the audio signal volume or sound quality by means of the amplifier, and a receiving unit that receives the audio signal volume or sound quality setting information from the mobile terminal device. The control unit controls the amplification unit so as to adjust the audio signal volume or sound quality on the basis of the audio signal volume or sound quality setting information received by the receiving unit.