Open Audio Volume Control for Ambient Noise Adaptation
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Solution Overview
Problem
Existing audio devices, such as earbuds and over-the-ear headphones, obstruct the user's ear canal, inhibiting the ability to hear ambient sounds and sending social cues of unavailability, necessitating manual volume adjustments based on changing noise levels.
Innovation Solution
Wearable open audio devices automatically adjust sound pressure levels based on ambient noise, using microphones to detect noise and processors to enhance or reduce audio output, ensuring the audio signal is louder than ambient noise by a threshold, with differential frequency adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If earbuds or over-the-ear headphones are used to deliver sound, then audio output quality is improved, but the user's ability to hear ambient sounds deteriorates and social interaction is hindered
Solution Approach 1:
The audio device dynamically adjusts the sound pressure level of audio output based on detected ambient noise levels. The system continuously monitors ambient noise and automatically modifies audio signal characteristics to maintain optimal listening experience while adapting to changing environmental conditions, thereby resolving the contradiction between audio quality and ambient awareness.
Solution Approach 2:
The system changes physical parameters of the audio output by adjusting sound pressure levels based on ambient noise measurements. When ambient noise increases, the device increases audio output volume, and vice versa, allowing the audio delivery system to adapt its parameters dynamically to maintain both audio quality and environmental awareness.
2Illumination intensity
If the sound pressure level of audio output is increased to overcome ambient noise, then audio signal clarity is improved, but energy consumption increases
Solution Approach 1:
The audio device employs a feedback mechanism where a microphone continuously monitors ambient noise levels and feeds this information back to the audio processing system. Based on this feedback, the system automatically adjusts the sound pressure level of the audio output, increasing volume only when necessary to overcome ambient noise, thereby maintaining audio signal clarity while minimizing unnecessary energy consumption.
Solution Approach 2:
The system dynamically adjusts audio output power based on real-time ambient noise conditions rather than maintaining a fixed high volume. This dynamic adaptation allows the device to consume energy efficiently by increasing audio power only when ambient noise requires it, resolving the contradiction between signal clarity and energy usage.
3Ease of operation
If manual volume adjustment is required to adapt to changing noise levels, then user control over audio output is improved, but ease of operation deteriorates
Solution Approach 1:
The audio device performs self-adjustment of volume levels by automatically detecting ambient noise and modifying its own audio output accordingly. The system serves itself by eliminating the need for manual user intervention, continuously monitoring the environment and adjusting audio parameters autonomously, thereby resolving the contradiction between user control and operational convenience.
Solution Approach 2:
Through continuous feedback from ambient noise detection, the system automatically adjusts volume without requiring user input. This feedback-driven automation maintains user control over the overall listening experience while eliminating the time loss associated with manual adjustments, as the device adapts proactively to changing conditions.
4Adaptability or versatility
If open audio devices are used to allow ambient sound perception, then social interaction is improved, but audio output leakage increases
Solution Approach 1:
The system dynamically changes the sound pressure level parameter of the audio output based on ambient noise conditions. By adjusting the volume upward when ambient noise is high, the audio signal becomes more directional and contained relative to the background noise, reducing perceived leakage while maintaining the open design that allows ambient sound perception.
Solution Approach 2:
The system converts the potential harm of audio leakage into a benefit by using ambient noise as a reference to adjust audio output levels. When ambient noise is high, the increased audio volume naturally masks leakage concerns, and the open design's ability to perceive ambient sound becomes an advantage for situational awareness rather than a drawback.
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
Provides a seamless listening experience by minimizing leakage and adapting to changing noise levels without manual intervention, enhancing user interaction awareness and reducing resource-intensive processing.
Implementation Method 1
detecting ambient noise
Implementation Method 2
outputting an audio signal
Data Source
AI summary
Methods and apparatus are provided for automatically adjusting, by an audio device, the SPL of its audio output. As described herein, the SPL is adjusted based on detected ambient noise. According to aspects, audio device iteratively adjusts the SPL based on the ambient noise. According to aspects, the SPL is adjusted to be greater than the ambient noise by a threshold SPL amount. According to aspects, the audio device outputs sound in substantially a first direction and the microphone detects sound substantially outside of the first direction. The adjusted sounds are output by the audio device.