Mobile Device Headset Public Announcement Reception
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Solution Overview
Problem
In noisy environments, such as train stations and airports, public announcements often go unheard due to ambient noise or users being engaged with audio from headset accessories, leading to missed important information, including safety messages.
Innovation Solution
A mobile device detects the use of a headset accessory and connects to a WLAN access point or low energy wireless protocol device to receive public announcements, interrupting or overlaying existing audio streams to ensure the user hears critical information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users listen to entertainment audio through headset accessories in noisy environments, then they can enjoy personal audio content, but they become unaware of public announcements and surrounding safety information
Solution Approach 1:
The patent uses the mobile device as an intermediary to capture public announcements through its microphone, process them, and deliver them to the user through the headset. This mediator approach allows the user to maintain personal audio through the headset while simultaneously receiving public announcements via the mobile device's audio output to the same headset, solving the information loss problem without compromising personal audio enjoyment
Solution Approach 2:
The system dynamically adjusts audio streams based on detected conditions. When a public announcement is detected, the system interrupts or overlays the entertainment audio stream with the public announcement stream, creating a dynamic audio experience that prioritizes important information while maintaining personal audio functionality during normal conditions
2Reliability
If public announcements are broadcast in noisy environments through traditional speakers, then they can reach the general audience, but they become garbled or inaudible due to ambient noise and audio equipment issues
Solution Approach 1:
The patent replaces the traditional mechanical acoustic broadcast system (speakers broadcasting through air) with an electronic/digital system. The mobile device captures the announcement, processes it digitally, and delivers it through the headset's direct acoustic coupling to the user's ear, eliminating the vulnerability to ambient noise interference that plagues traditional speaker-based systems
Solution Approach 2:
The system extracts the public announcement signal from the noisy environment using the mobile device's microphone, separates it from ambient noise through processing, and delivers the cleaned signal to the user. This extraction approach removes the harmful effect of ambient noise by isolating and delivering only the relevant announcement content
3Reliability
If the mobile device interrupts audio streams to play public announcements, then users can hear critical information, but the user experience of continuous entertainment audio is degraded
Solution Approach 1:
The system employs dynamic audio stream management where the entertainment audio stream can be interrupted or overlaid with public announcement streams based on detected conditions. This dynamic approach allows the system to prioritize critical information delivery while maintaining the ability to restore continuous entertainment audio playback after the announcement concludes, balancing reliability with user experience
Data Source
AI summary
A mobile device detects use of a headset accessory and, in response, scans for wireless local area network (WLAN) access points that provide a public announcement service. The mobile device will connect with a WLAN access point and proceed to receive public announcement audio which is sent over the headset accessory. Any other audio being played over the headset will either be paused, or reduced in volume while the public announcement audio is played. Alternatively, if no WLAN access point is available, the mobile device can locate a low energy wireless protocol device, and receive public announcements via text message. The WLAN access point and low energy wireless protocol connections are disconnected if the headset accessory is disconnected or no longer in use.