UWB Audio Level Adjustment via Location Tracking
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Solution Overview
Problem
Existing audio systems require manual adjustments for optimal listening experiences, which can be inefficient and disrupt the enjoyment of audio due to the need for users to manually adjust volume levels based on their location within a multi-speaker environment.
Innovation Solution
Implementing an ultra-wideband (UWB) radio system that uses precise location tracking to automatically adjust audio levels by determining the relative positions of wireless devices to speakers, allowing for dynamic sound level adjustments based on distance ratios or averages, thereby enhancing the audio experience without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual audio adjustments are required, then users can control volume levels, but the listening experience is disrupted and efficiency is reduced
Solution Approach 1:
The system automatically adjusts audio levels based on UWB location data without requiring user intervention. The audio controller monitors device locations relative to speakers and dynamically adjusts volume levels autonomously, eliminating the need for manual control while maintaining optimal listening experience
Solution Approach 2:
The system continuously receives UWB ranging data about device positions and uses this feedback to dynamically adjust audio levels. This closed-loop control ensures audio output automatically adapts to user location, resolving the contradiction between manual control and automated optimization
2Adaptability or versatility
If automated audio adjustment is implemented, then listening experience is enhanced, but system complexity increases
Solution Approach 1:
The UWB radio system serves multiple functions: it provides secure authentication, precise location tracking, and enables automated audio control. By consolidating these functions into a single communication protocol, the system achieves high adaptability without proportionally increasing complexity
Solution Approach 2:
The audio controller acts as an intermediary that receives UWB location data and translates it into audio level adjustments. This mediator layer simplifies the overall system architecture by centralizing the complexity of coordinating location data with audio output across multiple speakers
3Measurement precision
If precise location tracking is used, then audio levels can be accurately adjusted, but energy consumption increases
Solution Approach 1:
The system uses periodic UWB ranging measurements rather than continuous monitoring. Audio levels are adjusted based on these periodic location updates, maintaining measurement precision while significantly reducing energy consumption compared to continuous tracking
Solution Approach 2:
The system dynamically adjusts audio level parameters based on location precision requirements. When high precision is needed (e.g., device approaching a speaker), the system increases measurement frequency and precision; when device is stationary, it reduces updates to conserve energy
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
The UWB system ensures seamless audio adjustments, maintaining optimal sound levels and timing across multiple speakers, improving the listening experience by automatically adapting to the user's location, thus eliminating the need for manual adjustments.
Implementation Method 1
provides for highly precise positioning, within 10 cm of ranging accuracy in as little as three degrees of precision through time-of-flight (ToF) and angle-of-arrival (AoA) measurements
Data Source
AI summary
In aspects of audio level adjustment based on UWB, a wireless device includes an ultra-wideband (UWB) radio to communicate with UWB radios respectively associated with speakers emitting audio. The UWB radio can receive UWB ranging data from the UWB radios associated with the speakers. An audio controller can utilize the UWB ranging data to monitor locations of the wireless device relative to the speakers and determine a location change of the wireless device relative to the speakers. The audio controller can communicate audio adjustment instructions based on the locations of the wireless device relative to the speakers or relative to the location change of the wireless device. The audio adjustment instructions can initiate an adjustment of a sound level of the audio emitted from at least one of the speakers and/or initiate a delay in the audio emitted from at least one of the speakers.