Spatial Audio Signal Processing for Device Movement Tracking
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Solution Overview
Problem
Existing spatial audio technologies fail to accurately adjust sound sources when mobile devices change position or orientation, leading to inconsistent perceived sound source locations and poor user experience.
Innovation Solution
An audio signal processing method that utilizes distance and angle measurement units on both mobile and wearable devices to determine relative position information, remapping audio signals based on head-related parameters to maintain consistent sound source positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If spatial audio technology is implemented without tracking device movement, then the system complexity is reduced, but the accuracy of sound source positioning deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from a static audio system to a dynamic one that continuously tracks device position and orientation. The mobile device and wearable device exchange position information in real-time, and the audio signal processing dynamically adjusts sound source positioning based on current device states, resolving the contradiction between maintaining simplicity and achieving accurate positioning.
Solution Approach 2:
The patent implements feedback mechanisms where the mobile device sends position information to the wearable device, which then uses this feedback to adjust audio signal processing. This closed-loop system ensures that sound source positioning remains accurate by continuously incorporating updated position data, resolving the contradiction between system complexity and positioning accuracy.
2Stability of the object's composition
If the audio system does not remap sound sources based on device movement, then the processing complexity is reduced, but the consistency of perceived sound source location deteriorates
Solution Approach 1:
The patent applies dynamics by implementing real-time audio signal remapping that adapts to device movement. The system dynamically recalculates sound source positions based on current device orientation and position data, ensuring that the perceived sound source location remains consistent with the user's actual device orientation, thus resolving the contradiction between processing complexity and location consistency.
Solution Approach 2:
The patent changes audio processing parameters (sound source position, orientation, and spatial characteristics) based on detected device movement. By dynamically adjusting these parameters according to position and orientation data, the system maintains consistent sound source localization while managing processing complexity through targeted parameter modifications rather than complete system reprocessing.
3Measurement precision
If the system tracks only wearable device position, then the measurement complexity is reduced, but the accuracy of relative position determination deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the measurement task between two devices: the mobile device tracks its own position and sends this data to the wearable device, which then combines it with its own position data. This segmentation of measurement functions allows each device to perform simpler individual measurements while achieving accurate relative position determination through collaboration, resolving the contradiction between measurement complexity and position accuracy.
Solution Approach 2:
The patent uses communication data as an intermediary to transfer position information between devices. The mobile device acts as an intermediary by providing its position data to the wearable device, enabling the wearable device to calculate relative position without directly measuring it. This intermediary approach reduces measurement complexity while maintaining high relative position accuracy.
Data Source
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AI summary
The disclosure relates to the technical field of spacial audio, in particular to an audio signal processing method, electronic apparatus, and storage medium. An audio signal processing method, includes, acquiring a first distance between a current position and an initial position of a mobile device (S210), and a second distance between the current position of the mobile device and a wearable device (S220). Determining a first deflection angle according to the first distance, the second distance and the initial distance between the mobile device and the wearable device (S230). Acquiring a second deflection angle of the wearable device reflecting a posture change (S240). Determining relative position information between the mobile device and the wearable device according to the first deflection angle, the second deflection angle and the second distance and processing an audio signal based on the relative position information to obtain a playback audio played by the wearable device (S250).