Audio Adjusting Device for Head-Mounted Playback Spatial Localization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users face challenges in accurately determining sound sources beyond their field of view while engaging in first-person games or watching videos, as current head-mounted playback systems fail to provide an immersive experience by not allowing them to easily hear audio data from all directions without changing their head position.
Innovation Solution
An audio adjusting device and method that utilize a positioning module to detect head movement, calculate displacement, and adjust volume levels of directional audio signals, converting them into a two- or multi-channel audio signal compatible with head-mounted playback devices, allowing users to intuitively focus on audio from different directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a head-mounted playback system is used, then the device portability and user comfort are improved, but the ability to achieve spatial audio localization and directional sound perception is worsened
Solution Approach 1:
The patent replaces the mechanical/multi-channel speaker system with an electronic signal processing system. By using digital signal processing to simulate spatial audio effects in head-mounted devices, the system achieves directional sound perception without requiring physical multi-channel speaker arrangements, thus maintaining portability while improving spatial audio localization capability.
Solution Approach 2:
The patent changes the audio signal parameters dynamically based on head movement. By detecting head position and orientation changes and adjusting audio signal parameters accordingly, the system creates the perception of directional sound sources while using simple head-mounted playback devices, resolving the contradiction between device simplicity and spatial audio accuracy.
2Measurement precision
If the user moves or turns the head to locate sound sources, then the audio directionality is improved, but the user experience complexity and operation difficulty increase
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously detects head movement and automatically adjusts audio signal parameters in response. This closed-loop feedback allows the system to maintain accurate sound source localization without requiring the user to consciously control head movements, making the operation intuitive and simple while preserving precise audio directional perception.
Solution Approach 2:
The system performs automatic audio parameter adjustment based on detected head movements without requiring user intervention. The audio processing system serves itself by autonomously adapting to user head position changes, thereby maintaining accurate sound localization while keeping the user experience simple and natural.
3Measurement precision
If multi-channel speakers are used, then the spatial audio effect is improved, but the device complexity and cost increase
Solution Approach 1:
The patent substitutes the complex multi-channel speaker hardware system with a simplified head-mounted playback device combined with digital signal processing. By using electronic processing to simulate multi-channel spatial audio effects, the system achieves comparable spatial audio quality without the physical complexity and cost of multiple speakers.
Solution Approach 2:
The patent uses dynamic parameter changes in audio signal processing to create spatial audio effects that would otherwise require multiple physical channels. By manipulating audio parameters such as phase, amplitude, and timing based on head movement detection, the system generates convincing spatial audio perception using a single or limited number of playback channels, thereby reducing device complexity.
Data Source
AI summary
An audio adjusting method and an audio adjusting device are provided. The audio adjusting method includes the steps of: receiving a plurality of directional audio signals; calculating a displacement amount through a positioning module; calculating a plurality of gain values corresponding to the displacement amount through a processing module; adjusting volume levels of the plurality of directional audio signals according to the plurality of gain values; converting the plurality of directional audio signals into a two- or multi-channel audio signal according to the quantity of two or more channels of a head-mounted playback device; and playing the two-channel or multi-channel audio signal through the head-mounted playback device.