Visual-Indicia Handheld Controller for 3D Audio Drift Correction
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Solution Overview
Problem
Existing 3D audio design tools face challenges in navigating and controlling sound environments due to the limitations of two-dimensional interfaces, leading to slow and difficult manipulation of sound sources and listener orientations.
Innovation Solution
A motion-sensing controller with a handheld body that allows users to visually ascertain its orientation, using orientation-sensing components like cameras or magnetic fields to determine its position relative to a reference, generating an output signal for intuitive control of audio parameters in 3D audio environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional 2D interfaces (keyboard and mouse) are used to control 3D audio parameters, then the control functionality is provided, but the ease of operation deteriorates due to slow and difficult navigation of the sound environment
Solution Approach 1:
The patent transitions from 2D interface control to 3D spatial control by using a handheld controller whose physical orientation in 3D space directly maps to audio parameter adjustments. The controller body can be rotated and positioned in three dimensions, allowing intuitive control of sound source orientation and listener position without navigating through complex 2D menus or interfaces.
2Measurement precision
If relative motion sensing (e.g., IMU integration) is used to track controller orientation, then the motion detection capability is provided, but measurement precision deteriorates due to positional drift from accumulating errors
Solution Approach 1:
The patent introduces visual indicia on the controller body as an intermediary reference system. Instead of relying solely on internal sensors that accumulate error, the indicia serve as external visual markers that can be referenced against a fixed environmental coordinate system (such as markers on walls or ceiling). This intermediary reference allows the system to periodically correct its orientation estimation, eliminating drift while maintaining continuous motion tracking capability.
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
Enables quick and intuitive control of sound source and listener orientations in 3D audio environments, eliminating positional drift and enhancing the ease of 3D audio design.
Implementation Method 1
by visual inspection of the controller body, a user can ascertain the orientation of the controller body
Implementation Method 2
orientation-sensing components like cameras or magnetic fields to determine its position relative to a reference
Data Source
AI summary
A motion-sensing controller comprising a handheld controller body. The controller body comprises indicia visible to a user in use and by inspection of which the user can ascertain the orientation of the controller body; an orientation-sensing component configured to sense the orientation of the controller body relative to a predetermined reference orientation; and an output component configured to generate an output signal based on the sensed orientation of the controller body.