Four-Axis Joystick for Single-Handed 3D Audio Position Control
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Solution Overview
Problem
Current audio mixing consoles for immersive audio formats require multiple hands to control four parameters (X, Y, Z, and size), leading to ergonomic challenges and reduced accuracy due to the complexity of controlling three-dimensional sound sources.
Innovation Solution
A four-axis joystick that allows single-handed control over four parameters, with each axis encoded by a specific motion (radial pivoting, orthogonal pivoting, rotation, and extension/contraction) to facilitate precise control of audio source positioning in three-dimensional space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional multi-hand control is used for immersive audio formats, then control coverage includes all four parameters (X, Y, Z, size), but operator fatigue increases and accuracy decreases
Solution Approach 1:
The patent combines multiple control functions (X, Y, Z, and size parameters) into a single joystick device that can be operated with one hand. The joystick integrates radial pivoting for X-Y plane control, axial extension-contraction for Z-height control, and rotational control for size adjustment, allowing all four parameters to be controlled simultaneously by one operator hand.
Solution Approach 2:
The joystick serves multiple functions within a single device: it controls horizontal position (X), depth position (Y), vertical height (Z), and sound source size. This multi-functional design eliminates the need for separate controls for each parameter, reducing operator fatigue while maintaining comprehensive control capability.
2Measurement precision
If four separate controls are used for X, Y, Z, and size parameters, then each parameter can be controlled precisely, but the number of hands required increases to three
Solution Approach 1:
The patent merges four separate control functions into a single joystick operated by one hand. Radial pivoting controls X and Y coordinates, axial extension-contraction controls Z height, and rotation controls size, achieving precise control of all four parameters simultaneously with a single hand.
Solution Approach 2:
The patent adds a vertical dimension (Z-axis) to the traditional two-dimensional joystick by implementing extension and contraction along the longitudinal axis. This transforms the control interface from planar to three-dimensional, enabling Z-height control while maintaining X-Y plane control through radial pivoting, all within a single hand-operated device.
3Ease of operation
If two-dimensional joystick control is used, then X and Y parameters are controlled easily, but Z height and size parameters cannot be controlled
Solution Approach 1:
The patent extends the traditional two-dimensional joystick into three dimensions by adding axial extension and contraction capability along the longitudinal axis for Z-height control. The joystick maintains its ease of use for X-Y plane control through radial pivoting while adding Z-axis control through extension-contraction and size control through rotation.
Solution Approach 2:
The enhanced joystick serves as a universal control device for all four audio spatial parameters (X, Y, Z, and size). It maintains the intuitive X-Y control of traditional joysticks while adding Z-height control through extension-contraction and size control through rotation, making it adaptable to immersive audio formats.
Data Source
AI summary
A four-axis joystick provides the ability to control four parameters in a single input device. In one embodiment, the Z-direction of control is implemented by a telescoping joystick handle, with the X- and Y-directions of control being implemented by pivoting motions of the handle in directions radial to an axis of the joystick handle, and the theta-direction of control implemented by rotation of a portion of the handle about the handle axis. The four-axis joystick may be used as an input device for audio mixing applications with the X-, Y-, and Z-dimensions of control mapped to panning of an audio source in the left-right, forward-backward, and up-down directions respectively, and the theta-dimension mapped to volume control of low frequency effects.