Acoustic Control Apparatus for Dynamic User Position Tracking
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Solution Overview
Problem
Existing acoustic control technologies fail to dynamically adjust sound outputs based on the changing position of the user in a speaker layout, requiring pre-defined settings and known speaker and camera positions, which limits their adaptability and effectiveness.
Innovation Solution
An acoustic control apparatus and method that computes the position of speakers and the user using image processing and sound collection data, allowing dynamic adjustment of sound outputs based on the user's position relative to the speakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If acoustic control is implemented using pre-defined settings and known speaker/camera positions, then the control system can be simplified, but the system cannot dynamically adapt to changing user positions
Solution Approach 1:
The patent replaces the mechanical approach of pre-defined physical settings with an optical-computational system. A camera captures images of the user, and a computer calculates the user's position coordinates and adjusts acoustic outputs dynamically, eliminating the need for manual positioning or pre-configured settings.
Solution Approach 2:
The system transitions from static pre-defined control settings to dynamic real-time control. The computer continuously calculates user position based on camera images and adjusts acoustic outputs accordingly, enabling the system to adapt automatically as the user moves throughout the space.
2Ease of manufacture
If the system requires known positions of speakers and camera as prerequisites, then the control algorithm can be simplified, but the system becomes difficult to apply in general scenarios
Solution Approach 1:
The system performs self-calibration by automatically determining speaker positions through image processing. The computer analyzes images containing both the camera and speakers, calculates their relative positions, and uses this information for acoustic control, eliminating the need for manual position input or complex preliminary setup.
Solution Approach 2:
The camera serves multiple functions: it captures user position information for acoustic control and simultaneously provides data for determining speaker positions. This multi-functionality eliminates the need for separate positioning systems or manual configuration procedures.
3Adaptability or versatility
If the system uses image processing to compute user position dynamically, then adaptability to user movement is improved, but the computational requirements and processing time increase
Solution Approach 1:
The system performs preliminary calculations by establishing the geometric relationships between camera, speakers, and space coordinates in advance. When processing user position, the computer uses these pre-established spatial relationships to quickly calculate positions from successive images, reducing real-time computational burden.
Solution Approach 2:
The system processes successive images in sequence, using feedback from previous position calculations to optimize subsequent processing. The computer continuously updates user position based on new images while maintaining awareness of the user's trajectory and the acoustic environment, enabling efficient real-time adaptation.
Data Source
AI summary
Disclosed herein is an acoustic control apparatus including: a speaker-position computation section configured to find the position of each of a plurality of speakers located in a speaker layout space on the basis of a position computed as the microphone position in the speaker layout space based on a taken image of at least any of the microphone and an object placed at a location close to the microphone position, and a result of sound collection to collect a signal sound each generated by one of the speakers; and an acoustic control section configured to control a sound generated by each of the speakers by computing a user position in the speaker layout space based on a taken image of the user, computing the distance between the user position and the position of each of the speakers, and controlling sounds generated by the speakers according to the computed distances.