Dynamic Sound Capture Region for Moving Subject Tracking
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Solution Overview
Problem
Electronic devices struggle to isolate and intensively capture sound from a specific subject while recording a moving image, as they often receive unwanted surrounding noise and noise from other directions.
Innovation Solution
An electronic device with a camera, microphone, and control unit that recognizes a subject within a moving image, captures movement information, and adjusts the major sound capture region to intensively receive sound from the subject by controlling directional microphones, thereby filtering out noise and focusing on the subject's sound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the electronic device receives sound from the entire photographing range, then the sound capture coverage is comprehensive, but surrounding noise and unwanted sound are also received
Solution Approach 1:
The patent applies local quality by creating a directional sound capture region with enhanced sensitivity in specific directions while maintaining reduced sensitivity in other directions. The major sound capture region is localized toward the photographed subject, allowing comprehensive coverage of the photographing range while selectively emphasizing sound from the subject's direction and suppressing surrounding noise
Solution Approach 2:
The sound capture region is segmented into a major sound capture region (with higher sensitivity) and other regions (with lower sensitivity). This segmentation allows the device to focus audio attention on the subject while still capturing ambient sound context, resolving the contradiction between comprehensive coverage and noise reduction
2Measurement precision
If a fixed directional microphone is used to intensively receive sound from a specific direction, then sound from that direction is captured well, but the device cannot track moving subjects
Solution Approach 1:
The patent implements dynamics by making the major sound capture region movable rather than fixed. The region dynamically adjusts its direction and position based on the photographed subject's location, allowing the device to maintain intensive sound capture precision while adapting to moving subjects. The sound capture region moves in coordination with the camera's focus on the subject
3Ease of operation
If the user manually sets the sound capture direction, then the device can receive sound from the desired direction, but the operation becomes complex and requires user intervention
Solution Approach 1:
The device performs self-service by automatically determining and adjusting the major sound capture region based on the photographed subject's position. The system uses the camera's subject detection and tracking capabilities to autonomously configure the optimal sound capture direction without requiring manual user input, simplifying operation while maintaining sophisticated functionality
Data Source
AI summary
A method for receiving a sound generated from a moving subject and an electronic device implementing the same are provided. The method includes confirming a position of a subject so as to intensively receive a sound generated from the subject, photographing a moving image, selecting at least one subject among subjects included in the photographed moving image, obtaining movement information of the selected subject, and adjusting a major sound capture region based on the obtained movement information of the subject.