Microphone Array Directivity Control for Spherical Audio
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Solution Overview
Problem
Current techniques for capturing and reproducing spherical moving images with stereophonic sound do not effectively allow users to enhance the directivity of microphone sensitivity characteristics, limiting the realism and personalized audio experience.
Innovation Solution
An apparatus and method that obtain sound data from multiple microphones, display a polar pattern reflecting sensitivity directivity, allow user adjustments to this pattern, and generate sound data with enhanced directivity in specific directions, enabling personalized stereophonic sound output based on user instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple microphones are used to capture sound signals, then the stereophonic sound reproduction is improved, but the ability to enhance directivity of sensitivity characteristics in specific directions is limited
Solution Approach 1:
The system dynamically adjusts the directivity of microphone sensitivity characteristics based on user input. The control unit modifies the polar pattern shapes in real-time, allowing the microphone array to adapt its sound capture pattern from omnidirectional to directional configurations, thereby resolving the contradiction between maintaining reliable stereophonic reproduction and enabling directivity enhancement.
Solution Approach 2:
The invention changes the sensitivity parameters of the microphone array by allowing users to modify polar pattern shapes. By adjusting parameters such as the directional focus and sensitivity distribution across different frequencies, the system enhances directivity in specific directions while preserving overall stereophonic sound quality.
2Adaptability or versatility
If directivity of microphone sensitivity is enhanced in a specific direction, then the audio experience is personalized, but the complexity of the system increases
Solution Approach 1:
The system incorporates user feedback through the input unit, where users can specify their preferred listening directions. The control unit processes this feedback and adjusts the microphone sensitivity characteristics accordingly, creating a closed-loop system that personalizes the audio experience without requiring complex manual configuration.
Solution Approach 2:
The system automatically adjusts its sensitivity characteristics based on user input, eliminating the need for complex manual setup or professional calibration. The control unit self-adjusts the polar patterns to match user preferences, simplifying the user interface while achieving personalized audio experiences.
Data Source
AI summary
An apparatus, method, and system each of which obtains sound data based on a plurality of sound signals respectively output from a plurality of microphones, receives a user instruction for enhancing directivity of sensitivity characteristics of at least one of the plurality of microphones in a specific direction, and generates sound data having the directivity in the specific direction, based on the obtained sound data.