Sound Source Localization Device Microphone Arrangement
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Solution Overview
Problem
Existing sound source localization devices face accuracy issues due to microphones being covered by users' hands, leading to decreased performance in specifying sound source positions.
Innovation Solution
A sound source localization device with multiple sound pickup devices that record sound signals and notify users about the arrangement of these devices, allowing them to position their hands to avoid covering the microphones, using sensors and imaging sections to determine the best microphone array for sound source localization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple microphones are arranged on the display section side of the device, then sound source localization capability is improved, but the probability of microphones being covered by user's hand increases
Solution Approach 1:
The patent transitions from a single-sided microphone arrangement to a dual-sided arrangement with microphones positioned on both the display section side and the opposite side of the device. This spatial dimensionality change ensures that even if a user's hand covers microphones on one side, microphones on the opposite side remain accessible and functional, thereby maintaining sound source localization accuracy.
Solution Approach 2:
The patent modifies the spatial distribution parameter of microphone arrangement by positioning microphones at multiple locations on opposite sides of the device. This parameter change creates redundancy in the microphone array configuration, allowing the system to compensate for covered microphones and maintain localization performance.
2Ease of operation
If microphones are positioned on the display section side for easy access, then ease of operation is improved, but measurement precision deteriorates due to hand coverage
Solution Approach 1:
By arranging microphones on both sides of the device, the patent ensures that users can interact with the device in various orientations without necessarily covering all microphones. The opposite side microphones provide an alternative pathway for sound capture, maintaining precision while preserving ease of operation.
Solution Approach 2:
The system incorporates a determination section that detects which microphones are covered and dynamically selects the appropriate microphone array for sound source localization. This feedback mechanism ensures that even if some microphones are covered, the system can adapt and use available microphones to maintain localization accuracy.
Data Source
AI summary
A sound source localization device, which has a plurality of sound pickup devices which record a sound signal and specifies a direction of a sound source based on sound signals recorded by at least two sound pickup devices of the sound pickup devices, includes a notification device that notifies information based on an arrangement of the sound pickup devices.