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4-channel beamforming sound source visualization system and certificate of merit
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Two companies, including this one, received the Acoustical Society of Japan Technology Development Award for fiscal year 2017.
The Technology Development Award was established in 1993 by the Acoustical Society of Japan with the aim of promoting acoustic technology.
The selection will be based on achievements that have contributed to the advancement and development of engineering technology related to acoustics.
- Equipment and industrial technologies developed by applying research findings in acoustic engineering that are recognized as having made a significant contribution to related fields.
- Equipment, industrial technologies, etc., used in research and development of acoustic engineering, which are recognized as having made a significant contribution to the progress of research and development.
- This refers to projects that have been recognized as having made a significant contribution to the creation and improvement of sound environments by applying research findings in acoustic engineering.
- In addition to the above, this also includes technological development related to acoustics that is recognized as having made a significant contribution to the relevant field.
This project received the Technology Development Award as a technology and achievement that met the above selection criteria.
[Background of the award]
Sound source visualization technology is used in various fields, and many technologies have been commercialized. However, it generally requires many microphones, resulting in a large system size, poor portability, and unsuitability for measurements in small spaces.
The "4-channel beamforming sound source visualization system" utilizes the minimum variance method for beamforming processing, enabling real-time visualization of sound sources at 5 times per second using only four microphone probes.
This has enabled the miniaturization of the system, making it possible to visualize sound sources even in narrow spaces where measurement was previously difficult. Furthermore, by switching between two types of probes with different microphone spacings, it is possible to locate sound sources from 500 Hz to 8 kHz, and offline processing with 25 analyses per second allows for intuitive detection of the reduction of single decaying sounds of about 0.5 seconds, such as the sound of a door closing.
This technology, which incorporates various features while being compact and practical, has earned us the Technology Development Award.
