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Others
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| Highly Realistic Active Control of Sound Field |
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Background and Objectives |
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This technology to control sound enables an audience to listen to a musical performance in an environment with excellent acoustics, even in a facility not designed exclusively for music, such as in a multi-purpose auditorium. STRL has studied a loudspeaker wall (loudspeaker arrays installed over an entire wall) that reproduces the sound field of a concert hall in a small space like a living room. We recently introduced this technology to the STRL auditorium, in order to develop an audio system with good acoustics at any seat in a large space.
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Overview |
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This system electronically adds reverberations to the sound picked up with a microphone placed close to a sound source. It then reproduces the sound using seven pillar-type loudspeaker arrays installed on each sidewall of the auditorium. This system has the following characteristics.
- The system provides high-quality reverberation at any seat of the auditorium by individually controlling each pillar loudspeaker array, and the audience does not notice the sound from a particular loudspeaker even in the vicinity of the wall.
- While the reverberation time in the auditorium is approximately 0.7 seconds, the electronic generation and control of the reverberation enables us to freely choose suitable reverberation time for the musical instrument or music being played.
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Future Work |
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Toward an audio system with even stronger sensation of reality, research will continue on loudspeaker driving methods and methods for increasing reverberation.
This exhibition will be presented in the auditorium on Saturday. (11:30 a.m. to 3:30 p.m.)
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