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The role of Under-balcony Speaker in the Multimedia Environmental  

Song, Deog-Geun (서울과학기술대학교 NID융합대학원)
Park, Eun-Jin (서울과학기술대학교 정보통신대학 전자IT미디어공학과)
Lee, Seon-Hee (서울과학기술대학교 정보통신대학 전자IT미디어공학과)
Publication Information
Journal of Satellite, Information and Communications / v.10, no.2, 2015 , pp. 86-89 More about this Journal
Abstract
Formula acoustic characteristics of the room with a double layer, are compared through simulation and actual measurement. The rear area of the under- balcony speakers will cause a delay difference between the main speaker. In the mid / bass parts do not generate sufficient pressure is lowered and comb-Filtering phenomenon occurs significantly. The lower right area of the under- balcony speakers and speaker distance is the sound pressure of the under- balcony speakers to around 2 ~ 3m bigger than the main speakers and the sound image matches the pulpit is broken. Also, under area is more than 5 ~ 6m from the balcony outside speakers and causes differ by more than 10dB lower than the under- balcony speakers depending on the local laws of Translator wins Well, the main speaker at mid / high frequency sounds do not enter the sound pressure variations will drop by a significant. Appropriate arrangement and the output of the speaker according to the position under the balcony, and output of the main speakers are requested to minimize this problem sound. The proper sound design direction for the under- balcony speakers must be presented in order to improve the lower balcony area more pleasant acoustic environment.
Keywords
Sound Localization; Under_Bacony Speaker; Inverse Square Law; Comb-Filtering;
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  • Reference
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