Review of Acoustic Sources Alternatives to a Dodecahedron Speaker

Applied Sciences

NikolaosM. Papadakis¹  GeorgiosE. Stavroulakis¹ 

[1] Institute of Computational Mechanics and Optimization (Co.Mec.O), School of Production Engineering and Management, Technical University of Crete, 73100 Chania, Greece;

关键词: acoustic measurements;    impulse response measurements;    omnidirectional source;    dodecahedron;    acoustic parameters;    sound source;    reverberation time;    ISO 3382;    auralization;   

DOI  :  10.3390/app9183705

来源: DOAJ

【 摘 要 】

An omnidirectional source is required in many acoustic measurements. Commonly a dodecahedron speaker is used but due to various factors (e.g., high cost, transportation difficulties) other acoustic sources are sometimes preferred. In this review, fifteen acoustic source alternatives to a dodecahedron speaker are presented while emphasis is placed on features such as omnidirectionality, repeatability, adequate sound pressure levels, even frequency response, accuracy in measurement of acoustic parameters and fulfillment of ISO 3382-1 source requirements. Some of the alternative acoustic sources have the appropriate features to provide usable results for acoustic measurements, some have acoustic characteristics better than a dodecahedron speaker (e.g., omnidirectionality in the high-frequency range), while some can potentially fulfill the ISO 3382-1 source requirements. Collected data from this review can be used in many areas (e.g., ISO measurements, head-related transfer functions measurements) for the appropriate selection of an acoustic source according to the expected use. Finally, suggestions for uses and future work are given aimed at achieving further advances in this field.

【 授权许可】

Unknown