Review of acoustic sources alternatives to a dodecahedron speakerReview of acoustic sources alternatives to a dodecahedron speaker Ανασκόπηση Review 2020-04-302019enAn 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.http://creativecommons.org/licenses/by/4.0/Applied Sciences (Switzerland)918Papadakis_et_al_Appl Sci_9(18)_2019.pdfChania [Greece]Library of TUC2020-04-29application/pdf673.6 kBfree Papadakis Nikolaos Παπαδακης Νικολαος Stavroulakis Georgios Σταυρουλακης Γεωργιος MDPI Acoustic measurements Acoustic parameters Auralization Dodecahedron Impulse response measurements ISO 3382 Omnidirectional source Reverberation time Sound source