Szczegóły publikacji
Opis bibliograficzny
Coupled speakers as an improved omnidirectional sound source for architectural acoustics measurements / Bartłomiej CHOJNACKI, Tadeusz KAMISIŃSKI, Artur FLACH // W: e-Forum acusticum 2020 [Dokument elektroniczny] : 7–11 December 2020, Lyon, France. — Wersja do Windows. — Dane tekstowe. — [Lyon : INSAVALOR], [2020]. — S. 155–158. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: https://hal.archives-ouvertes.fr/hal-03235288/document [2022-04-27]. — Bibliogr. s. 157–158, Abstr.
Autorzy (3)
Dane bibliometryczne
| ID BaDAP | 134044 |
|---|---|
| Data dodania do BaDAP | 2021-05-07 |
| DOI | 10.48465/fa.2020.0699 |
| Rok publikacji | 2020 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
Abstract
The omnidirectional sound source is an essential device in acoustic measurements according to standards ISO 354, ISO 3382,or ISO 140. In the current state of the art, we can found papers (Ingo 2005, San martin 2008, Knuttel 2013) showing the impact of the sound source's not-ideal omnidirectional character and its impact on parameters measured in room acoustics investigation. Obtained results of acoustic parameters, such as C80, D50 can differ by few JND orders regarding the source rotation on the stand, changing the direction faced by loudspeakers in the standard dodecahedral source. In this paper, we propose a new type of omnidirectional sound source based on coupled speakers. The proposed device contains two electrodynamic loudspeakers in a closed enclosure. Using this solution, we receive an omnidirectional spatial response with only two speakers. The effect of source rotation is remarkably limited. The research presents the proposed solution's directivity rating and sample room acoustic measurements to investigate the influence of source directivity on received results. Results comparison with previous research findings will be discussed to review a new type of the source improved room acoustic measurements.
