Szczegóły publikacji
Opis bibliograficzny
Coupled speakers directivity measurements for small acoustic omnidirectional source development / Bartłomiej CHOJNACKI, Tadeusz KAMISIŃSKI, Klara Juros, Daniel Kaczor // Vibrations in Physical Systems = Drgania w Układach Fizycznych ; ISSN 0860-6897. — 2019 — vol. 30 no. 1 art. no. 2019128, s. 1–6. — Bibliogr. s. 6, Abstr.
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 125995 |
|---|---|
| Data dodania do BaDAP | 2019-12-05 |
| Tekst źródłowy | URL |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Vibrations in Physical Systems = Drgania w Układach Fizycznych |
Abstract
Acoustic monopole construction is unsolved task, which engineers try to solve for many years. In the past they constructed many innovative solutions, such as spark or laser-gap sound sources, but those concepts caused many equipment troubles. It is impossible to select type of the measurements signal for this kind of sound sources, also any sparks and laser beams can provide strong electromagnetic distortions around the operation zone. In current state of art we are trying to provide non-standard solutions while traditional omnidirectional sound source, based on spatial configuration of electroacoustic transducers, is not described correctly and can be expanded. Paper presents concept of acoustic monopole source based on coupled configuration for electrodynamic loudspeakers, similar to isobaric setup but non-constant volume between the speakers. By using FEM modelling we will present directivity patterns and project ideas, describing how overall results corresponds with geometrical parameters of speaker configuration and parameters. Presentation summary contain results of prototype device directivity patterns measurements. Received characteristics shows big potential in using cone-to-cone coupled speaker setup to reach acoustic monopole in frequency range defined by distance between transducers. Achieved knowledge allows to provide broadband, easy to build and small acoustic monopole with many possible applications.
