Acoustic performance of eleven commercial phone booths according to ISO 23351-1
Tekijä(t): Valtteri Hongisto & Jukka Keränen
ISBN: 9789522167743 (pdf)
Research Reports from Turku University of Applied Sciences 51
22 pp., 2020
The purpose of this study is to determine the speech level reduction DS,A for 11 typical phone booths and analyze how the results fall to the classes A+, A, B, C, and D defined in ISO 23351-1.
(pdf file, 1 Mb)
The publication can be downloaded for free. This copyrighted material can be downloaded and printed for private use. Commercial use prohibited.
(pdf file, 1 Mb)
The publication can be downloaded for free. This copyrighted material can be downloaded and printed for private use. Commercial use prohibited.