Acoustic performance of eleven commercial phone booths according to ISO 23351-1
Hongisto, Valtteri; Keränen, Jukka (2021)
Turun ammattikorkeakoulu
2021
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Julkaisun pysyvä osoite on
https://urn.fi/URN:ISBN:978-952-216-774-3
https://urn.fi/URN:ISBN:978-952-216-774-3
Tiivistelmä
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.