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Perceived spatial extent of local active noise control for broadband disturbances

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Název: Perceived spatial extent of local active noise control for broadband disturbances
Autoři: Felix Holzmüller (Institut 17 Elektronische Musik und Akustik, Universität für Musik und darstellende Kunst Graz), Alois Sontacchi (Institut 17 Elektronische Musik und Akustik, Universität für Musik und darstellende Kunst Graz)
Zdroj: Proceedings of the AES 5th International Conference on Automotive Audio
Informace o vydavateli: Audio Engineering Society
Rok vydání: 2024
Témata: ANC, Active Control, Active Noise Control, Active Noise Cancellation, Noise Control, Noise Cancellation, Noise, Loudness, Headrest, Broadband, IACF, IACC
Popis: This paper investigates the perceived spatial extent of a local active noise control system for different types of disturbances. Several publications determined size and shape of the zone of quiet for various arrangements through analytical and numerical methods. However, these studies have often overlooked human perception, focusing solely on technical properties. Therefore, a listening experiment has been conducted to determine the perceived size of the zone of comfort in a scenario close to reality, using an active headrest setup. Several operational frequency limits for different types and directions of broadband disturbances are examined. Within this experiment, lateral transitions to the front and head rotations at the target position have been considered. Statistically consolidated subjective ratings exhibit limits of around 2 cm to 4 cm for lateral transitions, with an expected decrease towards higher frequencies. When comparing participants’ answers to measurements, the majority of the median responses converge at a point with loudness reduction of 20 %. The rotational limits of 7° to 15° are not as dependent on frequency, but are confined by the distinct perception of the secondary sources as well.
Druh dokumentu: text
Popis souboru: application/pdf
Jazyk: English
Relation: https://phaidra.kug.ac.at/o:134790
Dostupnost: https://phaidra.kug.ac.at/o:134790
Rights: http://rightsstatements.org/vocab/InC/1.0/ ; open access
Přístupové číslo: edsbas.945F9CF6
Databáze: BASE
Popis
Abstrakt:This paper investigates the perceived spatial extent of a local active noise control system for different types of disturbances. Several publications determined size and shape of the zone of quiet for various arrangements through analytical and numerical methods. However, these studies have often overlooked human perception, focusing solely on technical properties. Therefore, a listening experiment has been conducted to determine the perceived size of the zone of comfort in a scenario close to reality, using an active headrest setup. Several operational frequency limits for different types and directions of broadband disturbances are examined. Within this experiment, lateral transitions to the front and head rotations at the target position have been considered. Statistically consolidated subjective ratings exhibit limits of around 2 cm to 4 cm for lateral transitions, with an expected decrease towards higher frequencies. When comparing participants’ answers to measurements, the majority of the median responses converge at a point with loudness reduction of 20 %. The rotational limits of 7° to 15° are not as dependent on frequency, but are confined by the distinct perception of the secondary sources as well.