| DOI | Trouver le DOI : https://doi.org/10.1177/1045389X16667553 |
|---|
| Auteur | Rechercher : Chen, Yong1; Rechercher : Ghinet, Sebastian1; Rechercher : Price, Andrew1; Rechercher : Wickramasinghe, Viresh1; Rechercher : Grewal, Anant1 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Aérospatiale
|
|---|
| Format | Texte, Article |
|---|
| Résumé | High noise levels in the helicopter cabin adversely affect aircrew communication and reduce comfort in the short-term and may lead to hearing loss in the long-term if flight helmets cannot provide sufficient protection to the aircrew. A cabin noise exposure survey has been performed on a Royal Canadian Air Force CH-147F Chinook heavy lift helicopter to evaluate the noise environment and noise protection performance of the flight helmet. Investigation results showed that the low-frequency noise attenuation provided by the Royal Canadian Air Force flight helmet was marginal in high-speed flight conditions that generate loud cabin noise. Therefore, in-canal earphone integrated with active noise cancellation capability was investigated to provide enhanced noise protection and improve clarity in voice communication. Simulation and proof-of-concept test results verified that active noise cancellation in-canal earphones can serve as a feasible technical solution to provide enhanced noise attenuation to mitigate the low-frequency N/rev tonal noise generated by the aerodynamic pressure from the helicopter rotor blades. |
|---|
| Date de publication | 2016-09-13 |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro NPARC | 23000784 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 2bea2e40-2e0e-47b1-8502-6547787ad1db |
|---|
| Enregistrement créé | 2016-09-22 |
|---|
| Enregistrement modifié | 2020-03-16 |
|---|
