Acoustic vector sensor beamforming reduces masking from underwater industrial noise during passive monitoring.
J Acoust Soc Am
; 139(4): EL105, 2016 04.
Article
en En
| MEDLINE
| ID: mdl-27106345
ABSTRACT
Masking from industrial noise can hamper the ability to detect marine mammal sounds near industrial operations, whenever conventional (pressure sensor) hydrophones are used for passive acoustic monitoring. Using data collected from an autonomous recorder with directional capabilities (Directional Autonomous Seafloor Acoustic Recorder), deployed 4.1 km from an arctic drilling site in 2012, the authors demonstrate how conventional beamforming on an acoustic vector sensor can be used to suppress noise arriving from a narrow sector of geographic azimuths. Improvements in signal-to-noise ratio of up to 15 dB are demonstrated on bowhead whale calls, which were otherwise undetectable using conventional hydrophones.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Vocalización Animal
/
Acústica
/
Agua
/
Monitoreo del Ambiente
/
Industria del Petróleo y Gas
/
Ruido
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
J Acoust Soc Am
Año:
2016
Tipo del documento:
Article
País de afiliación:
Estados Unidos