Rapport et Proces-Verbaux des Reunions - Volume 189 - 1990 - Partie 11 de 53.pdf (1.17 MB)
An alternative to thresholding during echo-integration data collection
reportposted on 2023-05-09, 08:28 authored by E. P. Nunnallee
Determination of threshold to reduce the amount of noise included in echo-integration data has always been a relatively arbitrary operation. Values selected in the field often are too low and allow noise integration or are too high and bias against low fish-density situations. This paper describes an alternative method for reduction of non-reverberatory (ambient) acoustical noise and electrical interference encountered during echo-integration data collection. Automatic or manual implementation may be easily accomplished.