Breathing noise elimination in through-water speech communication between divers.
Breathing noise and bubble noise are the main factors affecting the subjective quality of through-water speech signals in communications between divers wearing full-face masks or aural-nasal masks. Only breathing noise is considered here, which can be gated out by applying a combination of zero-crossing detection and energy measurements to noisy speech signals above predetermined threshold values. The signals are picked up by a microphone placed close to the diver's mouth in the air cavity of the mask. Results were obtained during diving trials with four different types of masks.
Woodward
B
B
Department of Electronic and Electrical Engineering, Loughborough University, United Kingdom. b.woodward1@lboro.ac.uk
Sari
H
H
D003142:Communication; D004242:Diving; D006801:Humans; D008954:Models, Biological; D009622:Noise; D012119:Respiration; D013060:Speech; D014867:Water
D014867:Water