Digital underwater acoustic voice communications

Author

Woodward, Bryan ; Sari, Hayri

Author_Institution

Dept. of Electron. & Electr. Eng., Loughborough Univ. of Technol., UK

Volume

21

Issue

2

fYear

1996

fDate

4/1/1996 12:00:00 AM

Firstpage

181

Lastpage

192

Abstract

This paper describes the design of an underwater acoustic diver communication system controlled by a digital signal processor. The speech signal transmission rate is compressed by using linear predictive coding (LPC) and the extracted parameters are transmitted through the water to a synchronized receiver by employing digital pulse position modulation (DPPM). The pulse position in each time frame is estimated by an energy detection and decision algorithm which enables the received LPC parameters to be recovered and used to synthesize the speech signal

Keywords

acoustic signal detection; digital communication; linear predictive coding; pulse position modulation; speech coding; speech synthesis; underwater sound; voice communication; DPPM; LPC; LPC parameters; digital pulse position modulation; digital signal processor; digital underwater acoustic voice communications; energy decision algorithm; energy detection algorithm; linear predictive coding; pulse position; speech signal synthesis; speech signal transmission rate; synchronized receiver; transmission rate compression; underwater acoustic diver communication system; Acoustic pulses; Communication system control; Control systems; Digital control; Linear predictive coding; Pulse modulation; Signal design; Speech synthesis; Underwater acoustics; Underwater communication;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.486793

Filename

486793