Study on underwater acoustic voice communication system for divers

2012 ◽  
Vol 131 (4) ◽  
pp. 3277-3277 ◽  
Author(s):  
Lihua Lei ◽  
Feng Xu
Keyword(s):  
Communication System ◽  
Voice Communication ◽  
Underwater Acoustic

Implementation Of The Innovative Radiolocalization System VCS-MLAT (Voice Communication System – Multilateration)

2020 ◽  
Author(s):  
Szymon Wiszniewski ◽  
Olga Blaszkiewicz ◽  
Alicja Olejniczak ◽  
Jaroslaw Sadowski ◽  
Jacek Stefanski
Keyword(s):  
Communication System ◽  
Voice Communication

PENGARUH PENGGUNAAN CODEC STANDART ITU G.729 TERHADAP SISTEM KOMUNIKASI VOIP

2021 ◽  
Vol 17 (1) ◽  
pp. 11-22
Author(s):  
Wahyu Adi Prijono
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
Internet Protocol ◽  
Voice Over Internet Protocol ◽  
Data Communications ◽  
Voice Communication ◽  
Internet Telephony ◽  
Voice Signal ◽  
Ip Network ◽  
Packet Switch

Voice over Internet Protocol (VoIP) is a technology that is capable of passing voice traffic, in the form of packets through the network Internet Protocol (IP). IP network itself is a data communications network based packet-switch. The voice signal before experiencing bundled voice coding or format conversion of sound into digital form that can be passed over an IP network. Telephony, Internet telephony, or termed VoIP (Voice Over Internet Protocol.This communication system use VoIP (Voice over Internet Protocol), ie voice calls over data services (internet). This communication was developed using Android-based devices. Based on characteristics, android devices are open source, so users do not need to have a license to be able to have android-based devices. In addition, the android device that must be connected to a SIP (Session Iniation Protocol) is a data service that can be done with a paid subscription of the user of the operator using a conventional pulse. Telecommunications designed will use a hybrid system, the merger between VoIP communications with data communications GSM network. With basic calculations where Coding standards G 729, is a standard that can be used for voice communication system through data networks with rate of 8 Kbps. The implementation of the G729 codec is effect on communication systems VOIP.

Subjective Quality Evaluation of Underground BPL-PLC Voice Communication System

2020 ◽  
pp. 176-186
Author(s):  
Grzegorz Debita ◽  
Przemyslaw Falkowski-Gilski ◽  
Marcin Habrych ◽  
Bogdan Miedzinski ◽  
Bartosz Polnik ◽  
...  
Keyword(s):  
Communication System ◽  
Quality Evaluation ◽  
Subjective Quality ◽  
Voice Communication
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