Wideband speech coding standards and wireless services [Guest editoral

2006 ◽  
Vol 44 (5) ◽  
pp. 56-57 ◽  
Author(s):  
S. Ferraz de Campos Neto ◽  
K. Jarvinen
Keyword(s):  
Speech Coding ◽  
Wireless Services ◽  
Coding Standards

Current Methods of Speech Coding

1997 ◽  
Vol 08 (01) ◽  
pp. 13-68 ◽  
Author(s):  
Richard V. Cox
Keyword(s):  
Speech Coding ◽  
Cost Effective ◽  
Cellular Telephony ◽  
Effective Manner ◽  
Coding Standards ◽  
Ordinary Person

Digital speech coding is used in a wide variety of every day applications that the ordinary person takes for granted, such as network wireline and cellular telephony and telephone answering machines. This article reviews some of the most currently used methods of speech coding. This includes reviewing the basic attributes of these coders, the methods used for coding and some of the most important speech coding standards. It also reviews the methods used to realize digital speech coders, especially those for implementing these coders in a cost effective manner.

Experimental Investigation on a Radio-on-free-space Optical System Suitable for Provision of Ubiquitous Wireless Services

PIERS Online ◽  
2010 ◽  
Vol 6 (5) ◽  
pp. 400-405 ◽  
Author(s):  
Mitsuji Matsumoto ◽  
Kamugisha Kazaura ◽  
Kazuhiko Wakamori ◽  
Takeshi Higashino ◽  
Katsutoshi Tsukamoto ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Optical System ◽  
Free Space ◽  
Free Space Optical ◽  
Wireless Services

Polymedia and Mobile Communication

2020 ◽  
pp. 67-80
Author(s):  
Mirca Madianou
Keyword(s):  
Mobile Communication ◽  
Internet Access ◽  
Portable Devices ◽  
Wireless Services ◽  
Wide Availability

This chapter identifies how the theory of polymedia is integrally linked to developments in mobile communication. The term polymedia aims to capture media as composite environments—instead of discrete technologies—which users navigate in order to manage their relationships. The popularization of internet-enabled portable devices, such as smartphones and tablets, and the parallel wide availability of wireless services have given rise to a culture of ubiquitous connectivity. Smartphones enable the accessing of a mini-ecosystem of platforms and applications while on the move. The related affordances of ubiquitous connectivity, portability, and fluidity between platforms are vital for the emergence of polymedia practices. Mobile communication developments have also contributed to improved internet access, which is one of the preconditions for polymedia practices to emerge. The theory of polymedia in turn offers a distinctive approach for understanding smartphones as mini-ecosystems in their own right and, ultimately, for understanding the micro-workings of mobile communication.

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