Mobile phone technology Books
Verlag G. Mainz HD Telephony by Artificial Bandwidth Extension
Book SynopsisThe audio bandwidth of digital landline and mobile telephone networks is still mostly restricted to 200 Hz to 3.4 kHz. This is due to compatibility requirements during the transition phase from analogue to digital transmission technology. The resulting characteristic telephone speech is widely accepted, but the intelligibility of syllables is only 91%.Meanwhile, improved coding standards for so-called HD voice or Wideband Speech have been developed which are gradually being introduced into the networks. They support an audio frequency bandwidth of 50 Hz to 7.0 kHz with significantly increased audio quality and speech intelligibility. For a very long time however, new HD-telephones and old narrowband telephones have to co-exist. If an HD-terminal is connected over a narrowband link to an old telephone, the improved coding scheme cannot be used.In this thesis, signal processing concepts are developed for improving audio quality and intelligibility of narrowband speech by
£37.39
PHI Learning Mobile Computing
Book SynopsisThe book covers wireless communication fundamentals, 2G networks (GSM & IS-95), WLL, WLAN, data services, UMTS (3G), mobile computing tenets, protocols, and system design. It balances theory and implementation, includes examples/exercises, and targets students in various computer science and engineering disciplines.
£7.16
New India Publishing Agency Management Skills for Successful Agri
Book Synopsis
£56.36
£104.25
Independently Published The Future of Disruptive Technologies: Impacts on Business, Workforce, and Societies
£13.19
Nova Science Publishers, Inc. Digital Transformation â Modernization and
Book Synopsis
£67.99
