This chapter addresses the introduction of a Multi-service Provisioning Platform (MSPP) into the transmission segment of the communication network. The first company to do so was Cerent Corporation. Although it was initially introduced in the United States in 1998, acceptance was rapid, and MSPPs found there way into the balance of the world market shortly thereafter. MSPP innovation enabled bo...

Compared to traditional (PSTN) voice networks, a Voice over Internet Protocol network is a convergence of a signaling network and a data network using Internet Protocol (IP). The use of shared media by VoIP systems opens the door to some uncertainty as to the source of a call. While in the traditional voice networks one has to tap into a specific circuit to eavesdrop, in an IP network any equip...

The rollout of multiple radio access mobile communication networks raises new challenges regarding quality of provided mobile services. Voice and video telephony are the key services that must continuously be under performance assessment and optimization. Speech and video quality in live GSM and UMTS networks are crucial performance indicators which can be measured and evaluated via drive-tests...

In the program controlled exchange technology college course, the signal transmission and voice data exchange for the communication system were usually achieved by utilizing the program controlled telephone exchange equipment choosing MT8980 series chip as the processing core which was limited to the numbers of communication channels and inflexibility of information interchange manners. A varie...

161 Abstract— Recently, According to increasing interest to original sound Karaoke instrument, MIDI type karaoke manufacturer attempt to make more cheap method instead of original recoding method. Separating technique for singing voice from music accompaniment is very useful in such equipment. We propose a system to separate singing voice from music accompaniment for stereo recordings. Our syst...

A web-based listening test measured intelligibility across speech rate of 8 TTS systems and of a linearly timecompressed human speech reference voice. The synthesis systems included 2 independent representatives of each of the following 4 synthesis methods: formant, diphone concatenation, unit selection concatenation, and HMM. For each TTS system, a female and a male American English voice were...

Voice over Internet protocol (VoIP) is a new way of communicating. It is a technology that allows users to make telephone calls over an IP network. This paper will describe Voice over Internet Protocol (VoIP) to a level that allows discussion of security issues and concerns. Business concerns of implementing VoIP, components of a VoIP system, and relevant security issues and concerns as they ap...

Our focus is on organizations that deploy and troubleshoot voice over IP (VoIP) networks. These groups may be professional services or pre-and post-sales engineering groups. A big problem with VoIP is the quality of calls, which is most affected by convergence with existing data network traffic. In most scenarios, the data network will require tuning in order to achieve acceptable quality for v...

Traditionally the interest in voice gender conversion was of a more theoretical nature rather than founded in real– life applications. However, with the increase in mobile communication and the resulting limitation in transmission bandwidth new approaches to minimising data rates have to be developed. Here voice gender normalisation (VGN) presents an efficient method of achieving higher compres...

I nternet telephony, also known as voice over IP, may finally be ready for prime time in 2004. An increasing number of IP telephony providers , traditional phone carriers, and now cable companies—includingage—are offering a growing range of corporate and residential services nationwide. Internet telephony is attractive to customers because it uses lower-cost equipment and is less expensive to o...