We propose a cross-layer approach with tightly-coupled time synchronization for real-time support and predictable lifetime in battery-operated sensor networks. Our design spans a sensor hardware platform with hardware-based global time synchronization, a TDMA link layer protocol with collision-free multi-hop support and node scheduling algorithms for maximum concurrency and streaming. Our dual-...

For many years (e.g., Cherry, 1953), hearing care professionals have understood the advantage of listening with two ears compared with one. In addition to improved intelligibility of speech in quiet, noisy, and reverberant environments, binaural versus monaural listening improves perceived sound quality and decreases the effort listeners must expend in order to understand a target voice of inte...

For many years (e.g., Cherry, 1953), hearing care professionals have understood the advantage of listening with two ears compared with one. In addition to improved intelligibility of speech in quiet, noisy, and reverberant environments, binaural versus monaural listening improves perceived sound quality and decreases the effort listeners must expend in order to understand a target voice of inte...

Steganography over real-time streaming media is a novel and promising research subject. This paper performs steganography over a typical streaming media, Voice over IP (VoIP), and suggests a new covert communication scheme for interactive secret messages. To resist the statistical detection, a sophisticated compounded pseudorandom sequence, produced by a compounded pseudorandom number generator...

Listeners are thought to be capable of perceiving multiple voices in music. Adopting a perceptual view of musical ‘voice’ that corresponds to the notion of auditory stream, a computational model is developed that splits a musical score (symbolic musical data) into different voices. A single ‘voice’ may consist of more than one synchronous notes that are perceived as belonging to the same audito...

As wireless networks become more widely used, there is a growing need to support advanced services, such as real-time multimedia streaming and voice over IP. Real-time traffic in wireless ad hoc networks often have stringent bandwidth or delay requirements. For example, a delay of over 150 ms in voice transmissions is felt as disturbing by most users. To support quality of service (QoS) require...

Next generation Internet backbone node technologies are proposed that offer sophisticated QoS support including real time voice, video streaming, and VPN. The backbone network consists of small size IP + ATM nodes (Type-S) and backbone core nodes (Type-X). Type-S nodes support both ATM bearer and IP QoS services. In addition, the traffic control set between input line card buffer and output lin...

PT. Laxo Global Akses, which is better known as LAXO, an Internet Service Provider (ISP) that has official license to operate nationally in Indonesia. LAXO also registered active member of APJII (Indonesian Providers Association). services provided by include all internet such network installation, browsing, email, streaming (video / voice), hotspots, VPN (Virtual Private Network), conference m...

The wide-band code division multiple access (WCDMA) based third generation wireless communication systems are designed to meet the increasing demands for high data rate applications and greater mobility. High data rate applications include voice, video telephony, Video streaming, File Transfer protocol (FTP), high quality image and wireless full internet access. WCDMA systems are expected to of...