One of the most demanding challenges in the field of audio engineering is the transmission of low-latency high quality audio streams over networks. While several protocols nowadays allow wired local network streaming,...
详细信息
ISBN:
(纸本)9781467345965
One of the most demanding challenges in the field of audio engineering is the transmission of low-latency high quality audio streams over networks. While several protocols nowadays allow wired local network streaming, much effort is still required to achieve similar goals over existing wireless LAN technologies. While the challenge is still far from being solved, several design issues can be highlighted and future scenarios can be outlined. this paper proposes the setup of a wireless music production system based on open hardware and open software which requires relatively low setup effort while allowing for a high flexibility of use. the hardware platform is the Beagleboard, based on Texas Instruments DM3730, running a GNU/Linux OS and the computer music language Pure Data. Such a device can capture electric instrument audio, generate sound, send MIDI or OSC control data, and stream to PCs and other embedded devices operating as mixers, effect racks and so on, enabling an ecosystem of flexible and open devices. Tests conducted on a home wireless network show acceptable latency for many applications.
Over the recent years, novel low-power microcontrollers have been introduced. this has allowed the development of various applications, which can operate over long periods of time and fulfill their tasks having very l...
详细信息
Over the recent years, novel low-power microcontrollers have been introduced. this has allowed the development of various applications, which can operate over long periods of time and fulfill their tasks having very limited amount of energy, such as e.g., Wireless sensor Networks (WSN).Nonetheless, for fulfilling their tasks such devices in addition to the central processor often have to include several microcontrollers or some peripherals, such as sensors, external memory chips or other application-specific hardware. All those peripherals, except the energy for actual operation also require some energy for communicating to the central processor. In the paper we are investigating and comparing the energy consumption for three most widely used embeddedsystems' digital serial interfaces, namely I2C, SPI and UART. the presented results have been obtained using the real-life microcontroller (PIC18F family from Microchip) and reveal the energy consumption for different interface implementation methods (hardware vs. software) and various scenarios (idle interface, different data transmit or receive scenarios). the presented data can be valuable as well for researchers and engineers and allow to choose the most energy efficient communication interface and its implementation method to be used in the most energy-critical applications.
In this demonstration, we present the architecture, implementation, and applications of LiveSynergy - - a system that provides reliable proximity sensing and open interactive abstractions for physical spaces and objec...
详细信息
In this poster, we propose a new tool, i.e. a node placement adviser, which supports deployment workers of sensor networks. the adviser tool is realized in the form of mobile terminal software and acts as a proxy of a...
详细信息
Most current sensor nodes are composed of a microcontroller and a radio. their real-time and peak performance would be a bottleneck when executing compute-intensive tasks. Several works demonstrate that adding a hardw...
详细信息
Assessing the connectivity of Wireless sensor Networks in the specific environment in which they are deployed is crucial to develop reliable system services and understand their behavior. In this demo, we introduce Tr...
详细信息
Modern buildings include an indoor climate control system, installed and operated to maintain a comfortable environment for the building occupants. However, these climate control systems consume a significant amount o...
详细信息
In this demonstration, a systematically domain-specific model checker, NesC@PAT, is presented. the tool takes NesC programs as input, and automatically verifies WSNs against properties specified in the form of deadloc...
详细信息
In this demo, we design a monitoring system based on sensor network for zoologists to research the activity budget of Rhinopithecus roxellana. We designed the hardware platform of the system for wild deployment and pr...
详细信息
暂无评论