Pioneer has developed a speaker system called the PDSP-1, the world’s first digital sound projector, that uses 254 2.5 inch speakers to create 5.1 virtual channels. The speaker unit is only 5 inches thick and delivers 500W of power. The system was developed in conjunction with 1 Ltd, a technology development and licensing company.
Read the news article on the Pioneer Electronic web site.
Read about the technology on the 1 Ltd web site.
Bone loss is a serious problem for astronauts and they do rigourous daily exercise to reduce the hazard. The International Space Station is equipped with a treadmill that astronauts have to use for about an hour a day. When the TVIS (treadmill vibration with isolation system – there is an acronym for everything) is used, vibration is generated that transmits through the space station and can affect vibration sensitive equipment and experiments.
Read more on the NASA research web site.
Researchers at Purdue University are using a neural network to identify noise and vibration problems on automobiles. A large part of the program involves characterizing the noise and vibration signals from various sub-systems, such as exhaust system, power train, suspension etc, with their associated faults such as floor vibration, cavity boom etc. The work is being funded by ArvinMeritor, a large automotive systems and parts supplier.
Read more on the Purdue University web site.
NXT is a company in the UK that has developed flat panel speakers. They make speakers for ceiling tiles, transparent speakers, car speakers, speakers for PAs, picture panels, speaking billboards, and has also been incorporated into the lid of an ACER laptop. Their latest product Audio Full Range (AFR) loudspeaker is a compact single-diaphragm, drive unit that is meant to replace the woofer, tweeter and associated filter components. The product is targeted for use the automotive industry.
Read more on the NXT web site.
There hasn’t been news to report recently, so you haven’t seen many new articles on the web site. There have been many new additions to the web site such as conference listings and a couple more files to download.
Go to the Bruel & Kjaer in the UK.
Gas turbine engines used in power generation and jet engines generate substantial noise from the combustion process, and the interaction of the expanding hot gases and the combustion chamber. Researchers have found that by using fuel injectors that are phased to release fuel at the correct time, the combustion pulses can be used to damp the system.
Read the full story on the ASME web site.
The recent release of a tape recording of Osama bin Laden’s voice has officials questioning the authenticity of the speaker. Signal processing techniques and speech analysts have been employed to determine if the recording is of bin Laden or a skilled impersonator.
Read the story on yahoo.com.
HBM, a manufacturer of strain gauges and equipment, have released a software package called catman, for collecting large numbers of channels of strain gauge data.
Read more on the HBM web site.
Ometron have released a new scanning laser vibrometer, model XVI, that can measure vibration at 16 locations simultaneously, which means it is possible the study of transient and non-repeatable events.
Read more on the Ometron web site.