The Institute for Safe, Quiet, and Durable Highways(SQDH), at the Ray Herrick Laboratories at Purdue University has built a device to test the noise generated from pavement – tire interaction. The pavement is attached to a circular drum and a tire rotates over the curved pavement surface.
Read more on the Purdue University web site.
Lord Corporation, North Carolina USA, have successfully installed an Active Vibration Control system in the Hindustan Aeronautics Advanced Light Helicopter, otherwise known as the Indian DHRUV. The system uses active Frahms to monitor and reduce vibration in the fuselage generated by the main rotor and the rotor aerodynamics.
Read the press release on the Lord Corporation web site.
Causal Systems has released the latest version of ENC, Engineering Noise Control software. The software evaluates practically all of the expressions and algorithms in the book, Engineering Noise Control 2nd edition by
DA Bies and CH Hansen.
Order the software from Causal Systems.
Suss MicroTec and DELTA (Danish Electronics, Light and Acoustics) have created a website called Memunity that is dedicated to testing of microelectromechanical systems (MEMS). MEMUNITY and its members have techniques for testing MEMS accelerometers and microphones whilst they are still on the wafer.
Read more on the MEMUNITY web site.
Andromed has released an electronic stethoscope that has filtering to reduce ambient noise and noise generated by hand movement. It also has an auto-muting function that eliminates impact noise if the sensor is struck, or if the patient coughs.
Read more on the Andromed web site.
Innovative DSP have released a new DSP card for use with audio, vibration and sonar applications. The card has signal inputs for up to 32 channels at 24 bit resolution, up to 192kHz, and 6 analog outputs at 24 bit resolution. The card uses a Texas Instruments C6711 processor.
Read more on the Innovative DSP web site.
I’ve added a Classifieds section that contains job adverts that I have seen, or people have sent in. There are also For Sale and Wanted sections. If you want to sell anything related to acoustics or vibration, or have a job offer, you are welcome to put a notice here for free.
Nikon have released another camera lens in their VR – vibration reduction series, the AF-S VR Zoom-Nikkor 24-120mm f/3.5-5.6G IF-ED lens. The active vibration control help reduce the blurring of images that frequently occurs when taking pictures in low light conditions.
A professor at the Medical College of Georgia, is studying zebra fish that can regrow the hair inside their ears responsible for hearing. He is trying to find the genes responsible for that regrowth and see if they can be applied to human hearing problems.
Senera is a start-up company that provides structural health monitoring of bridges and tunnels using wireless transducers. Their concept is to continuously monitor the structures, with the goal of providing their customers with reduced maintenance costs, by not having to manually inspect the structures as frequently.