A company called AADcontrol have a ‘new’ technology to reduce the vibration of towers on 1MW turbines, called ‘Active Aerodynamic Damping’.

Perpetuum, a UK based company have released a product for energy ‘harvesting’ from vibrating machinery. The PMG7 generator outputs at much as 5 mW at 3.3V from a vibration level of 100 mg.

Another company RLW has used this principle in a wireless vibration condition-monitoring product.

Bruel and Kjaer have released a new instrument called the Human Vibration Analyzer Type 4447.

Bruel and Kjaer, MSC (Material Sciences Corporation), and Link Engineering have built a new testing facility in Canton, Michigan, USA for design and testing of Noise Vibration Harshness issues related to automotive and communications equipment.

Perpetuum have released a device to convert vibration into electricity. The device is capable of generating 5mW of power, which is usually sufficient for powering many wireless transmitters.

See the news release for more information.

Mathematicians at Vanderbilt University have created a mathematical model of the cochlea and use the model to show that the spiral shape acts to enhance the low frequency sounds. The researchers led by Daphne Manoussaki and her colleagues, Richard Chadwick and Emilios Dimitriadis of the National Institutes of Health, published their findings in the journal Physical Review Letters.
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