Tag Archive: deafening noise

This is fascinating:

crash-photo

Mercedes-Benz E-Class will blast pink noise at you just before an accident, to protect your ears.  That’s right, in an effort to cut down on “hearing damage caused by the deafening crunch of a car crash,” Mercedes-Benz is going to “blast[] pink noise through the stereo when you’re about to hit something.”  What will the pink noise do?  It will “trigger a fascinating physical response…known as the acoustic reflex, or stapedius reflex – an involuntary muscle contraction in the middle ear that effectively dampens the vibrational energy that’s transferred to the cochlea.”  Essentially, the reflex action will reflect some of the noise from a crash back through the ear drum, thus avoiding the inner ear.  Click the link to learn more.

 

 

 

South Pasadena Becomes Nation’s First AGZA Green Zone® City

South Pasedena’s parks and lands are now free of deafening noise and toxic pollution from gas-powered landscape maintenance equipment.

Quiet Communities has announced that South Pasadena has taken the first brave step forward and switched the maintenance of “all 41 acres (!) of municipal lands to advanced electric landscape maintenance equipment and manual tools.”

By transitioning to electric and manual tools, reports Quiet Communities, the city is:

[E]liminating toxic and carcinogenic emissions, greenhouse gas emissions, and hazardous waste associated with the use of gas-powered engines including hydrocarbons and nitrogen oxides (ground level ozone precursors) fine particulate matter, carbon monoxide (CO), and carbon dioxide.  All are known to contribute to serious health problems and environmental degradation.  Schools, businesses, and parks can be enjoyed as peaceful public spaces.  The new equipment will improve working conditions for grounds crews who will no longer have to expose themselves to deafening noise, harmful emissions, or equipment vibrations.  Residents will enjoy a cleaner, healthier environment and improved quality of life.

Quiet Communities is bringing AGZA Green Zones to the East Coast.  To learn more about creating an AGZA Green Zone, click the link above or contact Quiet Communities at: info@quietcommunities.org.