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A 1973 report cites a university study of fifty cases of people complaining about a "low throbbing background noise" that others were unable to hear. The sound, always peaking between 30 and 40 Hz (hertz), was found to only be heard during cool weather with a light breeze, and often early in the morning. These noises were often confined to a 10 ...
The torsional deflection of a simple cylinder cannot radiate efficiently acoustic noise, but with particular boundary conditions the stator can radiate acoustic noise under torque ripple excitation. [8] Structure-borne noise can also be generated by torque ripple when rotor shaft line vibrations propagate to the frame [9] and shaft line.
The sound may radiate to the upper sternal border on either side. [2] Though the exact mechanism is still unclear, it has been suggested that the hum occurs when otherwise silent laminar flow through the internal jugular vein is disturbed by deformation of this vessel at the level of the transverse process of the atlas during head rotation.
The 2011 Nissan Leaf was the first electric car equipped with Nissan's Vehicle Sound for Pedestrians called 'Canto'.. Electric vehicle warning sounds are sounds designed to alert pedestrians to the presence of electric drive vehicles such as hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and battery electric vehicles (BEVs) travelling at low speeds.
3. Traditional Wassail. Forget boring cider — wassail is the OG festive drink dating back to medieval England. Part of a tradition called “wassailing,” it was made to toast good health and ...
TOKYO (Reuters) -Japanese media powerhouse Kadokawa said on Wednesday it had received a letter of intent to buy its shares, a day after a Reuters report that Sony was in talks to acquire the ...
House Republicans are scrambling to find a way to avoid a government shutdown after their second funding proposal was rejected, and are now planning to vote on a third proposal soon.
Roadway noise is the collective sound energy emanating from motor vehicles. It consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements. Noise of rolling tires driving on pavement is found to be the biggest contributor of highway noise and increases with higher vehicle speeds. [1] [2] [3]