Students invent quieter leaf blower

First, it's an attachment that could fit on nearly all blowers.

Second, it dampens the noise while retaining all the force.

If this works out, it will be amazing! Kudos to the student teams!

Patented and licensed, so not coming to a neighborhood near you unless mandated by local government. Because while people want their neighbors to use it, in enough cases they won't pay the extra and rationalize it somehow.

You wouldn't download a quieter leaf-blower...

unless of course you had a 3D printer

Minor nitpick about the reporting:

> The team reduced the overall leaf blower noise by about two decibels, making the machine sound 37% quieter.

While a 2 dB reduction in noise does represent a 37% reduction in acoustic power, our perception of sound is logarithmic so this is extremely unlikely to "sound 37% quieter"-- Assuming the reduction is from 50 dB to 48 dB, it will sound about 4% quieter.

Much more significant is the 12 dB reduction in the "shrill and annoying" frequency range. While the 94% reduction there is probably also overstated for the same reason, the initial power level in that range will be only a portion of the overall noise output-- I wouldn't be surprised if there's a 50-75% perceived reduction of noise in this range.

HOAs that hire landscapers are a good market segment for this imo. Also, large commercial properties.