YES! Love this
Engineering students at Johns Hopkins have created a silencer module for the campus leaf blowers, reducing the overall noise pollution of the devices by 37%, while they succeeded in almost completely removing the high-pitched whining that annoyed them the most.
It’s not uncommon for leaf blowers to be banned by homeowners associations or for apartment tenants to complain about their endless, up-and-down revving and worse, landscapers often use them in the early morning to avoid the heat of the day.
The design is patent-pending and Stanley Black & Decker, who sponsored the students, expects to be selling them in two years.