That's fine. The occasional boom, assuming business success this time, will last a few seconds. Leaf blowers last for hours in some neighborhoods.
It's not the hearing damage, it's the psychological stress.
The initial boom is less than a second but it's like standing right next to the leafblower (not across the street) and is accompanied a lasting thundering-noise which is also extremely loud.
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The initial boom is less than a second but it's like standing right next to the leafblower (not across the street) and is accompanied a lasting thundering-noise which is also extremely loud.