wow. Good to know about this. When I hear a white noise sound such as hairdryer, a cooling fan or vacuum,even car tires wooshing on the road,then all other sound is canceled out  and I cant hear anything at all. therefore my<br> hearingaids filter that white noise sound so I can actualy hear normal sound, I didnt hear the newfangled sound until i turned them off. Now I,m not working construchtion in London. I think the new sound is way to similar to the sound of airbrakes or hydrolics  working. No it sounds axactly like an heavyduty concretepump. Keep the beep. Remember on alot of construction sites earprotection is mandetory. The new sound would be alot harder to recognise than the well known beep. Keep the beep.