The 18th century heralded the industrial revolution. Now the effects of mechanical noise became apparent as factory workers suffered damage to their hearing. But even city dwellers who did not live near factories complained of increasing disturbance.
लेकिन कारख़ानों से दूर, शहर में रहनेवालों ने भी बढ़ती परेशानी की शिकायत की ।