David McAlpine: Is noise cancelling technology safe?

Noise cancelling devices are big business, and it’s no surprise with excess noise exposure linked not only to hearing loss but even increased risk of cardiovascular disease and depressive symptoms. 

But it turns out too much noise reduction comes with its own warnings. Multiple studies have shown that constant earplug wearing, day and night, over just one week is enough to result in new-onset tinnitus.  

Professor David McAlpine, is the academic director of Macquarie University Hearing. He joins Jim Mora to discuss the pros and cons of noise cancelling technology.