Noise Reduction Testing

I am always willing to help with something that benefits the health and protection of other people.  In this experiment at Salford University Acoustics department I was subjected to loud white noise with and without the hearing protection used on board helicopters.

The test was to determine the attenuation of the noise when active noise reduction was applied to the helmet.

The noise reduction system seemed to affect the frequency content of the noise, filtering out a lot of the low end, which would be incredibly useful for avoiding the sound of spinning helicopter blades.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s