I hope a neighbor's snoring would be closer to steady-state... - Phil
On 23:48, Winsor Crosby wrote:
>
>That is the idea, phase cancellation, but it does have limitations.
>About 10 db is all that any of them reduce the ambient noise with
>the electronic bit. Plus the ambient noise has to be steady state,
>like the roar on an air liner. Other non-steady state noises are not
>affected as much. So you hear things like your neighbor's music, the
>baby crying on the airplane, and pretty much everything except the
>white noise which you don't really notice after a while anyway. One
>advantage is that you can carry on a conversation with someone while
>listening to your music. In-the-ear phones with good seals can drop
>the outside sound level about 30 db. That saves your hearing from
>the noise and from not having to turn up the volume to hear the
>music, but you have to take them off to carry on a conversation.
>
>
>
>Winsor
==
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|