For those that are new to the world of intercom, here are some terms you don't want to confuse with each other: Analog vs. Digital     Encore Analog Partyline HelixNet Digital Partyline Analog systems record waveforms as they are. Digital systems will convert the analog waveforms into sets of numbers and record the numbers instead. When played back, the numbers are converted into a voltage stream that approximates the original analog wave. Two-wire vs. Four-wire Four-wire ...

Clear-Com’s Eclipse-PiCo digital matrix and Encore partyline intercom...

The medical education program at Dalhousie University...

Before purchasing your next cellphone, read CNET's review of the best mobile phones of the year to make the best decision. Learn which ones are top-notched and what puts them on the list of the top five: Best Cell Phones

What does silence sound like? Well, Simon and Garfunkel wrote and sang a song about that. The song "The Sound of Silence" was featured on the album "Wednesday Morning, 3 am" and talks about man's lack of communication with his fellow man. It took Paul Simon half a year to write the lyrics. Although the album tanked initially, that song was reworked and eventually became a number one hit.