Boston Acoustics vrs pro Guia Do Utilizador

3

Diffuse Sound

In a movie theater, a diffuse surround sound

field is created by using an array of surround

speakers around the sides and rear of the 

theater. Since this is not practical in the home,

a diffuse-field speaker achieves the same effect

with a single pair of speakers.

When a conventional direct-radiating speaker

is used for surround, sound is aimed directly at

the listener. Because the listener can localize

the sound, the surround effect is spoiled (above

right).

The VRS Pro contains a pair of high-frequency

drivers, operating with opposite polarities—

one speaker pushes out and the other pulls in.

This directs most of the sound sideways (right).

The VRS Pro generates a “figure 8” pattern

above 350Hz, along the walls of the room. The

sound is then reflected from the end walls, ceil-

ing and floor before returning to the listener as

diffuse sound, which comes from all around the

listener.