1.   But the built-in loudspeakers are usually feeble and squawky, suitable for speech but hopeless when it comes to music, movie sound or sophisticated video games.

2.   Large, monolithic loudspeakers are intrusive to any eye but those of an audio zealot.

3.   Since there is no loudspeaker involved, an entire household is not privy to every message, and separate mailboxes can be established for each person.

4.   Many victims wait until severe symtoms of the disease appear, making treatment more difficult, said Dukuly, adding that loudspeakers were now being used to educate residents.