CONTAMINANTES
Experts Say a bin Laden Impostor Could Fool a Lot of People: The government's assessment so far that it cannot be absolutely certain that the audiotape broadcast on Tuesday was recorded by Osama bin Laden does not surprise experts in the field of voice authentication.
The science of using computers and linguists to identify individuals by their speech has improved dramatically in the last several years, but still involves considerable guess work and speculation, the experts say.