From 1992 until his election to the U.S. Senate in 2004, Barack Obama served as a professor in the Law School. He was a Lecturer from 1992 to 1996. He was a Senior Lecturer from 1996 to 2004, during which time he taught three courses per year.
Traditional speakers produce sound by using an electromagnet to move a flexible cone back and forth. They use drivers to help translate electrical signals into physical vibrations so that you can hear recorded sounds. A tweeter is the type of speaker driver that produces the highest range frequency. The other two main drivers are woofers and midrange. Basically, a driver moves a flexible cone, or diaphragm, back and forth very quickly to produce sound waves.
Noun. 1. whisperer-one who speaks in a whisper. speaker, talker, verbaliser, verbalizer, utterer-someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous); the speaker at commencement; an utterer of useful maxims.noun. day may come when this child who has not seen the light rules as king in Zululand, and then in reward you shall be the greatest of the people, the king's voice, whisperer in the king's ear.