court reporter

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A stenographer who makes a verbatim record and transcription of court proceedings.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A person whose occupation is to transcribe spoken or recorded speech into written form, typically using a stenotype or stenomask to produce official transcripts of court hearings, depositions and other official proceedings.