file directory
audio file	.\WAV\GroupID_ConversationID_0_SpeakerID.wav
annotation file	.\TXT\GroupID_ConversationID_0_SpeakerID.txt

txt file format
[start_time,end_time]	speaker_id	gender	transcript

symbol	description
[*]	unintelligible words or sentences, or a long passage of a foreign language
[+]	overlapping speech
[LAUGHTER]	laughter
[SONANT]	interference noises generated by the speaker's vocal system, such as cough, sneeze, and throat clearing
[MUSIC]	music, including humming
[SYSTEM]	all sorts of non-speech system sound, caused either by recording or telecommunication system
[ENS]	all sorts of ambient noises which is not included in the cases above, for instance, knocking, scratching, and animal sounds
[PII]	personally identifiable information