TDT2 English Audio
|Item Name:||TDT2 English Audio|
|LDC Catalog No.:||LDC99S84|
|Data Source(s):||broadcast news|
|Project(s):||TIDES, TDT, GALE, EARS|
|Application(s):||topic detection and tracking, speech recognition|
LDC User Agreement for Non-Members
|Online Documentation:||LDC99S84 Documents|
|Licensing Instructions:||Subscription & Standard Members, and Non-Members|
|Citation:||Graff, David. TDT2 English Audio LDC99S84. Web Download. Philadelphia: Linguistic Data Consortium, 1999.|
- 1999 Commercial Members: $0
- 1999 Non-Profit Members: $1460
- Non-Members: $14,600
Topic Detection and Tracking (TDT) refers to automatic techniques for finding topically related material in streams of data such as newswire and broadcast news. The TDT2 corpus was created to support three TDT2 tasks: find topically homogeneous sections (segmentation), detect the occurrrence of new events (detection), and track the reoccurrencce of old or new events (tracking).
The TDT2 Audio Corpus contains a total of 1,036 waveform files. Each file is a complete single-channel recording of 30- or 60-minute broadcast, which has been digitized at a sample rate of 16 KHz using 16-bit samples.
The four broadcast sources represented in the corpus with their format and programning frequency are as follows:
ABC World News Tonight -- "traditional" network news, 30 minutes/day
CNN Headline News -- continuous news summaries, up to 4 30-minute samples/day
PRI The World -- "in-depth" radio news, 60 minutes/weekday
VOA -- varied 60-minute news programs, up to 2/day
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