- Source: Speechbot
SpeechBot was a web search engine for streaming media content developed at Compaq's (later HP) research laboratories in Cambridge, MA and Australia. Compaq launched the website at Streaming Media West 1999 in San Jose, CA. The internet radio shows indexed by SpeechBot included The Motley Fool, Fresh Air, Talk of the Nation, The Dr. Laura Program, and Dreamland with Art Bell. By June 2003, the service had indexed over 17,000 hours of multimedia content. The website was taken offline in 2005, after HP closed their Cambridge research lab.
The SpeechBot indexing workflow involved a farm of Windows workstations that retrieved the streaming content; and a Linux cluster running speech recognition to transcribe the spoken audio. The web server, search index and metadata library were hosted on AlphaServers running Tru64 UNIX.
If transcripts were already available, then these were aligned to the audio stream; otherwise, an approximate transcript was produced using speech recognition. The Calista recognizer that was used was derived from Sphinx-3. Due to the low quality of streaming audio at the time, the word error rate was quite high, but most searches were still able to retrieve relevant hits. The search results linked to the offset in the stream that corresponded to the search phrase, so that users did not need to listen to the entire program to find the section of interest.
References
Further reading
Swain, Michael J. (March 1999). "Searching for Multimedia on the World Wide Web" (PDF). Compaq Technical Report. CRL 99/1. Archived from the original on October 31, 2005.{{cite journal}}: CS1 maint: unfit URL (link)
Eberman, B.; Fidler, B.; Iannucci, R.A.; Joerg, C.; Kontothanassis, L.; Kovalcin, D.E.; Moreno, P.; Swain, M.J.; Van Thong, J-M (March 1999). "Indexing Multimedia for the Internet". Compaq Technical Report. CRL 99/2. Archived from the original on March 20, 2006.{{cite journal}}: CS1 maint: unfit URL (link)
Dufaux, F.; Eberman, B.; Kontothanassis, L.; Moreno, P.; Swain, M.; Weikart, C. (March 1999). "A system for indexing web multimedia". Compaq Technical Report. CRL 99/3.
Kontothanassis, Leonidas; Joerg, Chris; Swain, Michael J.; Eberman, Brian; Iannucci, Robert A. (August 1999). "Design Implementation and Analysis of a Multimedia Indexing and Delivery Server". Compaq Technical Report. CRL 99/5. Archived from the original on March 20, 2006.{{cite journal}}: CS1 maint: unfit URL (link)
Moreno, P.J.; Van Thong, J.-M.; Logan, B.; Jones, G.J.F. (1 January 2002). "From multimedia retrieval to knowledge management". Computer. 35 (4): 58–66. doi:10.1109/MC.2002.993772.
Van Thong, J.-M.; Moreno, P.J.; Logan, B.; Fidler, B.; Maffey, K.; Moores, M. (March 2002). "Speechbot: an experimental speech-based search engine for multimedia content on the web" (PDF). IEEE Transactions on Multimedia. 4 (1): 88–96. doi:10.1109/6046.985557.
Logan, Beth; Goddeau, Dave; Van Thong, Jean-Manuel (March 2005). "Real-World Audio Indexing Systems". Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005. Vol. 5. pp. 1001–1004. doi:10.1109/ICASSP.2005.1416475. ISBN 0-7803-8874-7. S2CID 30576691. {{cite book}}: |journal= ignored (help)
Olsen, Stefanie (27 May 2004). "Search engines try to find their sound". CNET News. Retrieved 18 June 2012.
