Dragon Systems' DragonDictateŽ for Windows Version
1.0 (DDWin) large-vocabulary isolated-word dictation
system is available in several languages. This paper
reports on comparative recognition performance in five of
them: French (pre-release), German, Italian, Spanish, and
English. The tests are based on a variety of different
document styles, including a work of philosophy, a popular
novel, and a software user's manual. The results show
statistically significant differences between the languages,
with Italian being the easiest to recognize, and German and
French the hardest.
An error analysis shows the importance of vocabulary coverage in inflected languages, as English shows an out-of-vocabulary error rate of less than .5%, while the other four languages have rates above 2%. French showed a much higher rate of homophone errors than the other languages. However, recognition performance is uniformly better than that reported in a similar test in 1991.
Bibliographic reference. Barnett, James / Bamberg, Paul / Held, Martin / Huerta, Juan / Manganaro, Linda / Weiss, Adam (1995): "Comparative performance in large-vocabulary isolated-word recognition in five european languages", In EUROSPEECH-1995, 189-192.