By Eric K. Ringger
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Extra info for Robust Speech Recognation and Understanding
Sample text
These results also indicate the importance of speech detection in speaker-clustering procedures. Figure 8. Overall speaker-tracking results plotted with DET curves. Lower DET values correspond to better performance. The overall performance of the evaluated speaker-diarisation (SD) system is depicted in Figure 8, where the overall speaker-tracking results are shown.
It is referred to as the EN-phones recognizer in all our experiments. Both phoneme recognizers were constructed from the HMMs of monophone units joined in a fully connected network. , 2004). The phoneme sets of each language were different. In the SI-phones recognizer, 38 monophone base units were used, while in the TIMIT case, the base units were reduced to 48 monophones, according to (Lee & Hon, 1989). In both recognizers we used bigram phoneme language models in the recognition process. The recognizers were also tested on parts of the training databases.
In both cases they used these features for speech/music classification, but the idea could be easily extended to the detection of speech and non-speech signals, in general. The basic motivation in both cases was to obtain and use features that were more robust to different kinds of music data and at the same time perform well on speech data. , 2006a). In this way we also examined the behaviour of a phoneme recognizer, but the functioning of the recognizer was measured at the output of the recognizer rather than in the inner states of such a recognition engine.