DATA COLLECTION AND EVALUATION OF AURORA-2 JAPANESE CORPUS
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Speech recognition systems must still be improved when they are exposed to noisy environments. For this improvement, develop- ments of the standard evaluation corpus and assessment technolo- gies are essential. Recently the AURORA-2,3 corpus and their evaluation scenarios have had significant impacts on noisy speech recognition research. This paper introduces a Japanese noisy speech corpus and its evaluation scripts, called AURORA-2J. The AURORA-2J is a Japanese connected digits corpus. The data col- lection and evaluation scenarios are designed in the same way as AURORA-2 with the help of ETSI AURORA group. Furthermore, we have collected in-car speech corpus similar to AURORA-3. The in-car speech corpus includes Japanese connected digits and command words collected in a moving car. This paper describes the data collection, baseline scripts, and its baseline performance.