Abstract

This paper summarizes a recent progress in the development of the automatic transcription system for subtitling of the Slovak multi-genre audiovisual recordings, such as lectures, talks, discussions, broadcast news or TV/radio shows. The main concept is based on application of current and innovative principles and methods oriented towards speech and language processing, automatic speech segmentation, speech recognition, statistical modeling and adaptation of acoustic and language models to a specific topic, gender and speaking style of the speaker. We have developed a working prototype of automatic transcription system for the Slovak language, mainly designed for subtitling of various types of single- or multi-channel audiovisual recordings. Preliminary results show a significant decrease in word error rate relatively from 2.40% to 47.10% for an individual speaker in fully automatic transcription and subtitling of Slovak parliament speech, broadcast news or TEDx talks.

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