Phonetically Balanced Text Corpus Design Using a Similarity Measure for a Stereo Super-Wideband Speech Database

Yoo Rhee OH  Yong Guk KIM  Mina KIM  Hong Kook KIM  Mi Suk LEE  Hyun Joo BAE  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E94-D   No.7   pp.1459-1466
Publication Date: 2011/07/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E94.D.1459
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Speech and Hearing
Keyword: 
text corpus design,  similarity measure,  phonetically balanced text,  super-wideband speech database,  

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Summary: 
In this paper, we propose a text corpus design method for a Korean stereo super-wideband speech database. Since a small-sized text corpus for speech coding is generally required for speech coding, the corpus should be designed to comply with the pronunciation behavior of natural conversation in order to ensure efficient speech quality tests. To this end, the proposed design method utilizes a similarity measure between the phoneme distribution occurring from natural conversation and that from the designed text corpus. In order to achieve this goal, we first collect and refine text data from textbooks and websites. Next, a corpus is designed from the refined text data based on the similarity measure to compare phoneme distributions. We then construct a Korean stereo super-wideband speech (K-SW) database using the designed text corpus, where the recording environment is set to meet the conditions defined by ITU-T. Finally, the subjective quality of the K-SW database is evaluated using an ITU-T super-wideband codec in order to demonstrate that the K-SW database is useful for developing and evaluating super-wideband codecs.