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학술지 An Audio Quality Evaluation of Commercial Digital Radio Systems
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저자
이세원, 이용태, 서정일, 백명선, 임채헌, 박호종
발행일
201109
출처
IEEE Transactions on Broadcasting, v.57 no.3, pp.629-635
ISSN
0018-9316
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TBC.2011.2152910
초록
In this paper, the subjective audio quality of various digital radio systems is evaluated. In order to estimate the true audio quality of a commercial digital radio service, test audio signals were acquired directly from the digital radio equipment in the field. Twenty-one subjects participated in the test after pre-screening. The evaluation process consisted of two phases. In the first phase, the audio quality of each system was evaluated as a function of the bit rates, and the relationship between the audio quality and the channel capacity of each system was obtained. In order to confirm the evaluation consistency, in the second phase, the audio quality as a function of the systems was evaluated. Assuming that the digital radio equipment tested in this paper is used for service, these evaluation results provide the true audio quality of commercial digital radio services for various types of systems and bit rates, and can be used as a reference to determine the optimal channel capacity of digital radio service for a given target audio quality. © 2010 IEEE.
KSP 제안 키워드
Audio signal, Channel capacity, Digital radio, Evaluation Process, Second phase, Two-phase, audio quality evaluation, pre-screening, radio system