지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The decision directed (DD) approach is widely used to determine a priori SNR from noisy speech signals. In conventional speech enhancement systems with a DD approach, a priori SNR is estimated by using only the magnitude components and consequently follows a posteriori SNR with one frame delay. We propose a phase-dependent two-step a priori SNR estimator based on the minimum mean square error (MMSE) in the log-mel spectral domain so that we can consider both magnitude and phase information, and it can overcome the performance degradation caused by one frame delay. From the experimental results, the proposed estimator is shown to improve the output SNR of enhanced speech signals by 2.3 ㏈ compared to the conventional DD approach-based system.
목차
ABSTRACT
1. 서론
2. 신호 모델링
3. 위상 기반 음성 향상 알고리듬
4. 실험 결과
5. 결론
참고문헌
참고문헌 (8)
참고문헌 신청
1. [학술지(정기간행물)] - Ephraim, Y / 1984 / Speech enhancement using a minimum mean-square error short-time spectral amplitude estimator / IEEE Trans. Acoustics, Speech and Signal Processing 32 : 1109 ~ 1121
2. [단행본] - Loizou, P. C / 2007 / Speech Enhancement / CRC Pr I Llc : 97 ~ 289
3. [학술대회논문] - Alam, M. J / 2008 / Speech enhancement based on novel two-step a priori SNR estimators / Proc. Interspeech : 565 ~ 568
4. [학술대회논문] - Faubel, F / 2008 / A phaseaveraged model for the relationship between noisy speech, clean speech and noise in the log-mel domain / Proc. Interspeech : 553 ~ 556
5. [학술대회논문] - Paliwal, K. K / 2003 / Usefulness of phase in speech processing / Proc. IPSJ Spoken Language Processing Workshop, Gifu, Japan : 1 ~ 6
2. [단행본] - Loizou, P. C / 2007 / Speech Enhancement / CRC Pr I Llc : 97 ~ 289
3. [학술대회논문] - Alam, M. J / 2008 / Speech enhancement based on novel two-step a priori SNR estimators / Proc. Interspeech : 565 ~ 568
4. [학술대회논문] - Faubel, F / 2008 / A phaseaveraged model for the relationship between noisy speech, clean speech and noise in the log-mel domain / Proc. Interspeech : 553 ~ 556
5. [학술대회논문] - Paliwal, K. K / 2003 / Usefulness of phase in speech processing / Proc. IPSJ Spoken Language Processing Workshop, Gifu, Japan : 1 ~ 6
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UCI(KEPA) : I410-ECN-0101-2012-701-004179421