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This paper addresses a design issue of “model complexity and performance trade-off” in the application of bandwidth extension (BWE) methods to the intra-frame predictivevector quantization problem of wideband speech. It discusses model-based linear and non-linear prediction methods and presents a comparative study of them in terms of prediction gain. Through experimentation, the general trend of saturation in performance (with the increase in model complexity) is observed. However, specifically, it is also observed that there is no significant difference between HMM and GMM-based BWE functions.
목차
Abstract
1. Introduction
2. Intra-frame predictive VQ
3. Representative BWE functions
4. Performance evaluation
5. Conclusion
참고문헌
참고문헌 (9)
참고문헌 신청
1. [학술대회논문] - M. Nilsson / 2002 / Gaussian mixture model based mutual information between frequency bands in speech / ICASSP : 525 ~ 528
2. [학술지(정기간행물)] - Y. Agiomyrgiannakis / 2007 / Conditional vector quantization for speech coding / IEEE Trans. Audio, Speech, Lang. Process. 15 (2) : 377 ~ 386
3. [학술대회논문] - B. Geiser / 2007 / Backwards compatible wideband telephony in mobile networks: CELP watermarking and bandwidth extension / ICASSP : 533 ~ 536
4. [단행본] - P. Jax / 2004 / Bandwidth extension for speech In Audio Bandwidth Extension / John Wiley & Sons : 171 ~ 235
5. [학술대회논문] - K. -Y. Park / 2000 / Narrowband to wideband conversion of speech using GMM based transformation / ICASSP : 1843 ~ 1846
2. [학술지(정기간행물)] - Y. Agiomyrgiannakis / 2007 / Conditional vector quantization for speech coding / IEEE Trans. Audio, Speech, Lang. Process. 15 (2) : 377 ~ 386
3. [학술대회논문] - B. Geiser / 2007 / Backwards compatible wideband telephony in mobile networks: CELP watermarking and bandwidth extension / ICASSP : 533 ~ 536
4. [단행본] - P. Jax / 2004 / Bandwidth extension for speech In Audio Bandwidth Extension / John Wiley & Sons : 171 ~ 235
5. [학술대회논문] - K. -Y. Park / 2000 / Narrowband to wideband conversion of speech using GMM based transformation / ICASSP : 1843 ~ 1846
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