Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005.
DOI: 10.1109/icassp.2005.1415236
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A Robust Narrowband to Wideband Extension System Featuring Enhanced Codebook Mapping

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Cited by 31 publications
(18 citation statements)
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“…Many efforts have been devoted to artificially generate WB speech from the NB speech. Conventional extension approaches [1,2,3] exploit the mutual dependence between NB and highband (HB) to estimate the missing HB signal from the NB signal. The estimated HB components are then used along with the NB speech to reconstruct a wideband (WB) speech.…”
Section: Introductionmentioning
confidence: 99%
“…Many efforts have been devoted to artificially generate WB speech from the NB speech. Conventional extension approaches [1,2,3] exploit the mutual dependence between NB and highband (HB) to estimate the missing HB signal from the NB signal. The estimated HB components are then used along with the NB speech to reconstruct a wideband (WB) speech.…”
Section: Introductionmentioning
confidence: 99%
“…Here our attention focuses on the estimation efficiency of the intended approach rather than the appropriateness of the selected parameters. Hence no other parameters are included in the input vector, despite that the inclusion of additional acoustic features was known to be beneficial to the parameter estimation [3], [4]. In [3], a HMM was utilized to estimate the highband parameters.…”
Section: Hmm-based Approachmentioning
confidence: 99%
“…However, such an idea appears impractical due to the amount of legacy networks already installed. Fortunately, the missing bandwidth can still be partially recovered from narrowband speech via signal processing techniques [1]- [4].…”
Section: Introductionmentioning
confidence: 99%
“…However, it is difficult to change the current speech transmission infrastructure to provide a wider bandwidth due to economic considerations. An alternate method is to artificially, instead of virtually, extend the speech bandwidth [2,3]. More specifically, the missing high band (HB) components are estimated from the NB speech by exploiting their mutual dependencies.…”
Section: Introductionmentioning
confidence: 99%