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K. Choo, A. Porov, and E. Oh, "Blind Bandwidth Extension System Utilizing Advanced Spectral Envelope Predictor," Paper 9262, (2015 May.). doi: K. Choo, A. Porov, and E. Oh, "Blind Bandwidth Extension System Utilizing Advanced Spectral Envelope Predictor," Paper 9262, (2015 May.). doi:
Abstract: We propose a blind bandwidth extension (BWE) technique that improves the quality of a narrow-band speech signal using time domain extension and spectral envelope prediction in the frequency domain. In the time domain, we use a spectral double shifting method. Further, a new spectral envelope predictor is introduced in the frequency domain. We observe less distortion when the attribute is transferred from low to high frequency, instead of reflecting the original high band. The proposed blind BWE system is applied to the decoded output of an adaptive multi-rate (AMR) codec at 12.2 kbps to generate a high-frequency spectrum from 4 to 8 kHz. The blind BWE was objectively evaluated with the AMR and AMR wideband codecs and subjectively evaluated by comparing it with the AMR.

@article{choo2015blind,
author={choo, kihyun and porov, anton and oh, eunmi},
journal={journal of the audio engineering society},
title={blind bandwidth extension system utilizing advanced spectral envelope predictor},
year={2015},
volume={},
number={},
pages={},
doi={},
month={may},} @article{choo2015blind,
author={choo, kihyun and porov, anton and oh, eunmi},
journal={journal of the audio engineering society},
title={blind bandwidth extension system utilizing advanced spectral envelope predictor},
year={2015},
volume={},
number={},
pages={},
doi={},
month={may},
abstract={we propose a blind bandwidth extension (bwe) technique that improves the quality of a narrow-band speech signal using time domain extension and spectral envelope prediction in the frequency domain. in the time domain, we use a spectral double shifting method. further, a new spectral envelope predictor is introduced in the frequency domain. we observe less distortion when the attribute is transferred from low to high frequency, instead of reflecting the original high band. the proposed blind bwe system is applied to the decoded output of an adaptive multi-rate (amr) codec at 12.2 kbps to generate a high-frequency spectrum from 4 to 8 khz. the blind bwe was objectively evaluated with the amr and amr wideband codecs and subjectively evaluated by comparing it with the amr.},}

TY - paper
TI - Blind Bandwidth Extension System Utilizing Advanced Spectral Envelope Predictor
SP - EP -
AU - Choo, Kihyun
AU - Porov, Anton
AU - Oh, Eunmi
PY - 2015
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2015 TY - paper
TI - Blind Bandwidth Extension System Utilizing Advanced Spectral Envelope Predictor
SP - EP -
AU - Choo, Kihyun
AU - Porov, Anton
AU - Oh, Eunmi
PY - 2015
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2015
AB - We propose a blind bandwidth extension (BWE) technique that improves the quality of a narrow-band speech signal using time domain extension and spectral envelope prediction in the frequency domain. In the time domain, we use a spectral double shifting method. Further, a new spectral envelope predictor is introduced in the frequency domain. We observe less distortion when the attribute is transferred from low to high frequency, instead of reflecting the original high band. The proposed blind BWE system is applied to the decoded output of an adaptive multi-rate (AMR) codec at 12.2 kbps to generate a high-frequency spectrum from 4 to 8 kHz. The blind BWE was objectively evaluated with the AMR and AMR wideband codecs and subjectively evaluated by comparing it with the AMR.