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Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec

Abstract: 

This presentation describes the bandwidth extension (BWE) method developed for the AMR-WB interoperable (AMR-WB IO) modes of the 3GPP EVS codec. The low-band signal (0-6.4 kHz) is coded using an enhanced version of ACELP as in AMR-WB and post-processed; the high-band (above 6.4 kHz) in contrast to AMR-WB is represented with a new BWE method. The decoded low-band excitation is adaptively extended to high frequencies and filtered in the DCT domain. The extended excitation is scaled by subframe gains and shaped by a weighted LPC synthesis filter. Test results show that the AMR-WB IO BWE contributes to the performance advantage of EVS AMR-WB IO over the original AMR-WB, with limited complexity increase and no extra delay.

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Paper Details

Authors:
Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs
Submitted On:
23 February 2016 - 1:44pm
Short Link:
Type:
Presentation Slides
Event:
Presenter's Name:
Vaclav Eksler
Document Year:
2015
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Document Files

EVS_AMR_WB_IO_BWE_GlobalSIP2015.ppt

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[1] Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs, "Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec", IEEE SigPort, 2015. [Online]. Available: http://sigport.org/317. Accessed: Dec. 15, 2019.
@article{317-15,
url = {http://sigport.org/317},
author = {Magdalena Kaniewska; Stéphane Ragot; Zexin Liu; Lei Miao; Xingtao Zhang; Jon Gibbs },
publisher = {IEEE SigPort},
title = {Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec},
year = {2015} }
TY - EJOUR
T1 - Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec
AU - Magdalena Kaniewska; Stéphane Ragot; Zexin Liu; Lei Miao; Xingtao Zhang; Jon Gibbs
PY - 2015
PB - IEEE SigPort
UR - http://sigport.org/317
ER -
Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs. (2015). Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec. IEEE SigPort. http://sigport.org/317
Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs, 2015. Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec. Available at: http://sigport.org/317.
Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs. (2015). "Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec." Web.
1. Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs. Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec [Internet]. IEEE SigPort; 2015. Available from : http://sigport.org/317