Title:
オーディオ信号用の位相ボコーダに基づく帯域幅拡張方法における改善された振幅応答及び時間的整列のための装置及び方法
Document Type and Number:
Japanese Patent JP5854520
Kind Code:
B2
Abstract:
An apparatus for generating a bandwidth extended audio signal from an input signal, includes a patch generator for generating one or more patch signals from the input signal, wherein the patch generator is configured for performing a time stretching of subband signals from an analysis filterbank, and wherein the patch generator further includes a phase adjuster for adjusting phases of the subband signals using a filterbank-channel dependent phase correction.
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Inventors:
Dish the sha
Nagel Frederik
Virde stephan
Willemace Larche
EXstrand Pale
Nagel Frederik
Virde stephan
Willemace Larche
EXstrand Pale
Application Number:
JP2012556460A
Publication Date:
February 09, 2016
Filing Date:
March 04, 2011
Export Citation:
Assignee:
Fraunhofer Gesell Shaft Tool Forderung Del Angewanten Forschung A. Far.
International Classes:
G10L21/0388; G10L19/00; G10L21/038
Domestic Patent References:
| JP2005173607A |
Foreign References:
| WO2006075663A1 |
Other References:
Frederik NAGEL, et al.,"A HARMONIC BANDWIDTH EXTENSION METHOD FOR AUDIO CODECS",Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing(ICASSP 2009),2009年 4月,pp.145-148
Jean LAROCHE, et al.,"Improved Phase Vocoder Time-Scale Modification of Audio",IEEE Transactions on Speech and Audio Processing,1999年 5月,Vol.7, No.3,pp.323-332
Jean LAROCHE, et al.,"Improved Phase Vocoder Time-Scale Modification of Audio",IEEE Transactions on Speech and Audio Processing,1999年 5月,Vol.7, No.3,pp.323-332
Attorney, Agent or Firm:
Hidetoshi Ueba
Takao Matsuyama
Go Sakane
Kawakami Keiko
Takao Matsuyama
Go Sakane
Kawakami Keiko