EP 2104095 A4 20120718 - A METHOD AND AN APPARATUS FOR ADJUSTING QUANTIZATION QUALITY IN ENCODER AND DECODER
Title (en)
A METHOD AND AN APPARATUS FOR ADJUSTING QUANTIZATION QUALITY IN ENCODER AND DECODER
Title (de)
VERFAHREN UND VORRICHTUNG ZUR EINSTELLUNG DER QUANTISIERUNGSQUALITÄT IN EINEM CODIERER UND DECODIERER
Title (fr)
PROCÉDÉ ET APPAREIL PERMETTANT D'AJUSTER LA QUALITÉ DE LA QUANTIFICATION DANS UN CODEUR ET DÉCODEUR
Publication
Application
Priority
- CN 2007003799 W 20071226
- CN 200610164330 A 20061201
Abstract (en)
[origin: EP2104095A1] A method for adjusting quality of quantization for encoding is disclosed according to embodiments of the present invention. The method includes adjusting a first group of sample values for encoding with at least two scale factors; quantizing the adjusted first group of sample values to obtain quantized sample values; eliminating the impact of the scale factors from the quantized sample values to obtain a second group of sample values; obtaining a global gain with the first group of sample values and the second group of sample values; outputting the quantized sample values, information of the at least two scale factors and the obtained global gain as an encoding stream. Embodiments of the present invention further disclose a method for adjusting quality of quantization for decoding, and apparatuses for adjusting quality of quantization for encoding and decoding. The methods and apparatuses disclosed by the present invention may greatly reduce the implementation complexity and may well adjust the quality of quantization at critical bands so that a better encoding performance may be achieved.
IPC 8 full level
G10L 19/00 (2006.01); G10L 19/02 (2006.01); G10L 19/032 (2013.01)
CPC (source: EP)
G10L 19/032 (2013.01)
Citation (search report)
- [XAYI] US 2006074693 A1 20060406 - YAMASHITA HIROAKI [JP]
- [XI] US 2004143431 A1 20040722 - HSU CHIEN-HUA [TW]
- [Y] WO 9614695 A1 19960517 - PHILIPS ELECTRONICS NV [NL], et al
- [Y] US 2005254586 A1 20051117 - KIM JUNGHOE [KR], et al
- [A] US 5864802 A 19990126 - KIM DO-HYUNG [KR], et al
- [L] US 6912496 B1 20050628 - BHATTACHARYA PURANJOY [IN], et al
- [L] HANSEN J H L ET AL: "Use of objective speech quality measures in selecting effective spectral estimation techniques for speech enhancement", 19890814; 19890814 - 19890816, 14 August 1989 (1989-08-14), pages 105 - 108, XP010090133
- See references of WO 2008064577A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2104095 A1 20090923; EP 2104095 A4 20120718; CN 101192410 A 20080604; CN 101192410 B 20100519; WO 2008064577 A1 20080605; WO 2008064577 A8 20090507
DOCDB simple family (application)
EP 07855801 A 20071226; CN 200610164330 A 20061201; CN 2007003799 W 20071226