EP 2192577 B1 20111102 - Optimization of MP3 encoding with complete decoder compatibility
Title (en)
Optimization of MP3 encoding with complete decoder compatibility
Title (de)
Optimierung von MP3-Kodierung mit vollständiger Dekodiererkompatibilität
Title (fr)
Optimisation de codage MP3 avec compatibilité complète de décodeur
Publication
Application
Priority
EP 08170396 A 20081201
Abstract (en)
[origin: EP2192577A1] An iterative rate-distortion optimization algorithm for MPEG I/II Layer-3 (MP3) encoding based on the method of Lagrangian multipliers. Generally, an iterative method is performed such that a global quantization step size is determined while scale factors are fixed, and thereafter the scale factors are determined while the global quantization step size is fixed. This is repeated until a calculated rate-distortion cost is within a predetermined threshold. The methods are demonstrated to be computationally efficient and the resulting bit stream is fully standard compatible.
IPC 8 full level
G10L 19/02 (2006.01); G10L 19/035 (2013.01)
CPC (source: EP)
G10L 19/035 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2192577 A1 20100602; EP 2192577 B1 20111102; AT E532175 T1 20111115; CA 2686264 A1 20100601; CA 2686264 C 20150127
DOCDB simple family (application)
EP 08170396 A 20081201; AT 08170396 T 20081201; CA 2686264 A 20091124