EP 2267700 B1 20111221 - Apparatus and method for selecting quantisation bands in audio encoders
Title (en)
Apparatus and method for selecting quantisation bands in audio encoders
Title (de)
Vorrichtung und Verfahren zum Auswählen von Quantisierungsbändern in Audiokodierern
Title (fr)
Appareil et procédé de sélection de bandes de quantification dans des encodeurs audio
Publication
Application
Priority
EP 09008170 A 20090622
Abstract (en)
[origin: EP2267700A1] An apparatus for compressing an audio signal in which a processor implementing the compression algorithm conducts a binary, or bisection, search of a quantiser table in order to determine which quantised output value is most appropriate for a given input value. The processor is programmed to perform each iteration of the bisection search in three processor instructions by performing specific combinations of memory reads and computations during each instruction. The apparatus reduces power consumption and is particularly suited for use with Bluetooth transmission.
IPC 8 full level
G10L 19/02 (2006.01); G10L 19/032 (2013.01)
CPC (source: EP)
G10L 19/032 (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 MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2267700 A1 20101229; EP 2267700 B1 20111221; AT E538470 T1 20120115
DOCDB simple family (application)
EP 09008170 A 20090622; AT 09008170 T 20090622