EP 1979901 B1 20151014 - METHOD AND ARRANGEMENTS FOR AUDIO SIGNAL ENCODING
Title (en)
METHOD AND ARRANGEMENTS FOR AUDIO SIGNAL ENCODING
Title (de)
VERFAHREN UND ANORDNUNGEN ZUR AUDIOSIGNALKODIERUNG
Title (fr)
PROCEDE ET DISPOSITIFS POUR LE CODAGE DE SIGNAUX AUDIO
Publication
Application
Priority
EP 2006000812 W 20060131
Abstract (en)
[origin: WO2007087824A1] To form an audio signal (SAS), frequency components (NAS) of the audio signal which are allotted to a first subband are formed by means of a subband decoder (LBD) using supplied fundamental period values (?LTP) which respectively indicate a fundamental period for the audio signal. Frequency components (HAS) of the audio signal which are allotted to a second subband are formed by exciting an audio synthesis filter (ASYN) using an excitation signal (u(k)) which is specific to the second subband. To produce this excitation signal (u(k)), an excitation signal generator (HBG) derives a fundamental period parameter (?p) from the fundamental period values (?LTP). The fundamental period parameter (?p) is used by the excitation signal generator (HBG) to form pulses with a pulse shape which is dependent on the fundamental period parameter (?p) at an interval of time which is determined by the fundamental period parameter (?p) and to mix them with a noise signal.
IPC 8 full level
G10L 19/02 (2013.01); G10L 21/038 (2013.01)
CPC (source: EP US)
G10L 19/0208 (2013.01 - EP US); G10L 21/038 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 2007087824 A1 20070809; CN 101336451 A 20081231; CN 101336451 B 20120905; EP 1979901 A1 20081015; EP 1979901 B1 20151014; US 2009024399 A1 20090122; US 8612216 B2 20131217
DOCDB simple family (application)
EP 2006000812 W 20060131; CN 200680052128 A 20060131; EP 06706508 A 20060131; US 22336206 A 20060131