US 12,014,747 B2
Audio encoder for encoding an audio signal, method for encoding an audio signal and computer program under consideration of a detected peak spectral region in an upper frequency band
Markus Multrus, Nuremberg (DE); Christian Neukam, Kalchreuth (DE); Markus Schnell, Nuremberg (DE); and Benjamin Schubert, Nuremberg (DE)
Assigned to FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed on Apr. 27, 2023, as Appl. No. 18/308,293.
Application 18/308,293 is a continuation of application No. 17/023,941, filed on Sep. 17, 2020, granted, now 11,682,409.
Application 17/023,941 is a continuation of application No. 16/143,716, filed on Sep. 27, 2018, granted, now 10,825,461.
Application 16/143,716 is a continuation of application No. PCT/EP2017/058238, filed on Apr. 6, 2017.
Claims priority of application No. 16164951 (EP), filed on Apr. 12, 2016.
Prior Publication US 2023/0290365 A1, Sep. 14, 2023
Int. Cl. G10L 19/26 (2013.01); G10L 19/02 (2013.01); G10L 19/028 (2013.01); G10L 19/03 (2013.01); G10L 19/032 (2013.01); G10L 19/04 (2013.01); G10L 19/12 (2013.01); G10L 19/16 (2013.01); G10L 21/007 (2013.01); G10L 21/02 (2013.01); G10L 21/0208 (2013.01); G10L 21/0324 (2013.01); G10L 21/038 (2013.01); G10L 25/15 (2013.01); G10L 25/18 (2013.01)
CPC G10L 19/265 (2013.01) [G10L 19/0204 (2013.01); G10L 19/03 (2013.01); G10L 19/032 (2013.01); G10L 19/12 (2013.01); G10L 19/16 (2013.01); G10L 19/26 (2013.01); G10L 21/007 (2013.01); G10L 21/02 (2013.01); G10L 21/0208 (2013.01); G10L 21/0324 (2013.01); G10L 25/15 (2013.01); G10L 25/18 (2013.01); G10L 19/02 (2013.01); G10L 19/028 (2013.01); G10L 19/04 (2013.01); G10L 21/038 (2013.01)] 20 Claims
OG exemplary drawing
 
19. Method for encoding an audio signal comprising a lower frequency band and an upper frequency band, comprising:
detecting a peak spectral region in the upper frequency band of the audio signal and a significant signal component in the lower frequency band; and
shaping the lower frequency band of the audio signal using shaping information for the lower frequency band and shaping the upper frequency band of the audio signal using at least a portion of the shaping information for the lower frequency band, wherein the shaping of the upper frequency band comprises an additional attenuation of a spectral value in the detected peak spectral region in the upper frequency band, when the significant signal component in the lower frequency band has been detected.