US 12,087,317 B2
Dialogue enhancement in audio codec
Stanislaw Gorlow, Stockholm (SE); Leif Jonas Samuelsson, Sundbyberg (SE); Holger Hoerich, Fuerth (DE); and Tobias Friedrich, Fürth (DE)
Assigned to DOLBY INTERNATIONAL AB, Dublin (IE)
Appl. No. 17/603,149
Filed by DOLBY INTERNATIONAL AB, Amsterdam Zuidoost (NL)
PCT Filed Apr. 15, 2020, PCT No. PCT/EP2020/060534
§ 371(c)(1), (2) Date Oct. 12, 2021,
PCT Pub. No. WO2020/212390, PCT Pub. Date Oct. 22, 2020.
Claims priority of provisional application 62/833,855, filed on Apr. 15, 2019.
Claims priority of provisional application 62/882,722, filed on Aug. 5, 2019.
Claims priority of application No. 19169218 (EP), filed on Apr. 15, 2019.
Prior Publication US 2022/0199101 A1, Jun. 23, 2022
Int. Cl. G10L 21/0308 (2013.01); G10L 19/008 (2013.01); H03G 5/16 (2006.01); H03G 9/18 (2006.01)
CPC G10L 21/0308 (2013.01) [G10L 19/008 (2013.01); H03G 5/165 (2013.01); H03G 9/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for dialogue enhancement of an audio signal, comprising:
receiving an encoded bit stream including the audio signal,
obtaining a set of time-varying parameters configured to estimate a dialogue component present in said audio signal,
estimating said dialogue component from said audio signal,
applying a compressor only to said estimated dialogue component, to generate a processed dialogue component,
applying a user-determined gain to the processed dialogue component, to provide an enhanced dialogue component, and
combining said enhanced dialogue component with said audio signal to form a dialogue-enhanced audio signal, wherein combining the enhanced dialogue component with the audio signal includes forming a non-dialogue component by subtracting the estimated dialogue component from the audio signal, and summing said non-dialogue component with said enhanced dialogue component.