US 12,236,967 B2
Audio coding method and apparatus
Erik Norvell, Stockholm (SE); and Volodya Grancharov, Solna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Dec. 20, 2019, as Appl. No. 16/722,569.
Application 16/722,569 is a continuation of application No. 16/167,831, filed on Oct. 23, 2018, granted, now 10,553,227.
Application 16/167,831 is a continuation of application No. 15/655,252, filed on Jul. 20, 2017, granted, now 10,147,435, issued on Dec. 4, 2018.
Application 15/655,252 is a continuation of application No. 14/440,700, granted, now 9,741,349, issued on Aug. 22, 2017, previously published as PCT/EP2015/055306, filed on Mar. 13, 2015.
Claims priority of provisional application 61/953,331, filed on Mar. 14, 2014.
Prior Publication US 2020/0126573 A1, Apr. 23, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 19/002 (2013.01); G10L 19/02 (2013.01); G10L 19/028 (2013.01); G10L 19/038 (2013.01); G10L 25/51 (2013.01); G10L 19/18 (2013.01); G10L 25/06 (2013.01); G10L 25/18 (2013.01); G10L 25/21 (2013.01); H04L 12/70 (2013.01)
CPC G10L 19/028 (2013.01) [G10L 19/0204 (2013.01); G10L 19/038 (2013.01); G10L 25/51 (2013.01); G10L 19/002 (2013.01); G10L 19/02 (2013.01); G10L 19/18 (2013.01); G10L 25/06 (2013.01); G10L 25/18 (2013.01); G10L 25/21 (2013.01); H04L 2012/5632 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for encoding an audio signal, the method comprising:
encoding spectral peak segments in a first region of a frequency spectrum of the audio signal using a first coding method;
responsive to encoding the spectral peak segments in the first region, determining whether an available number of bits out of a total number of bits for encoding the audio signal is sufficient for encoding a band in a second region of the frequency spectrum of the audio signal using a second coding method different from the first coding method;
determining a first relation between an energy of the band in the second region and energies of spectral peaks in the first region;
determining a second relation between the energy of the band in the second region and an average energy of the second region; and
responsive to determining the available number of bits is sufficient for encoding the band in the second region and determining the first and second relations fulfil a predetermined criterion, encoding the band in the second region using the second coding method.