US 9,812,139 B2
Method, terminal, system for audio encoding/decoding/codec
Guoming Chen, Shenzhen (CN); Yuanjiang Peng, Shenzhen (CN); Wenjun Ou, Shenzhen (CN); and Hong Liu, Shenzhen (CN)
Assigned to TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Shenzhen (CN)
Filed by TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Shenzhen (CN)
Filed on Jan. 14, 2015, as Appl. No. 14/596,753.
Application 14/596,753 is a continuation of application No. PCT/CN2014/082888, filed on Jul. 24, 2014.
Claims priority of application No. 2013 1 0364530 (CN), filed on Aug. 20, 2013.
Prior Publication US 2015/0127356 A1, May 7, 2015
Int. Cl. G10L 21/00 (2013.01); G10L 25/93 (2013.01); G10L 19/00 (2013.01); H04H 20/47 (2008.01); H04H 20/88 (2008.01); G10L 19/02 (2013.01); G10L 19/032 (2013.01); G10L 25/21 (2013.01); G10L 25/09 (2013.01)
CPC G10L 19/02 (2013.01) [G10L 19/032 (2013.01); G10L 25/09 (2013.01); G10L 25/21 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An audio encoding method, comprising:
obtaining a plurality of audio signals that are continuous;
determining a type of each audio signal of the plurality of audio signals, according to an audio parameter of each audio signal, wherein the type of each audio signal is one of a designated signal type, a voice signal type, and a mute signal type; and
obtaining a marked audio encoding stream by performing a marking to each audio signal as having or not having the designated signal type, wherein the marking is used at a decoding terminal to perform an enhancement-process to one or more audio signals having the designated signal type, wherein the enhancement-process is not performed to audio signals that do not have the designated signal type,
wherein the designated signal type is an analogous audio signal, and the step of determining the type of each audio signal comprises:
obtaining the audio parameter of each audio signal, wherein the audio parameter comprises logarithmic energy, a high-zero-crossing-rate-ratio (HZCRR), and a spectral flux (SF);
determining that an audio signal is the mute signal type, when the logarithmic energy of the audio signal is less than a first threshold value;
determining that an audio signal is the voice signal type, when the logarithmic energy of the audio signal is no less than the first threshold value, and the HZCRR is more than a second threshold value; and
determining that an audio signal is the designated signal type, when the logarithmic energy of the audio signal is no less than the first threshold value, the HZCRR is no more than the second threshold value, and the spectral flux is more than a third threshold value.