The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2014
Filed:
Oct. 26, 2010
Zhibin Lin, Nanjing, CN;
Zheng Deng, Nanjing, CN;
Hao Yuan, Shenzhen, CN;
Jing LU, Nanjing, CN;
Xiaojun Qiu, Nanjing, CN;
Jiali LI, Shenzhen, CN;
Guoming Chen, Shenzhen, CN;
KE Peng, Shenzhen, CN;
Kaiwen Liu, Shenzhen, CN;
Zhibin Lin, Nanjing, CN;
Zheng Deng, Nanjing, CN;
Hao Yuan, Shenzhen, CN;
Jing Lu, Nanjing, CN;
Xiaojun Qiu, Nanjing, CN;
Jiali Li, Shenzhen, CN;
Guoming Chen, Shenzhen, CN;
Ke Peng, Shenzhen, CN;
Kaiwen Liu, Shenzhen, CN;
ZTE Corporation, Shenzhen, Guangdong, CN;
Abstract
A hierarchical audio coding, decoding method and system are provided. The method includes dividing frequency domain coefficients of an audio signal after MDCT into a plurality of coding sub-bands, quantizing and coding amplitude envelope values of coding sub-bands; allocating bits to each coding sub-band of the core layer, quantizing and coding core layer frequency domain coefficients to obtain coded bits of core layer frequency domain coefficients; calculating the amplitude envelope value of each coding sub-band of the core layer residual signal; allocating bits to each coding sub-band of the extended layer, quantizing and coding the extended layer coding signal to obtain coded bits of the extended layer coding signal; multiplexing and packing amplitude value envelope coded bits of each coding sub-band composed by core layer and extended layer frequency domain coefficients, core layer frequency coefficients coded bits, and extended layer coding signal coded bits, then transmitting to the decoding end.