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. 21, 2015
Filed:
Oct. 12, 2010
Zhibin Lin, Nanjing, CN;
Guoming Chen, Shenzhen, CN;
Zheng Deng, Nanjing, CN;
Hao Yuan, Shenzhen, CN;
Jiali LI, Shenzhen, CN;
KE Peng, Shenzhen, CN;
Kaiwen Liu, Shenzhen, CN;
Zhibin Lin, Nanjing, CN;
Guoming Chen, Shenzhen, CN;
Zheng Deng, Nanjing, CN;
Hao Yuan, Shenzhen, CN;
Jiali Li, Shenzhen, CN;
Ke Peng, Shenzhen, CN;
Kaiwen Liu, Shenzhen, CN;
ZTE Corporation, Shenzhen, Guangdong Province, CN;
Abstract
The audio coding method and system of lattice vector quantization is provided in the invention. The method comprises: dividing frequency domain coefficients of an audio signal for which a modified discrete cosine transform (MDCT) has been performed into a plurality of coding sub-bands, and quantizing and coding an amplitude envelope value of each coding sub-band to obtain coded bits of amplitude envelopes; performing bit allocation on each coding sub-band, and performing normalization, quantization and coding respectively on vectors in a low bit coding sub-band with pyramid lattice vector quantization and on vectors in a high bit coding sub-band with sphere lattice vector quantization to obtain coded bits of the frequency domain coefficients; multiplexing and packing the coded bits of the amplitude envelope and the coded bits of the frequency domain coefficients of each coding sub-band, then sending them to a decoding side.