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:
May. 20, 2014
Filed:
Jun. 30, 2011
Dongping Jiang, Shenzhen, CN;
Hao Yuan, Shenzhen, CN;
KE Peng, Shenzhen, CN;
Guoming Chen, Shenzhen, CN;
Jiali LI, Shenzhen, CN;
Dongping Jiang, Shenzhen, CN;
Hao Yuan, Shenzhen, CN;
Ke Peng, Shenzhen, CN;
Guoming Chen, Shenzhen, CN;
Jiali Li, Shenzhen, CN;
ZTE Corporation, , CN;
Abstract
The present invention relates to a method and system for audio encoding and decoding and a method for estimating a noise level, and the method for estimating a noise level in the present invention comprises: estimating a power spectrum of an audio signal to be encoded according to a frequency domain coefficient of the audio signal to be encoded; and estimating a noise level of a zero bit encoding subband audio signal according to the power spectrum obtained by calculating, and this noise level for controlling an energy proportion of noise filling to spectral band replication during decoding; wherein a zero bit encoding subband refers to an encoding subband of which allocated bit number is zero. The present invention can well reconstruct the uncoded frequency domain coefficients.