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:
Mar. 12, 2002
Filed:
Aug. 19, 1999
Yau Wai Lucas Hui, Singapore, SG;
Sapna George, Singapore, SG;
STMicroelectronics Asia Pacific PTE Limited, Singapore, SG;
Abstract
A method and apparatus for decoding a bitstream ( ) of transform coded multi-channel audio data. The bitstream is subjected to a block decoding process ( ) to obtain for each input audio channel within the multi-channel audio data a corresponding block of frequency coefficients ( ). Each block of frequency coefficients ( ) is assigned a higher precision inverse transform or a lower precision inverse transform according to predetermined characteristics of the audio data represented by the block. The blocks of frequency coefficients are subsequently subjected to the assigned transform ( ) and an output audio signal ( ) is generated in response to each of the higher and lower precision inverse transform processes.