Title: VLSI realizing method adapted for multiple-frequency standard universal filter unit
Application Number: 200610030134 Application Date: 2006.08.17
Publication Number: 1909382 Publication Date: 2007.02.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03M7/30;G10L19/02
Applicant(s) Name: Shanghai Jiao Tong University Address:
Inventor(s) Name: Liu Qianru;Liu Peilin
Attorney & Agent: wang tilin wang guizhong
Abstract:
    The invention relates to a method for realizing VLSI used in multi-voice standard general filter unit, wherein said invention uses one system frame controlled via parameter, based on different standard filter demand, sets parameter and controls the operation of modules, to execute IMDCT transformation pretreatment, FFT calculation, IMDCT transformation following treatment, address projection and window treatment; each step needs control parameter to complete the operation relative to special standard; in said invention, all indexes and triangle function can be completed by using CORDIC conversation; the system frame has arithmetic unit, while the data processing in each step is completed by time-division distribution. The invention can effectively control chip area, which supports AAC, AC3, and WMA voice decoders.
Time: 17