Sample rate converter and method to perform sample rate conversion,申请号US20070832258-传众专利搜索

Sample rate converter and method to perform sample rate conversion

申请公布号：US7489259(B2)

申请号：US20070832258

申请日期：2007.08.01

申请公布日期：2009.02.10

申请人：

CREATIVE TECHNOLOGY LTD.

发明人：SAVELL THOMAS C

分类号：H03M7/00

主分类号：H03M7/00

摘要：Embodiments of a sample rate converter and method for sample rate conversion are generally described herein. In some embodiments, an interpolation module calculates new digital samples for insertion into a digital sample ring, a cache module provides input digital samples of a digital sample stream to the interpolation module, and a control module maintains and provides state information to the interpolation module and the cache module. Based on pitch parameters, the control module provides the interpolation module a fractional portion of an address for use in calculating the new digital samples and provides the cache module with an integer portion of the address and an address increment.