Overflow Avoidance Techniques in Cascaded IIR Filter Implement - TMS320 DSP

Texas Instruments

Published Date: 11/20/1998

Description

DSP programmers are faced with the problem of dealing with overflows that occur as a result of some computation. A typical case is that of the implementation of recursive or infinite impulse response (IIR) digital filters. These implementations are very prone to overflows due to the recursive naturs of the filters. In this application report different methodologies are presented to help programm