Overflow Avoidance Techniques in Cascaded IIR Filter Implementations on the TMS320 DSP's
Aaron Kofi Aboagye · 1999
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 programmers avoid or deal with these overflow conditions. The application report also presents a simple design example that utilizes one of the techniques in Matlab .