A 2-digit multidimensional logarithmic number system filterbank for a digital hearing aid architecture
H. Li, GRAHAM A. JULLIEN, Vassil S. Dimitrov, Majid Ahmadi, W. Miller · 2003
This paper addresses the design and implementation of a filterbank for digital hearing aids using a multi-dimensional logarithmic number system (MDLNS). The logarithmic properties of the MDLNS allow for reduced complexity multiplication, and large dynamic range, and a multiple-digit MDLNS provides a considerable reduction in hardware complexity compared to a conventional logarithmic number system (LNS) approach. In this paper we discuss the design and implementation of both a 1-digit and 2-digit 2-D MDLNS filterbank and provide initial simulation results.