Design and implementation of IIR filters in STLC7545 analog front-end for voice communication

Author

Ikram, Muhammad Z. ; Siddiqui, Naseem A. ; Meraim, Karim A. ; Hua, Y.

Author_Institution

CresSoft Ltd., Islamabad, Pakistan

Volume

1

fYear

1997

fDate

4-4 Dec. 1997

Firstpage

65

Abstract

We present a design method for the synthesis of infinite impulse response (IIR) filters embedded in the enhanced V.34 analog front-end chip STLC7545 for voice communication. The chip provides a powerful solution for the implementation of several high-speed modems. Each IIR filter is designed as a cascade of second-order quadratic sections. A procedure for scaling the amplitude and representing the coefficients of these filters in fixed point format is then presented. Extensive numerical simulations have been carried out and the viability of the design method is justified by successful implementation of these filters on the hardware.

Keywords

IIR filters; IIR filter design; STLC7545 analog front-end; V.34 analog front-end chip; band-pass filter; digital signal processor; filter coefficients; fixed point format; high-speed modems; infinite impulse response; numerical simulations; second-order quadratic sections; voice communication; Band pass filters; Design methodology; Finite impulse response filter; Frequency; IIR filters; Low pass filters; Modems; Numerical simulation; Process design; Signal sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON '97. IEEE Region 10 Annual Conference. Speech and Image Technologies for Computing and Telecommunications., Proceedings of IEEE

Conference_Location

Brisbane, Qld., Australia

Print_ISBN

0-7803-4365-4

Type

conf

DOI

10.1109/TENCON.1997.647259

Filename

647259