Fifth-order sigma delta modulator with decimation

Author

Foo, Simon ; Moss, Pedro ; Norton, Terita ; Stafford, Danielle

Author_Institution

Dept. of Electr. & Comput. Eng., Florida Agric. & Mech. Univ., Tallahassee, FL, USA

fYear

2004

fDate

2004

Firstpage

522

Lastpage

526

Abstract

This paper describes the use of very high precision noise shaping sigma delta modulation techniques for high fidelity audio applications that require a signal-to-noise ratio (SNR) of at least +80 dB. This paper discusses the implementation of a fifth-order sigma delta modulator with an oversampling frequency of 5.68 MHz. Specifically this paper is a comparative study of Matlab and Pspice implementations of our fifth order sigma delta modulator with a VHDL-based finite impulse response (FIR) filter.

Keywords

FIR filters; audio signal processing; circuit simulation; hardware description languages; noise; sigma-delta modulation; signal sampling; telecommunication computing; 5.68 MHz; Matlab; Pspice implementations; VHDL-based finite impulse response filter; fifth-order sigma delta modulator; high fidelity audio applications; high precision noise shaping; oversampling frequency; signal-to-noise ratio; Analog-digital conversion; Band pass filters; Delta modulation; Delta-sigma modulation; Digital filters; Finite impulse response filter; Frequency; Low pass filters; Noise shaping; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

System Theory, 2004. Proceedings of the Thirty-Sixth Southeastern Symposium on

ISSN

0094-2898

Print_ISBN

0-7803-8281-1

Type

conf

DOI

10.1109/SSST.2004.1295713

Filename

1295713