Title :
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
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;
Conference_Titel :
System Theory, 2004. Proceedings of the Thirty-Sixth Southeastern Symposium on
Print_ISBN :
0-7803-8281-1
DOI :
10.1109/SSST.2004.1295713
