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 +80dB. This paper discusses the implementation of a fifth-order sigma delta modulator with an oversampling frequency of 5.68MHz. 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.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.