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Browsing Engineering by Author "Paarmann, Larry D."

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Design of RSD-cyclic and hybrid RSD-Cyclic/sigma-delta ADCs

Atris, Youssef H. (Wichita State University, 2007-07)

In this research work two contributions to the area of analog to digital data converters have been discussed. The area of focus is the RSD-Cyclic and sigma-delta ADC. First a novel hybrid RSD-Cyclic-sigma-delta architecture ...
Mapping a controller from the s-domain to z-domain using Magnitude Invariance Method (MIM).

Vadhavkar, Prathamesh R.; Watkins, John Michael; Paarmann, Larry D. (Wichita State University. Graduate School., 2007-04-27)

We are presenting a new approach for mapping a continuous time controller to a discrete time controller. Methods traditionally used for this mapping include forward rectangular rule, bilinear rule and zero-pole matching. ...
Nonlinear spectrum compression for the hearing impaired via a frequency-domain processing algorithm

Paarmann, Larry D. (IEEE, 2006-08-30)

In this paper, the results of both normal-hearing, and profoundly hearing-impaired adults, tested with spectrum compressed speech via the modified chirp-z algorithm, with and without visual stimuli, are reported. Ten ...
RC implementation of an audio frequency band Butterworth MASH delta-sigma analog to digital data converter -- FULL TEXT IS NOT AVAILABLE

Vijjapu, Sudheer (2006-08)

Most present day implementations of delta-sigma modulators are discrete-time ones using switched-capacitor circuits. A resistor-capacitor (RC) implementation of a delta-sigma analog to digital converter (ADC) does not use ...
RC implementation of an audio frequency band fourth order Chebyshev Type II delta-sigma analog to digital data converter -- FULL TEXT IS NOT AVAILABLE

Baig, Shams Javid (2006-12)

Delta sigma data converters have found to be of greater interest for almost 40 years now. Continuous time implementation of these converters, especially for high speed and low power applications has been very challenging. ...