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A simple sampled data model is presented which usefully approximates the nonlinear distortion introduced in a pulse width modulation digital-to-analogue converter. It is derived from an infinite model whose output complex spectrum exactly matches that of the modulator up to half the sampling frequency. An oversampled audio example illustrates the quality of the approximation.
Author (s): Hewitt, Alan;
Affiliation:
University of Portsmouth, Portsmouth, Hampshire, UK
(See document for exact affiliation information.)
AES Convention: 103
Paper Number:4598
Publication Date:
1997-09-06
Session subject:
Amplifiers and Attenuators
DOI:
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Hewitt, Alan; 1997; A Simple Approximation for the Distortion in a Pulse-Width-Modulation Digital-to-Analogue Converter [PDF]; University of Portsmouth, Portsmouth, Hampshire, UK; Paper 4598; Available from: https://aes.org/publications/elibrary-page/?id=7181
Hewitt, Alan; A Simple Approximation for the Distortion in a Pulse-Width-Modulation Digital-to-Analogue Converter [PDF]; University of Portsmouth, Portsmouth, Hampshire, UK; Paper 4598; 1997 Available: https://aes.org/publications/elibrary-page/?id=7181
@inproceedings{Hewitt1997a,
title={{A Simple Approximation for the Distortion in a Pulse-Width-Modulation Digital-to-Analogue Converter}},
author={Hewitt, Alan},
year={1997},
month={sep},
booktitle={Journal of the Audio Engineering Society},
publisher={Paper 4598; AES Convention 103; September 1997},
number={4598},
organization={AES},
}
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