A discussion of contemporary noise reduction techniques illustrates the drawbacks inherent in any purely analog or purely digital approach. In this paper a new noise reduction scheme is proposed which utilizes the wide dynamic range of analog systems and the flexibility of digital systems, with the emphasis on the latter. A number of new features made possible by such a system are described, indicating another powerful use for the microprocessor.
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https://aes2.org/publications/elibrary-page/?id=2831
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