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What is Anti-Noise

Chapter 549
Encyclopedia of Information Science and Technology, Second Edition
Estimated replica of acoustic noise generated by an active noise canceller system, which is used to cancel an environmental noise.
Published in Chapter:
Signal Processing Techniques for Audio and Speech Applications
Hector Perez-Meana (National Polytechnic Institute, Mexico) and Mariko Nakano-Miyatake (National Polytechnic Institute, Mexico)
Copyright: © 2009 |Pages: 5
DOI: 10.4018/978-1-60566-026-4.ch549
Abstract
Since the apparition of the first standalone digital signal processor (DSP) in 1980, the development of very-largescale integration (VLSI) technology has allowed an impressive improvement on the performance of signal processing devices. This fact has made it possible to implement more efficient systems for storage, transmission, enhancement, protection, and reproduction of speech and audio signals. Some of these successful applications, shown in Table 1, have contributed to improving the performance of communications, storage, and medical systems, as well as security and copyright protection.
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