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Active Noise Control FAQ |
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Frequently Asked Questions: Active noise control
The FAQ you are now reading discusses active noise control, a novel way of using basic physics to control noise and/or vibration. What is an FAQ, you say? Well, the Internet supports thousands of "newsgroups" -- discussion forums covering every imaginable topic. An FAQ (Frequently Asked Questions list) is a summary written to answer specific questions that arise repeatedly in the newsgroups. This particular FAQ was written for the newsgroups news:alt.sci.physics.acoustics and news:comp.dsp, which focus on acoustics and digital signal processing, respectively. This FAQ has four purposes:
1.1. What's new in the Active Control FAQ1.2. Finding the most recent FAQ1.3. Contributors. 1.4. Administrative trivia1.5. Basics: what is sound? Frequency? Wavelength?2.1. What is active control of noise/vibration?2.2. Is active control new?2.3. Are there different kinds of active control?2.4. Is active noise control like noise masking?2.5. How can adding sound make a system quieter? 2.6. When does active control work best?2.7. What is adaptive active control?2.8. What are some typical applications?2.9. Are all 'active headphones' the same?2.10. What are the benefits of active control?2.11. What was that short story by Arthur C. Clarke?2.12. How can I do a simple, inexpensive active control demo?3.1. What is the active control newsletter?3.2. What companies produce active control products?3.3. What universities teach active noise control?3.4. How can I learn more via Internet?3.5. Are there short courses about active control?3.6. References from the general literature3.7. References from the technical literature |
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