Active control of periodic fan noise in laptops: spectral width requirements in a delayed buffer implementation
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
2009
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| _version_ | 1876489266730631168 |
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| author | H. A. Cordourier-Maruri |
| author_facet | H. A. Cordourier-Maruri |
| contents | Active control of periodic fan noise in laptops: spectral width requirements in a delayed buffer implementation H. A. Cordourier-Maruri F. Orduña-Bustamante Ingeniería fan noise tonal noise Computer noise periodic noise computer cooling fan An active control system intended for the reduction of strictly periodic noise components in computer cooling fans is described, which is based on high-performance digital sound device architectures found in some personal computers. The system overcomes causality and synchronization constrains imposed by delayed buffering, as usually found in computer audio processing. Performance of the system is demonstrated and evaluated through measurements in a physical implementation of active noise control of synthetic tones combined with laptop fan noise, carried out under anechoic and slightly reverberant conditions. Tests on other types of tonal noise sources, like an electrical transformer, were also carried out. However, its wider applicability to the cancellation of tonal noise has been proved compromised by weak periodicity issues found and reported in this work. Also, a study of noise spectral width requirements for successful operation is presented. 2009 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47413034002 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.2 Vol.7 |
| format | Artículo científico |
| id | redalyc_47413034002 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Active control of periodic fan noise in laptops: spectral width requirements in a delayed buffer implementation H. A. Cordourier-Maruri Ingeniería fan noise tonal noise Computer noise periodic noise computer cooling fan Active control of periodic fan noise in laptops: spectral width requirements in a delayed buffer implementation H. A. Cordourier-Maruri F. Orduña-Bustamante Ingeniería fan noise tonal noise Computer noise periodic noise computer cooling fan An active control system intended for the reduction of strictly periodic noise components in computer cooling fans is described, which is based on high-performance digital sound device architectures found in some personal computers. The system overcomes causality and synchronization constrains imposed by delayed buffering, as usually found in computer audio processing. Performance of the system is demonstrated and evaluated through measurements in a physical implementation of active noise control of synthetic tones combined with laptop fan noise, carried out under anechoic and slightly reverberant conditions. Tests on other types of tonal noise sources, like an electrical transformer, were also carried out. However, its wider applicability to the cancellation of tonal noise has been proved compromised by weak periodicity issues found and reported in this work. Also, a study of noise spectral width requirements for successful operation is presented. 2009 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47413034002 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.2 Vol.7 |
| title | Active control of periodic fan noise in laptops: spectral width requirements in a delayed buffer implementation |
| topic | Ingeniería fan noise tonal noise Computer noise periodic noise computer cooling fan |
| url | https://www.redalyc.org/articulo.oa?id=47413034002 |