𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A STUDY OF ACTIVE NOISE CANCELLATION IN DUCTS

✍ Scribed by C.-N. Wang; C.-C. Tse; C.-W. Wen

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
221 KB
Volume
11
Category
Article
ISSN
0888-3270

No coin nor oath required. For personal study only.

✦ Synopsis

An infinite impulse response (IIR) filter based on RLMS algorithm is used to control the sound propagated in a duct. The offline error path modification is also included in the algorithm in order to obtain a better result. Three different types of noise source, i.e. pure tone, dual sine and narrowband-limited noise, are considered. This controller not only has a strong effect on the noise reduction for pure tone and dual sine sound sources, but also reduces the narrowband-limited noise markedly. Further study on the reduction of the broad noise source is required however.

πŸ“œ SIMILAR VOLUMES

A TRAVELLING WAVE APPROACH TO ACTIVE NOI
A TRAVELLING WAVE APPROACH TO ACTIVE NOISE CONTROL IN DUCTS
✍ J. Yuan; K.-Y. Fung πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 243 KB

This paper presents a new scheme for active noise control (ANC) in ducts. It uses three pressure sensors to measure and separate the far field wave into the incident wave from the primary noise source, the reflected wave from the duct outlet, and the anti-sound wave generated by the loudspeaker. The

ACTIVE CANCELLATION OF NOISE IN A CAR CA
ACTIVE CANCELLATION OF NOISE IN A CAR CABIN USING THE ZERO SPILLOVER CONTROLLER
✍ MINGSIAN R. BAI; HSIUHONG CHEN πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 241 KB

In active noise control problems, spillover will occur because of the Bode integral constraint if the performance sensors and measurement sensors are collocated, or if the control speakers and the noise sources are collocate. This paper is focused on the implementation of a multiple-channel zero-spi