EP 0814456 A3 19981007 - Active noise or vibration control (ANVC) system and method including enhanced reference signals
Title (en)
Active noise or vibration control (ANVC) system and method including enhanced reference signals
Title (de)
Aktives Lärm- oder Schwingungskontrollesystem und -anordnung mit verstarkten Referenzsignalen
Title (fr)
Système et procédé de contrÔle active du bruit ou vibration comprenant signaux de référence améliorés
Publication
Application
Priority
US 67345896 A 19960617
Abstract (en)
[origin: EP0814456A2] An ANVC system (50) and method of enhancing the reference (input) signal (51) provided from a reference sensor (52) in a feedforward-type Active Noise or Vibration Control (ANVC) system (50). Preferably, an Adaptive Line Enhancer (ALE) (54) is provided in the input path for reducing the uncorrelated noise present in the reference signal (51). In one aspect, a tone(s) present can be enhanced by reducing broadband uncorrelated noise. In another aspect, the broadband input to the ANVC control (58) can be enhanced by eliminating uncorrelated tone(s). The filter structure used in the ALE (54) may include IIR or FIR and the algorithm used to update the ALE filters may include LMS, RLS, or GMV. Parametric and adaptive inverse ALEs (69) and (80) are also described. In alternate embodiments, multiple ALEs are arranged in cascaded or parallel relationship. Further, the tonal output (22) of the ALE (54) may be used as an input to auxiliary components such as Engine Vibration Monitors (EVMs). The ALEs are beneficial in both tonal and broadband ANVC systems (50). <IMAGE>
IPC 1-7
IPC 8 full level
G10K 11/178 (2006.01)
CPC (source: EP US)
G10K 11/17817 (2017.12 - EP US); G10K 11/17823 (2017.12 - EP US); G10K 11/17854 (2017.12 - EP US); G10K 11/17879 (2017.12 - EP US); G10K 11/17881 (2017.12 - EP US); G10K 2210/129 (2013.01 - EP); G10K 2210/3027 (2013.01 - EP); G10K 2210/3028 (2013.01 - EP)
Citation (search report)
- [X] EP 0590350 A2 19940406 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [X] EP 0598120 A1 19940525 - FUJITSU TEN LTD [JP]
- [A] US 5226016 A 19930706 - CHRISTMAN RUSSEL A [US]
- [A] WIDROW B ET AL: "ADAPTIVE NOISE CANCELLING: PRINCIPLES AND APPLICATIONS", PROCEEDINGS OF THE IEEE, vol. 63, no. 12, 1 December 1975 (1975-12-01), pages 1692 - 1716, XP000567974
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 97302679 A 19970418