ACTIVE NOISE CANCELLATION DEVICE

The disclosure relates to an active noise cancellation device (100) for cancelling a primary acoustic path (101) between a noise source (102) and a microphone (103) by an overlying secondary acoustic path (105) between a canceling loudspeaker (107) and the microphone (103), the device comprising: a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SONG, Yang, DZHIGAN, Victor Ivanovich, QIN, Jingfan, PETROVSKY, Alexey Alexandrovich
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:	The disclosure relates to an active noise cancellation device (100) for cancelling a primary acoustic path (101) between a noise source (102) and a microphone (103) by an overlying secondary acoustic path (105) between a canceling loudspeaker (107) and the microphone (103), the device comprising: a first input (104) for receiving a microphone signal from the microphone (103); wherein the first electrical compensation path (111) and the second electrical compensation path (121) are coupled in parallel between a first node (140) and the first input (104) to provide the first noise canceling signal (106) for a feed-backward prediction of the noise source (102); wherein the third electrical compensation path (211) and the fourth electrical compensation path (221) are coupled in parallel between a second node (240) and the first input (104) to provide the second noise canceling signal (206) for a feed-forward prediction of noise source (102).