Method for increasing noise reduction of feedback-type active noise reduction earphones, and active noise reduction earphones (English)
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2015
- Patent / Electronic Resource
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Title:Method for increasing noise reduction of feedback-type active noise reduction earphones, and active noise reduction earphones
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Patent number:CN105049979
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Publication date:2015-11-11
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Type of media:Patent
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Type of material:Electronic Resource
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Language:English
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Classification:
IPC: H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS, Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler -
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