NZ623489A - Acoustic device and components - Google Patents

Acoustic device and components

Info

Publication number
NZ623489A
NZ623489A NZ623489A NZ62348914A NZ623489A NZ 623489 A NZ623489 A NZ 623489A NZ 623489 A NZ623489 A NZ 623489A NZ 62348914 A NZ62348914 A NZ 62348914A NZ 623489 A NZ623489 A NZ 623489A
Authority
NZ
New Zealand
Prior art keywords
speaker
film
magnetic field
conductors
halbach
Prior art date
Application number
NZ623489A
Inventor
Kwan Foo Lam
Original Assignee
Kwan Foo Lam
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2013901189A external-priority patent/AU2013901189A0/en
Application filed by Kwan Foo Lam filed Critical Kwan Foo Lam
Publication of NZ623489A publication Critical patent/NZ623489A/en

Links

Landscapes

  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

A planar magnetic speaker is disclosed. The speaker makes use of Halbach arrays to produce a stronger magnetic field (32) which increases the sensitivity of the device for any given individual magnet strength. Modules (66) are assembled from opposing Halbach arrays in holders (40) .The speaker as whole is assembled from the modules attached to a frame (50) having a film (60) bearing conductors (62) suspended there between. The connection pattern (77, 79) of the conductors is such that the alternating magnetic field direction of the Halbach arrays is countered so that the film is uniformly deflected on application of an electric current. The conductors are arranged in pairs (78) which are aligned with the Halbach array so that current direction is reversed in each successive pair across the film to match the magnetic field reversal across the array. A system of swappable speaker drivers is also disclosed.
NZ623489A 2013-04-08 2014-04-04 Acoustic device and components NZ623489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2013901189A AU2013901189A0 (en) 2013-04-08 Planar ribbon speakers

Publications (1)

Publication Number Publication Date
NZ623489A true NZ623489A (en) 2015-10-30

Family

ID=51794554

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ623489A NZ623489A (en) 2013-04-08 2014-04-04 Acoustic device and components

Country Status (2)

Country Link
AU (1) AU2014201937B2 (en)
NZ (1) NZ623489A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU214341U1 (en) * 2022-06-06 2022-10-21 Сергей Юрьевич Глазырин SOUND TRANSDUCER BASED ON HALBACH MAGNETIC ASSEMBLY

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9894442B2 (en) * 2015-01-16 2018-02-13 Apple Inc. Halbach array audio transducer
DE102017122660A1 (en) 2016-10-04 2018-04-05 Sennheiser Electronic Gmbh & Co. Kg Planar dynamic transducer
US10436018B2 (en) * 2016-10-07 2019-10-08 Baker Hughes, A Ge Company, Llc Downhole electromagnetic acoustic transducer sensors
US9942663B1 (en) 2016-12-22 2018-04-10 Apple Inc. Electromagnetic transducer having paired Halbach arrays
CN109587605A (en) * 2017-09-28 2019-04-05 富泰华工业（深圳）有限公司 Electromagnetic sensor
CN108064010B (en) * 2017-12-20 2020-10-09 何永斌 Belt loudspeaker diaphragm that non-uniform width was cut apart
CN114352616B (en) * 2021-12-31 2022-07-19 哈尔滨工业大学 Halbach array assembling method for magnetic levitation moving table

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7135792B2 (en) * 2004-05-12 2006-11-14 Dexter Magnetic Technologies, Inc. High field voice coil motor
US20060188120A1 (en) * 2005-02-23 2006-08-24 Michael Fisher Multiple active coil speaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU214341U1 (en) * 2022-06-06 2022-10-21 Сергей Юрьевич Глазырин SOUND TRANSDUCER BASED ON HALBACH MAGNETIC ASSEMBLY

Also Published As

Publication number Publication date
AU2014201937B2 (en) 2017-07-06
AU2014201937A1 (en) 2014-10-23

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