EP1119219B1 - Elektrisch-akustischer Miniaturwandler - Google Patents
Elektrisch-akustischer Miniaturwandler Download PDFInfo
- Publication number
- EP1119219B1 EP1119219B1 EP01100376A EP01100376A EP1119219B1 EP 1119219 B1 EP1119219 B1 EP 1119219B1 EP 01100376 A EP01100376 A EP 01100376A EP 01100376 A EP01100376 A EP 01100376A EP 1119219 B1 EP1119219 B1 EP 1119219B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- miniature
- transducer
- electroacoustic transducer
- accordance
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/48—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using constructional means for obtaining a desired frequency response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
Definitions
- the invention relates to an electric-acoustic miniature converter for a hearing aid.
- Electric-acoustic miniature converters are used to convert electrical used in acoustic signals.
- numerous Applications such as hearing aids, be by electric-acoustic transducer small design, the so-called listeners, acoustic output signals generated.
- the transmission behavior of the transducers plays a major role.
- hearing aids is a balanced and adapted to the application frequency characteristics of great importance.
- the limits of the transmission behavior known Electric-acoustic miniature transducers are too high Frequencies out through the constructive transducer structure and generally provide an upper limit of transmittable Frequency range dar.
- EP 0 022 937 A1 is a reusable membrane with mechanical Crossover known for a speaker, at the reusable membrane of any number of concentric Membrane elements composed only with each other are connected with springs and in the speaker basket only with am extreme membrane element attacking springs are suspended.
- the converter comprises a housing, which delimits an interior from an exterior space as well a motor with a coil, a stack and a fitting, which are located substantially within the housing.
- the Housing consists of an upper tub, which with a lower Tub is connected and has an opening. The stack extends through the opening to the outside. It is intended that the stack terminates with the housing. It is further provided that the housing has a base and the Opening is arranged on this base.
- the transducer system behaves mass-determined and shows the transmission behavior a large drop in the radiated sound signals too high Frequencies down.
- the object of the present invention is the transmission behavior an electric-acoustic miniature converter for to improve a hearing aid.
- This object is achieved in an electric-acoustic miniature converter for a hearing aid with at least one drive and a membrane solved by the membrane in at least two sound-generating membrane areas is divided, the different frequency-dependent transmission behavior exhibit.
- the presented invention describes an electric-acoustic Miniature transducer, the too high frequencies out offers extended transmission range.
- the electric-acoustic miniature converter according to the invention instead a relatively large integral membrane advantageous a subdivided into at least two smaller membrane areas Membrane on.
- To divide the membrane is located between two adjacent membrane areas, for example at least one elastic element associated with the membrane areas connected is.
- the total area of the membrane areas and elastic elements may be the membrane surface of a correspond to conventional miniature converter.
- To drive the Membrane is preferably a membrane area with a drive pin connected. The drive is doing the stand technically via an electromagnetic, electrodynamic or piezoelectric drive.
- High frequencies are essentially only by the directly driven Membrane area emitted.
- the membrane By the relatively small sound-generating membrane surface and the associated, low driven mass at high frequencies is the membrane much less inhibited than the invention according to the invention Membrane of known miniature transducers.
- At lower frequencies is according to the invention on the elastic member and the the membrane area adjacent to the driven membrane area so excited that this too is effective for sound production is.
- the sound-generating membrane surface therefore corresponds in the essential at low frequencies of the membrane surface of a conventional miniature converter.
- the subdivision causes the transducer membrane a dynamic reduction of moving Masses in the membrane area and thus ensures a reduced Mass inhibition at higher frequencies.
- the transmission behavior of the miniature converter according to the invention is therefore at low and middle frequencies the transmission behavior known miniature transducer comparable, whereas the transmission range towards high frequencies in the miniature converter is advantageously extended according to the invention.
- FIG. 1 is an example of the subdivided membrane of a miniature transducer represented according to the invention.
- a membrane area 1 is a bead 2 with a frame element on Housing 3 of the miniature converter connected.
- a second, smaller one Membrane region 4 is connected via an elastic element 5 with bead-like consistency in the larger membrane area. 1 embedded.
- the direct Drive 6 connected to the smaller diaphragm area 4 can for example be designed as a ram on the the armature of an electromagnetic transducer system acts.
- the bead 2 and the masses of the membrane regions 1 and 4 results in the lower and middle frequency range a uniform movement of the entire membrane surface.
- the Membrane assembly is in a conventional manner in a Housing equipped with different volumes and channels built in, which the overall transmission characteristics in wide Specify sharing.
- the representation compares the transmission characteristic of a known hearing aid earphone (characteristic curve b, dotted) with a miniature transducer of the same design, however a divided into two sound-generating membrane areas Membrane according to Figure 1 has (characteristic a, dashed). Significant occurs when considering the transmission characteristics in the miniature converter according to the invention (characteristic a) the extension of the transmission range at higher Frequencies out.
- the miniature transducer can, as in Figure 3 represented, in particular used in a hearing aid device 7 be, which except the miniature transducer 8 at least one Microphone 9 and a signal processing unit 10 includes.
- the invention is not limited to the embodiment described limited, but can, without the basic idea of Leaving invention extended to a variety of variants become.
- a rectangular one Membrane structure is conceivable in which the membrane areas together arranged in rows. Again, the connection is made adjacent membrane areas via one between this lying elastic element.
- the suggestion of Membrane may also be outside the center, for example on Rand, done.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Electrophonic Musical Instruments (AREA)
Description
Claims (5)
- Elektrisch-akustischer Miniaturwandler für ein Hörhilfegerät (7) mit wenigstens einem Antrieb und einer Membran, dadurch gekennzeichnet, dass die Membran in wenigstens zwei schallerzeugende Membranbereiche (1, 4) unterteilt ist, die verschiedene frequenzabhängige Übertragungsverhalten aufweisen.
- Elektrisch-akustischer Miniaturwandler nach Anspruch 1, dadurch gekennzeichnet, dass zwischen zwei benachbarten Membranbereichen (1, 4) wenigstens ein elastisches Element (5) angeordnet ist.
- Elektrisch-akustischer Miniaturwandler nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Membranbereiche (1, 4) und das elastische Element (5) ein mechanisches Resonanzsystem bilden.
- Elektrisch-akustischer Miniaturwandler nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Membranbereiche (1, 4) ringförmig um eine gemeinsame Symmetrieachse angeordnet sind.
- Elektrisch-akustischer Miniaturwandler nach Anspruch 4, dadurch gekennzeichnet, dass der im Zentrum liegende Membranbereich (4) mit dem Antrieb (6) mechanisch verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10002567A DE10002567C1 (de) | 2000-01-21 | 2000-01-21 | Elektrisch-akustischer Miniaturwandler |
DE10002567 | 2000-01-21 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1119219A2 EP1119219A2 (de) | 2001-07-25 |
EP1119219A3 EP1119219A3 (de) | 2005-03-30 |
EP1119219B1 true EP1119219B1 (de) | 2005-12-07 |
Family
ID=7628313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01100376A Expired - Lifetime EP1119219B1 (de) | 2000-01-21 | 2001-01-05 | Elektrisch-akustischer Miniaturwandler |
Country Status (6)
Country | Link |
---|---|
US (1) | US20010009587A1 (de) |
EP (1) | EP1119219B1 (de) |
AT (1) | ATE312496T1 (de) |
DE (2) | DE10002567C1 (de) |
DK (1) | DK1119219T3 (de) |
ES (1) | ES2254264T3 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0102865D0 (en) * | 2001-02-06 | 2001-03-21 | Secr Defence Brit | Panel form loudspeaker |
CN1554208A (zh) * | 2001-09-10 | 2004-12-08 | ��ɣ��˹�������� | 具有综合信号处理电子设备的微型扩音器 |
DE102007003164A1 (de) * | 2007-01-22 | 2008-07-24 | Siemens Ag | Akustische Wiedergabevorrichtung und Verfahren zur Wiedergabe eines akustischen Signals |
EP3201122B1 (de) | 2014-10-02 | 2022-12-28 | InvenSense, Inc. | Mikrobearbeitete ultraschallwandler mit einer geschlitzten membranstruktur |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534827A (en) * | 1968-06-19 | 1970-10-20 | Stephen L Heidrich | Electro-acoustic high impedance transducer |
DE2751700A1 (de) * | 1977-11-19 | 1979-05-23 | Rainer C Friz | Lautsprechermehrwegmembrane mit mechanischer frequenzweiche |
DE2927848C2 (de) * | 1979-07-10 | 1982-05-19 | Rainer Cornelius 8000 München Friz | Lautsprecher mit Mehrwegmembrane |
US5960093A (en) * | 1998-03-30 | 1999-09-28 | Knowles Electronics, Inc. | Miniature transducer |
-
2000
- 2000-01-21 DE DE10002567A patent/DE10002567C1/de not_active Expired - Fee Related
-
2001
- 2001-01-05 AT AT01100376T patent/ATE312496T1/de not_active IP Right Cessation
- 2001-01-05 EP EP01100376A patent/EP1119219B1/de not_active Expired - Lifetime
- 2001-01-05 DE DE50108266T patent/DE50108266D1/de not_active Expired - Lifetime
- 2001-01-05 DK DK01100376T patent/DK1119219T3/da active
- 2001-01-05 ES ES01100376T patent/ES2254264T3/es not_active Expired - Lifetime
- 2001-01-22 US US09/766,918 patent/US20010009587A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE10002567C1 (de) | 2001-09-27 |
US20010009587A1 (en) | 2001-07-26 |
ATE312496T1 (de) | 2005-12-15 |
ES2254264T3 (es) | 2006-06-16 |
EP1119219A2 (de) | 2001-07-25 |
EP1119219A3 (de) | 2005-03-30 |
DE50108266D1 (de) | 2006-01-12 |
DK1119219T3 (da) | 2006-04-10 |
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