公开(公告)号：EP0824845B1

公开(公告)日：1998-09-30

申请号：EP95919994.4

申请日：1995-05-02

申请人： TOPHOLM & WESTERMANN APS

发明人： TOPHOLM, Jan

IPC分类号： H04R25/00 ,  H04R3/02

CPC分类号： H04R25/70 ,  H04R25/453 ,  H04R25/505 ,  H04R25/652 ,  H04R2225/41 ,  H04R2430/03 ,  H04R2460/15

摘要： The process for controlling a programmable or program-controllable hearing aid for in-situ adjustment of said hearing aid to an optimum target gain in one or more frequency bands by establishing the hearing threshold level of the wearer for one or more frequency bands, determining the target input/output response for the detected hearing loss and generating a corresponding parameter set for an ideal input/output response for the detected hearing loss under feedback-free conditions, by setting the control parameter set of a signal processor initially to an input/output response with a gain equal to the maximum target gain, operating the hearing aid in-situ in accordance with said initial input/output response while monitoring said hearing aid for the occurrence of any acoustic feedback, and if no noticeable feedback is detected setting said inital parameter set for said input/output response into said hearing aid, and if noticeable acoustic feedback is detected reducing the gain over at least one of said frequency bands while leaving unchanged with respect to said initial parameter set the gain in any other frequency band, to thereby obtain an adjusted input/output response for at least said one frequency band.

公开(公告)号：EP0676099B1

公开(公告)日：1997-06-18

申请号：EP94900107.7

申请日：1993-11-06

申请人： TOPHOLM & WESTERMANN APS

发明人： ANDERSEN, Henning, Haugaard

IPC分类号： H03F3/45 ,  H03F1/32

CPC分类号： H03F3/45502 ,  H03F1/3211 ,  H03F3/45479 ,  H03F2203/45542 ,  H03F2203/45648 ,  H03F2203/45696 ,  H04R25/50

摘要： The invention relates to a circuit arrangement for an integrated output amplifier (1) with two constant current sources (2, 3), a voltage amplifier with two inputs (5, 6) and two outputs (7, 8) and two output transistors (Q1, Q2) coupled thereto and two feedback networks (9, 10) producing negative feedback between the output transistors and the input transistors of the voltage amplifier (4) allocated thereto. The first two feedback networks (9, 10) are connected between the collectors of the output transistors (Q1, Q2) and the base electrodes of the appropriate input transistors of the voltage amplifier (4). In addition there is a third feedback network (11) coupled on the input side to the base electrode of the output transistors and on the output side, via a transistor (Q3) acting as a current sink, to the input of a current distribution network (16) having a signal input (17). The current distribution network (16) has two parallel branches (18, 19) between which the current flowing through this network, controlled by the signal at the signal input (17) can be split, the branches (18 or 19) of the current distribution network (16) being connected on the one hand to the constant current sources (2 or 3) and on the other to the inputs of the voltage amplifier (4).

公开(公告)号：EP0732036A1

公开(公告)日：1996-09-18

申请号：EP94924834.0

申请日：1994-08-02

申请人： TOPHOLM & WESTERMANN APS

发明人： LUDVIGSEN, Carl

IPC分类号： H03G9 ,  H04R25

CPC分类号： H03G9/24 ,  H03G9/005 ,  H03G9/025 ,  H04R25/356 ,  H04R25/505 ,  H04R2225/43

摘要： A circuitry is disclosed for a preferably programmable hearing aid with at least one microphone, at least one electronic signal processing circuit (3), at least one channel and one output transducer (7). The electronic signal processing circuit (3) has a regulation circuit for continuously determining or calculating one or several percent values of the input signal based on a continuous analysis and evaluation of the frequency and/or amplitude distribution of the input signal. These percent values are directly or indirectly used as control signals for regulating the amplification and/or the frequency response of the electronic signal processing circuit. At least one percentage generator (10) connected at the input side consists of an integrator (11), a first incrementing control stage (12) connected to the integrator (11) and a second counting down control stage (13) connected to the first control stage (12), as well as a comparing stage (14) with at least two inputs. The input of the circuit is directly or indirectly connected to the input of the comparing stage (14), whereas a second input of the comparing stage is connected to the output of the integrator (11) and is directly or indirectly connected to the signal processing circuit (3) through a combination and control logic (15) by at least one control line. Both outputs of the comparing stage (14) are connected to the control stage (12) or to the control stage (13).

公开(公告)号：EP0516808B1

公开(公告)日：1996-01-24

申请号：EP92902538.5

申请日：1991-11-19

申请人： TOPHOLM & WESTERMANN APS

发明人： TÖPHOLM, Jan ,  WESTERMANN, Soeren ,  ANDERSEN, Svend, Vittig

IPC分类号： H04R25/00

CPC分类号： H04R25/658 ,  A61C13/0004 ,  B29C64/00 ,  G05B19/4207 ,  G05B2219/37044 ,  G05B2219/45172 ,  G05B2219/49011 ,  G05B2219/49013 ,  G05B2219/49015 ,  H04R25/652

摘要： The invention relates to a process for making otoplasty or adaptive ear pieces individually matched to the shape of an auditory canal and consists of the following steps: a) direct or indirect tracing of the shape of the auditory canal and conversion of the values obtained into digital form; b) conversion of the digital representation of this shape into a multi-dimensional computer model of the outer shape of otoplasty or adaptive ear piece; c) selection of the various components/functions for the inside of the computer model with simultaneous establishment of the wall thickness and optimisation of the positions of the components/functions for best possible operation and minimum bulk; d) computer controlled production of an otoplasty or adaptive ear piece from the data thus obtained from the optimised, three-dimensional computer representation of the otoplasty or adaptive ear piece.

公开(公告)号：EP0524947B1

公开(公告)日：1994-06-01

申请号：EP91905119.3

申请日：1991-03-02

申请人： TOPHOLM & WESTERMANN APS

发明人： ANDERSEN, Henning, Haugaard

IPC分类号： H03H7/40 ,  A63H30/04

CPC分类号： A63H30/04 ,  H03H7/40

摘要： The invention concerns a circuit for the resonant cavity in a frequency-shift HF transmitter output stage, with a first capacitance (2), a first inductance (3) and a first switch (5) for feeding the HF signal to the resonant cavity. To switch the resonant cavity over to resonance with the other transmission frequency, additional capacitance (2a, 2b, 2c) or additional inductance (3a, 3b, 3c) can be switched in or out of the cavity either in parallel or in series with the cavity capacitance or in series or in parallel with the cavity inductance by means of additional switch means (4).

公开(公告)号：EP0453450B1

公开(公告)日：1993-08-04

申请号：EP90900180.2

申请日：1990-01-08

申请人： TOPHOLM & WESTERMANN APS

发明人： TOPHOLM, Jan

IPC分类号： H04R25/00

CPC分类号： H04R25/558 ,  H04R25/70 ,  H04R2225/41

摘要： A remote-controlled, programmable hearing aid system comprises a hearing aid (2) in which amplifiers are housed, a signal-processing circuit whose transmission characteristic at any time can be determined by means of a set of control parameters, and an external control device (1) with an emitter for cordless transmission of control parameters dependent on the hearing aid and a receiver circuit arranged in the hearing aid for receiving the control parameters. This system is characterized in that input means (3) for inputting audiometric data/information and a data-processing device (4) for deriving control parameters from the audiometric data/information are provided for transmission from the control device to the hearing aid.

公开(公告)号：EP0124566A1

公开(公告)日：1984-11-14

申请号：EP83903534.0

申请日：1983-11-04

申请人： TOPHOLM & WESTERMANN APS

发明人： TOPHOLM, Christian

IPC分类号： H04R25

CPC分类号： H04R25/558

摘要： Un appareil conçu pour être utilisé pour le réglage du mécanisme de réglage secondaire (18) d'un appareil de prothèse auditive (10) comprend un adapteur (20) pouvant être placé sur l'appareil de prothèse auditive de telle façon que les mécanismes de réglage de la prothèse sont couplés aux mécanismes mobiles correspondants (26) de l'adapteur. Ces mécanismes mobiles sont successivement couplés à leur mécanisme respectif d'activation (28) situé sur un pupitre de commande (19) par l'intermédiaire de leurs fils respectifs (27) placés dans un câble flexible Bowden (21), permettant le réglage du mécanisme de réglage secondaire de l'appareil de prothèse auditive, alors que le patient porte la prothèse en position d'utilisation, grâce à la manipulation du mécanisme d'activation du pupitre de commande. Des mécanismes de transformation peuvent être insérés entre ceux-ci et les fils du câble de façon à pouvoir donner au pupitre et à ses boutons, ainsi qu'à l'importance de leur mouvement, une taille adéquate permettant une manipulation agréable.

公开(公告)号：EP1129600A1

公开(公告)日：2001-09-05

申请号：EP98955554.5

申请日：1998-11-09

申请人： TOPHOLM & WESTERMANN APS

发明人： WESTERMANN, Soeren Erik ,  KROMAN, Morten

IPC分类号： H04R25/00

CPC分类号： H04R25/70 ,  H04R25/505

摘要： The application relates to an in-situ method to measure and adjust the sound signal presented to the eardrum by means of a hearing aid and a hearing aid employing such a method. The hearing aid comprises microphone (1), signal processing system comprising digital signal processor (2) for transforming the microphone signal into a transformed signal according to a desired transformation function, sensor (4) sensing the sound signal appearing in front of the eardrum and comparator (5). Reference signal processor (6) generates a reference signal based on the output of microphone (1) and representative of the desired sound signal in front of the eardrum. A transfer function between receiver (3) and the output of sensor (4) is established to correct the process in reference signal processor (6). The sound signal in front of the eardrum is sensed, fed back and compared in said comparator (5) with said reference signal. In the case that the difference between the sensed signal and the reference signal is above a predetermined threshold the transformed signal is corrected to adjust said signal in front of the eardrum to the desired sound signal.

公开(公告)号：EP1097607A1

公开(公告)日：2001-05-09

申请号：EP99908852.9

申请日：1999-02-05

申请人： TOPHOLM & WESTERMANN APS

发明人： ANDERSEN, Henning, Hougaard ,  LUDVIGSEN, Carl

IPC分类号： H04R25/00

CPC分类号： H04R25/407 ,  H04R25/505

摘要： The invention relates to a hearing aid with beam forming properties, having at least two microphone channels (1a, 1b) for at least two microphones (2a, 2b), said microphone channels comprising each an analog to digital converter (3a, 3b) and having at least one programmable or program controlled signal processor (5), as well as a digital to analog converter, and at least one receiver and a battery for power supply. The invention particularly comprises in each microphone channel (1a, 1b) a sigma-delta-type analog to digital converter (3a, 3b) including a digital low pass filter and a decimator (4) for converting a 1 Bit Stream of a high clock frequency into a digital word sequence of a lower clock frequency. At least one of said at least two microphone channels contains a controllable delay device (6) connected to the input side of the respective digital low pass filter and decimator (4) of said channel, said delay device (6) being controllable by said at least one signal processor (5). Preferably the delay device (6) is integrated into said sigma-delta-ADC (3).

公开(公告)号：EP1097606A1

公开(公告)日：2001-05-09

申请号：EP99900878.2

申请日：1999-01-15

申请人： TOPHOLM & WESTERMANN APS

发明人： GUNNERSEN, Finn ,  TÖPHOLM, Jan

IPC分类号： H04R25/00

CPC分类号： H04R25/654 ,  H04R2460/17 ,  Y10T29/49005 ,  Y10T29/4957 ,  Y10T29/49572 ,  Y10T29/49575 ,  Y10T29/53909

摘要： For the protection of an in-the-ear hearing aid against contamination by ear wax through the acoustic outlet port (34a) or a vent, a replaceable ear wax guard (36) is inserted in the aid and comprises an essentially tubular element with a through-going cavity and an abutment collar in one end for sealing abutment against the hearing aid housing (31). For an easy and safe insertion and removal of the ear wax guard (36), an applicator is used, which in one end has a smooth pin for introduction in the through-going cavity of the ear wax guard (36) and in the other end a harpoon-shaped catch member. For mounting of the ear wax guard (36) a hose or tube member serving as acoustic outlet canal (34) is connected to an abutment collar (33) in abutment with the outside of the hearing aid. The abutment collar is designed with oversize standard dimensions and adapted to an individually user-adapted hearing aid housing by preparation of its periphery edge.