EP1802171A1 - Traitement du signal pour prothèses auditives à multiples algorithmes de compression - Google Patents

Traitement du signal pour prothèses auditives à multiples algorithmes de compression Download PDF

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Publication number
EP1802171A1
EP1802171A1 EP06124535A EP06124535A EP1802171A1 EP 1802171 A1 EP1802171 A1 EP 1802171A1 EP 06124535 A EP06124535 A EP 06124535A EP 06124535 A EP06124535 A EP 06124535A EP 1802171 A1 EP1802171 A1 EP 1802171A1
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EP
European Patent Office
Prior art keywords
compression
level
signal processing
input
compression algorithm
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.)
Withdrawn
Application number
EP06124535A
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German (de)
English (en)
Inventor
Jens Hain
Andre Steinbuss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sivantos GmbH
Original Assignee
Siemens Audioligische Technik GmbH
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Filing date
Publication date
Application filed by Siemens Audioligische Technik GmbH filed Critical Siemens Audioligische Technik GmbH
Publication of EP1802171A1 publication Critical patent/EP1802171A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/41—Detection or adaptation of hearing aid parameters or programs to listening situation, e.g. pub, forest
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
    • 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
    • H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
    • H04R25/558—Remote control, e.g. of amplification, frequency

Definitions

  • the present invention relates to a signal processing device, in particular for a hearing aid, with a compression device for amplifying an input signal in accordance with a compression algorithm and with a classification device for classifying the input signal with regard to the hearing situation. Moreover, the present invention relates to a corresponding method for signal processing.
  • Hearing impaired people can usually only perceive a limited level range of input signals. It is therefore necessary to transform the entire input level range to this perceptible level range, which can be done by so-called compression.
  • the signal processing thus effects a compression of the input signals in order to adapt to the changed dynamic range of the hearing impaired person.
  • the gain is adapted adaptive level-dependent.
  • Such a method is known, for example, under the name "ADRO-Compression” (Adaptive Dynamic Range Optimization).
  • ADRO-Compression Adaptive Dynamic Range Optimization
  • This compression method can not be described with fixed compression knee points and / or compression ratios. Rather, here the gain is adaptively changed when the output level exceeds a predetermined maximum level or falls below a predetermined minimum level.
  • EP 1 307 072 A2 a method for operating a hearing aid, in which by switching on, off or switching operations caused disturbing acoustic effects to be avoided.
  • the signal processing in the hearing aid is for this purpose slidably transferred from a first operating state to a second operating state.
  • the sliding transition occurs through parallel signal processing in at least two signal paths of the hearing aid, wherein a signal resulting from the first operating state and a signal resulting from the second operating state are added in alternating weighting. For example, when changing a compression characteristic, a smooth transition can be achieved.
  • the object of the present invention is therefore to propose a signal processing device that can be used for different listening situations together with improved quality.
  • a corresponding signal processing method should be specified.
  • this object is achieved by a signal processing device, in particular for a hearing aid having a first compression device for amplifying an input signal corresponding to a first compression algorithm and a classification device for classifying the input signal with respect to the auditory situation, and at least one second compression device for amplifying the input signal corresponding to at least one second compression algorithm, wherein the input signal can be supplied by the classification device as a function of the classification of the first or second compression device.
  • the invention provides a method for signal processing, in particular in a hearing aid, and amplifying an input signal according to a first compression algorithm and classifying the input signal with respect to the auditory situation and amplifying the input signal according to at least one second compression algorithm, depending on the classification result (either) according to the first or the second compression algorithm is amplified.
  • the optimum compression algorithm or the optimal compression algorithms are thus selected depending on the hearing situation.
  • a situation-dependent parameterization carried out which leads to suboptimal results.
  • the output level always rises continuously with the input level. This is usually the case with AGCi algorithms.
  • the output level is always kept below a maximum level and above a minimum level regardless of the input level.
  • this is achieved by obtaining a gain offset when the level limit is reached is added or subtracted.
  • the offset addition or subtraction can optionally be repeated several times.
  • both compression algorithms may also be more implemented on a single chip. As a result, the hardware complexity does not increase.
  • the switch between both compression algorithms may be performed by the classification device in a sliding manner. This has the advantage that the hearing aid wearer does not or hardly perceives the change.
  • the classification device can have a trigger input via which the compression algorithm can be changed by means of an external signal. This leads to the advantage that a switching of the compression algorithm by a signal processing external trigger signal, z. B. a button on the hearing aid can be done.
  • the signal processing device according to the invention and the corresponding method is preferably used in a hearing device, but can also be used in other hearing devices, such as headsets.
  • An inventive hearing device consists of one or more microphones 1 which are connected to a classifier 2.
  • the classifier analyzes the input signal from the microphone (s) 1 and switches the input signal to a corresponding one of the multiple outputs.
  • One of the outputs is connected here to an AGCi module 3 and the other output to an ADRO module 4.
  • the output signals of the two amplifier modules 3, 4 are optionally further processed and combined in a sum element 5.
  • the output signal of the sum element 5 is finally fed to a loudspeaker 6.
  • the individual elements 2, 3, 4 have been described as separate hardware components. However, these components may also be implemented on a single chip and / or as individual software modules.
  • the classifier 2 generates a control signal with which either an AGCi module or an ADRO module for processing the input signal is addressed.
  • the hearing aid automatically switches, possibly sliding, between the two implemented compression approaches, in order to be able to take advantage of the respective method in every situation.
  • the hearing aid automatically switches, possibly sliding, between the two implemented compression approaches, in order to be able to take advantage of the respective method in every situation.
  • FIG. 2 shows first in the solid line a boosting run of an AGCi. This gain curve is characterized in the present example by 3 compression ratios (slope of the curve). The compression characteristic curve has a continuous course and changes its steepness in the compression knee points K1 and K2.
  • FIG. 3 shows a specific input signal. Its level profile is triangular in the example. After a linear increase, there is a linear drop in the level.
  • the classifier 2 initially sets a situation, for. As speech at rest, where a kind of AGCi compression is advantageous. Thus, the characteristic of FIG. 2 is used, to compress the input signal of FIG. The resulting output signal is shown in FIG. The entire dynamic range between a minimum level Lmin and a maximum level Lmax is not utilized here.
  • the classifier switches to the ADRO compression.
  • the input signal has the level profile of FIG. 3.
  • the output level after ADRO compression is shown in FIG. Accordingly, the output level Lout first increases until the maximum Lmax is reached. Since the input level Lin continues to increase and the output level range is not to be left, an output level reduction is performed by a predetermined value (offset). Due to the further increasing input level Lin, the output level Lout also increases again and again reaches the maximum level Lmax. Here, the level reduction is repeated by the specified offset value again. This reduction can be repeated several times.
  • the output level Lout also decreases until a minimum level Lmin is reached.
  • the output level is raised by a likewise constant value. This may also happen several times if the input level continues to drop. In this way, the entire output level range can be utilized for a subrange of the input level.
  • the two compression algorithms AGCi 3 and ADRO 4 achieve completely different output levels depending on the listening situation.
  • the advantages of different compression approaches can be combined in a single device and their respective advantages in the individual hearing situation can be exploited.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
EP06124535A 2005-12-20 2006-11-22 Traitement du signal pour prothèses auditives à multiples algorithmes de compression Withdrawn EP1802171A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005061000A DE102005061000B4 (de) 2005-12-20 2005-12-20 Signalverarbeitung für Hörgeräte mit mehreren Kompressionsalgorithmen

Publications (1)

Publication Number Publication Date
EP1802171A1 true EP1802171A1 (fr) 2007-06-27

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EP06124535A Withdrawn EP1802171A1 (fr) 2005-12-20 2006-11-22 Traitement du signal pour prothèses auditives à multiples algorithmes de compression

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US (1) US20070140512A1 (fr)
EP (1) EP1802171A1 (fr)
DE (1) DE102005061000B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3783918A1 (fr) * 2019-08-22 2021-02-24 Sonova AG Commande d'une dynamique de volume d'un appareil auditif

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101843118B (zh) * 2007-10-16 2014-01-08 峰力公司 用于无线听力辅助的方法和系统
EP2206362B1 (fr) * 2007-10-16 2014-01-08 Phonak AG Procédé et système pour une assistance auditive sans fil
DE102009004185B3 (de) 2009-01-09 2010-04-15 Siemens Medical Instruments Pte. Ltd. Verfahren zur Signalverarbeitung einer Hörvorrichtung und entsprechende Hörvorrichtung
WO2010133703A2 (fr) 2010-09-15 2010-11-25 Phonak Ag Procédé et système pour fournir à un utilisateur une aide auditive
DE102010041740A1 (de) 2010-09-30 2012-04-05 Siemens Medical Instruments Pte. Ltd. Verfahren zur Signalverarbeitung in einem Hörhilfegerät sowie Hörhilfegerät
DE102012203253B3 (de) * 2012-03-01 2013-03-14 Siemens Medical Instruments Pte. Ltd. Verstärken eines Sprachsignals in Abhängigkeit vom Eingangspegel
US9095708B2 (en) * 2013-03-15 2015-08-04 Cochlear Limited Transitioning operating modes in a medical prosthesis
EP2819436B1 (fr) 2013-06-27 2017-08-23 GN Resound A/S Fonctionnement de prothèse auditive en fonction de la position
US9094769B2 (en) 2013-06-27 2015-07-28 Gn Resound A/S Hearing aid operating in dependence of position
US11438707B2 (en) 2018-05-11 2022-09-06 Sivantos Pte. Ltd. Method for operating a hearing aid system, and hearing aid system
DE102018207343A1 (de) * 2018-05-11 2019-11-14 Sivantos Pte. Ltd. Verfahren zum Betrieb eines Hörsystems sowie Hörsystem
EP4055838A1 (fr) 2019-11-04 2022-09-14 Sivantos Pte. Ltd. Procédé de fonctionnement d'un système auditif et système auditif

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19703228A1 (de) 1997-01-29 1998-07-30 Siemens Audiologische Technik Verfahren zur Verstärkung von Eingangssignalen eines Hörgerätes sowie Schaltung zur Durchführung des Verfahrens
US6104822A (en) 1995-10-10 2000-08-15 Audiologic, Inc. Digital signal processing hearing aid
WO2001076321A1 (fr) * 2000-04-04 2001-10-11 Gn Resound A/S Prothese auditive a classification automatique de l'environnement d'ecoute
US20030072465A1 (en) 2001-10-17 2003-04-17 Eghart Fischer Method for the operation of a hearing aid as well as a hearing aid
US6731767B1 (en) * 1999-02-05 2004-05-04 The University Of Melbourne Adaptive dynamic range of optimization sound processor
WO2004114722A1 (fr) 2003-06-24 2004-12-29 Gn Resound A/S Systeme de prothese auditive binaural a traitement sonore coordonne

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE428167B (sv) * 1981-04-16 1983-06-06 Mangold Stephan Programmerbar signalbehandlingsanordning, huvudsakligen avsedd for personer med nedsatt horsel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6104822A (en) 1995-10-10 2000-08-15 Audiologic, Inc. Digital signal processing hearing aid
DE19703228A1 (de) 1997-01-29 1998-07-30 Siemens Audiologische Technik Verfahren zur Verstärkung von Eingangssignalen eines Hörgerätes sowie Schaltung zur Durchführung des Verfahrens
US6731767B1 (en) * 1999-02-05 2004-05-04 The University Of Melbourne Adaptive dynamic range of optimization sound processor
WO2001076321A1 (fr) * 2000-04-04 2001-10-11 Gn Resound A/S Prothese auditive a classification automatique de l'environnement d'ecoute
US20030072465A1 (en) 2001-10-17 2003-04-17 Eghart Fischer Method for the operation of a hearing aid as well as a hearing aid
WO2004114722A1 (fr) 2003-06-24 2004-12-29 Gn Resound A/S Systeme de prothese auditive binaural a traitement sonore coordonne

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3783918A1 (fr) * 2019-08-22 2021-02-24 Sonova AG Commande d'une dynamique de volume d'un appareil auditif
CN112416287A (zh) * 2019-08-22 2021-02-26 索诺瓦公司 控制听力设备的音量动态
US11343621B2 (en) 2019-08-22 2022-05-24 Sonova Ag Controlling a volume dynamic of a hearing device

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DE102005061000B4 (de) 2009-09-03
DE102005061000A1 (de) 2007-06-21
US20070140512A1 (en) 2007-06-21

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