CN101312602A - Hearing device with highly reliable earpiece control and corresponding method - Google Patents
Hearing device with highly reliable earpiece control and corresponding method Download PDFInfo
- Publication number
- CN101312602A CN101312602A CNA2008101314532A CN200810131453A CN101312602A CN 101312602 A CN101312602 A CN 101312602A CN A2008101314532 A CNA2008101314532 A CN A2008101314532A CN 200810131453 A CN200810131453 A CN 200810131453A CN 101312602 A CN101312602 A CN 101312602A
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- China
- Prior art keywords
- hearing
- control signal
- aid
- frequency band
- aid device
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Classifications
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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
- H04R25/55—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
- H04R25/552—Binaural
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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
- H04R25/353—Frequency, e.g. frequency shift or compression
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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
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/49—Reducing the effects of electromagnetic noise on the functioning of hearing aids, by, e.g. shielding, signal processing adaptation, selective (de)activation of electronic parts in hearing aid
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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
- H04R25/55—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
- H04R25/554—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 using a wireless connection, e.g. between microphone and amplifier or using Tcoils
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuit For Audible Band Transducer (AREA)
- Transceivers (AREA)
Abstract
Power saving control on an earphone is performed free from interference basically when performing wireless data transmission with other audiphones. Therefore, the invention relates to hearing aids, particularly to audiphones, comprising a transmitting device for wireless data transmission; a loudhailer; and a control device for controlling the signals by the loudhailer, wherein the frequency spectrum of the control signal in the range of basic frequency has a main recess (E). 'Noise shaping' is realized through the earphone control signal modulated through pulse density.
Description
Technical field
The present invention relates to a kind of hearing-aid device, it has the transmission unit that carries out wireless data transmission in the dominant frequency band, loud speaker and with the control device of control signal control loudspeaker.In addition, the invention still further relates to a kind of corresponding method that is used to operate hearing-aid device.Term " hearing-aid device " refers in particular to hearing aids, headphone, receiver here and other can wear overhead equipment.
Background technology
Hearing aids is to be used for to weighing the portable hearing-aid device that the hearer provides hearing to help.For satisfying numerous individual demand, the hearing aids of different structure form is provided, as ear-level hearing aid (Hinter-dem-Ohr-Hoergeraete, HdO) and inner ear type hearing aids (In-dem-Ohr-Hoergeraete, IdO), for example also have external ear formula hearing aids or duct-type hearing aids (Kanal-Hoergeraete, CIC).The hearing aids that is exemplified is worn on the external ear or in duct.But also provide ossiphone, implantable or vibrating tactile hearing aids on this external market.At this or mechanically or in electric mode impaired hearing is stimulated.
The significant components of hearing aids comprises input translator, amplifier and output translator.Input translator is sound receiver (for example microphone) and/or electromagnetic receiver (for example induction coil) normally.Output translator is realized as electroacoustic transducing device (for example Microspeaker) or as electric mechanical converter (for example osophone) mostly.Amplifier is integrated in the signal processing unit usually.This theory structure has been shown in the example of the ear-level hearing aid in Fig. 1.One or more microphone 2 of packing in the hearing aids shell 1 after being worn over ear, be used to receive from around sound.Be integrated in equally that 3 pairs of microphone signals of signal processing unit in the hearing aids shell 1 are handled and with its amplification.The output signal of signal processing unit 3 is transferred to the loud speaker or the earphone 4 of output sound signal.This sound is transferred to the eardrum of hearing aid wearer by be fixed on sound flexible pipe in the duct with the ear plastic in case of necessity.By being integrated in 5 pairs of hearing aidss of battery and particularly signal processing unit 3 power supplies in the hearing aids shell 1 equally.
For loud speaker or the earphone of controlling hearing aids, often use for example pulse density modulated (PDM) or pulse width modulation (PWM).Digital control have such advantage, promptly can save the digital to analog converter level in digital deaf-aid.Digital control circuit has significantly high efficient than analog control circuit in addition.In contrast, it is little that analog control circuit disturbs, that is it takies a frequency spectrum that is limited in voice signal with seldom harmonic component.Yet the very strong harmonic wave that occurs can disturb the wireless transmission of the data between the hearing aids and the transmission between hearing aids and the outside appurtenances (remote controller, wireless programming equipment, wireless relay apparatus etc.) in digital control.
A kind of possible solution to this problem can be following compromise proposal: simulation ground control earphone in having the hearing aids of wireless transmission, and in not having the hearing aids of radio function, implement the digital control of a kind of economize on electricity.Yet the hearing aids that has wireless transmission thus can not be benefited by the numerically controlled advantage of economize on electricity.
Summary of the invention
Therefore the technical problem to be solved in the present invention is, can, particularly also provide digital control to the economize on electricity of the loud speaker of this hearing-aid device for the hearing-aid device with digital form work.A kind of corresponding method that is used to operate hearing-aid device is provided in addition.
According to the present invention, above-mentioned technical problem solves by a kind of hearing-aid device, this hearing-aid device has transmitting device, the loud speaker of wirelessly transmitting data in the dominant frequency band and controls the control device of this loud speaker by control signal, wherein, the frequency spectrum of described control signal has main depression in the scope of this dominant frequency band.
In addition, according to the present invention, a kind of method of operating hearing-aid device is provided, this method is controlled the loud speaker of hearing-aid device by the wireless data transmission in the dominant frequency band and with control signal and is operated hearing-aid device, wherein, the frequency spectrum of described control signal has main depression in the scope of this dominant frequency band.
Signal by will being used for transfer of data and the signal that is used for control loudspeaker separately, almost no longer produce the phase mutual interference in frequency range, make the hearing-aid device that designs for wireless data transmission also can digitally control the earphone or the loud speaker of inside.
The control signal of preferred control device is pulse density modulated or pulse width modulation.Can need not big signal processing expense ground thus and control the induction loudspeaker that works as low pass filter with digital signal processing circuit.
Transfer of data by transmitting device can be carried out in a plurality of frequency bands with wide band system, and the frequency spectrum of control signal can have main depression respectively in the scope of each frequency band.Principle of the present invention thus also can be used for the wideband transmit of high data rate.
In addition, transmitting device can have band pass filter, and it only allows to be positioned at the dominant frequency band basically or is positioned at the dominant frequency band and the frequency component of the multiple scope of dominant frequency band is passed through.Can also improve the anti-interference of wireless transmission thus.
In a special execution mode, hearing-aid device of the present invention can be configured to the inner ear type hearing aids, though this power consumption and can for the domination the place extremely restricted.Because available place is very little, the earphone that is generally the magnetosonic converter is very near apart from receiving coil.In addition, under the situation of inner ear type hearing aids, the position all is unique in each hearing aids with being oriented in.The earphone big interference signal of in receiving coil, more or less inducting under each situation.Usually make the remarkable variation of signal to noise ratio thus.Can improve the signal to noise ratio of this difference by improving transmitted power, but this can only reach by very big energy requirement.Therefore solution of the present invention is favourably welcome, and this scheme is that the control signal that is used for earphone is separated with the transmission signals that is used for wireless data transmission on frequency spectrum.
Corresponding to another execution mode, according to the present invention, hearing assistance system with two hearing-aid devices is provided, each of these two hearing-aid devices all has the structure of above-mentioned hearing-aid device, wherein the transmitting device of two hearing aidss can carry out the double-direction radio transfer of data, and transfer of data in one direction with carry out on different frequency bands in the transfer of data on the other direction.Real two-way connection with simultaneous directional transmissions can be provided thus.
Description of drawings
Below describe the present invention with reference to the accompanying drawings in detail, in the accompanying drawings:
Fig. 1 illustrates the theory structure according to the hearing-aid device of prior art;
Fig. 2 illustrates according to hearing aid device system of the present invention;
Fig. 3 illustrates the PDM time signal of the voltage on the earphone;
Fig. 4 illustrates the fragment of an amplification of the PDM time signal of Fig. 3;
Fig. 5 illustrates the PDM frequency spectrum of the signal of Fig. 3; And
Fig. 6 illustrates the PDM frequency spectrum of Fig. 5, connects the same passband curve of the frequency filter of coupling ideally.
Embodiment
The embodiment that the following describes represents preferred implementation of the present invention.
Fig. 2 schematically shows a hearing aid device system with two hearing aidss 10 and 11.The structure of two hearing aidss 10,11 is identical.Yet for clarity sake only in hearing aids 10, express important components of the present invention.The center cell of IdO hearing aids 10 is signal processing unit control units 12 in other words, uses battery 13 to its power supply.The output signal of control unit 12 is used to control earphone 14, and this earphone ordinary construction is the magnetosonic converter.In addition, control unit 12 also is controlled at this and is used for second hearing aids 11 is carried out the transmission unit 15 of transmitted in both directions.These transmission unit 15 usefulness coil symbols are represented, but it can also comprise other transmission parts.
From Fig. 2 as seen, electronic unit spatially is provided with very close to each otherly in IdO hearing aids 10.Particularly earphone 14 and transmission unit 15 also very closely are set together, and make unavoidable real estate give birth to reciprocal influence and interference.
Fig. 3 represents typical PDM control signal, and this signal of control unit 12 usefulness is controlled earphone 14 in time.To be hidden in the impulse density to the earphone information transmitted.Fig. 4 illustrates a fragment of this signal with enlarged drawing.The density of pulse changes in the way you want.
Earphone 14 has special inductance characteristics.Therefore temporal PDM voltage signal shown in Figure 3 causes the current curve that dots in the figure in earphone.
Figure 5 illustrates the frequency spectrum of the PDM voltage signal of Fig. 3.It is made up of camber line basically, and these camber lines continue each other periodically, and their amplitude reduces according to function sin x/x owing to the rectangular shape of PDM pulse.In the specific region of this frequency spectrum, promptly between two camber lines, promptly so-called " free dead zone " depression E appear, in frequency spectrum.That is to say and interference signal in this dead zone, do not occur or occur hardly.So only have useful signal N or useful signal component N ' there.Can description below the formation of depression E (being also referred to as " notch "): the fixing pulse duration Tp that selects the PDM signal, and occurring among the nxTp at interval at a fixed time.For the audio signal of nature, the Distribution Statistics of positive pulse and negative pulse equates.Frequency 1/ (2Tp) and its integer multiple frequency are located appearance with substantially identical amplitude 0 ° in phase place and 180 ° thus.This causes on purpose removing the signal in frequency nx1/ (2Tp) environs.This removal causes above-mentioned depression E " notch " in other words.Produce camber line shape interference signal component S therebetween.
This moment, basic thought of the present invention was to make the operating frequency of digital earphone control device and wireless transmitting system to be complementary.Specifically, promptly attempt the earphone noise part of disturbing is removed from the employed frequency band of wireless data transmission.This by selecting the operating frequency of PDM modulator, makes depression E just in time be positioned at the transmission frequency of wireless transmission or the scope of its multiple at this, comes the corresponding interference spectrum that advantageously is shaped (" noise shaped ") to realize.Wireless transmission only is subjected to slight influence thus, and has kept the advantage of digital earphone control device.
The free space of the interference sections in the employed frequency range of wireless data transmission can replenish by other known " noise shaped " method.Therefore for example can move the low frequency range of noise section to the higher direction of frequency in known manner from audio signal.Use method this and that other are known, can optimize the width and the shape of depression or " notch ".
By using band pass filter that wireless transmission is partly carried out signal processing, make that the frequency in the bandwidth that only allows to use is passed through in the clear in wireless transmission, can further improve the anti-interference of wireless transmission with respect to the earphone control device.In Fig. 6, show the filter function F of such band pass filter together with the PDM frequency spectrum of example signal.When the feature of the feature (steepness at filter edge, the quality factor of filter) of band pass filter and " noise shaped " matched each other, the improvement of anti-interference was effective especially.
In the example of Fig. 5 with fixing frequency interval " notch " appears.Only one of them is used for wireless data transmission under the simplest situation.But, also wireless transmission can be divided on a plurality of sub-frequency ranges for application with big bandwidth requirement.This a little frequency range should be positioned at other " notch " of the PDM control signal that is used for earphone like this.About anti-interference, here the feature of band pass filter also should be complementary each other with the feature of " noise shaped ".This for example can realize that the logical scope of the band of this comb filter is mutually tuning with " notch " with special comb filter.
Obtain smooth, low background-noise level in the filter back, therefrom little useful signal also can detect well.Consequently enlarged the possible transmission range of wireless transmission.Interchangeable is can access higher message transmission rate under the identical situation of transmission range.
Illustrate above,, can carry out the transmission of the bandwidth enhancing of audio signal or programming data for using a plurality of frequency range applications.Also can use more frequency band to carry out transmitted in both directions simultaneously where necessary by direction being divided on the different frequency ranges.
Claims (10)
1. a hearing-aid device (10) has:
Transmitting device (15) is used for carrying out wireless data transmission in the dominant frequency band;
Loud speaker (14); With
Control device (12) is used to utilize control signal to control described loud speaker (14);
It is characterized in that,
The frequency spectrum of described control signal has main depression in the scope of this dominant frequency band.
2. hearing-aid device according to claim 1, wherein, the control signal of described control device (12) is a pulse density modulated.
3. hearing-aid device according to claim 1 and 2 wherein, carry out transfer of data with wide band system by described transmitting device (15) in a plurality of frequency bands, and the frequency spectrum of described control signal has main depression respectively in the scope of each frequency band.
4. each described hearing-aid device in requiring according to aforesaid right, wherein, described transmitting device (15) has band pass filter, and the frequency component that this band pass filter only allows to be positioned at the dominant frequency band basically or is positioned at the scope of dominant frequency band and multiple thereof is passed through.
5. each described hearing-aid device in requiring according to aforesaid right, wherein, this hearing-aid device is constructed to in-the-ear hearing aid.
6. hearing assistance system with two hearing-aid devices (10,11), these two hearing-aid devices (10,11) have the structure according to each described hearing-aid device in the claim 3 to 5 respectively, wherein, the transmitting device (15) of these two hearing-aid devices (10,11) can carry out the double-direction radio transfer of data, and transfer of data in one direction with carry out in different frequency bands in the transfer of data on another direction.
7. method that is used to operate hearing-aid device (10,11), wherein:
In the dominant frequency band, carry out wireless data transmission; With
Control the loud speaker (14) of this hearing-aid device with control signal;
It is characterized in that,
The frequency spectrum of described control signal has main depression (E) in the scope of dominant frequency band.
8. method according to claim 7, wherein, described control signal is a pulse density modulated.
9. according to claim 7 or 8 described methods, wherein, in a plurality of frequency bands, carry out described transfer of data, and the frequency spectrum of described control signal has main depression (E) respectively in the scope of each frequency band with wide band system.
10. according to each described method in the claim 7 to 9, wherein, utilize band pass filter to being used for the signal filtering of described transfer of data, this band pass filter only allows to be positioned at the dominant frequency band basically or is positioned at the dominant frequency band and the frequency component of multiple scope is passed through.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710018121 DE102007018121B4 (en) | 2007-04-16 | 2007-04-16 | Hearing device with low-noise handset control and corresponding method and hearing system |
| DE102007018121.5 | 2007-04-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101312602A true CN101312602A (en) | 2008-11-26 |
| CN101312602B CN101312602B (en) | 2012-04-25 |
Family
ID=39535305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101314532A Active CN101312602B (en) | 2007-04-16 | 2008-04-16 | Hearing device with highly reliable earpiece control and corresponding method |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1983800B1 (en) |
| JP (1) | JP5322485B2 (en) |
| CN (1) | CN101312602B (en) |
| AU (1) | AU2008201690B2 (en) |
| DE (1) | DE102007018121B4 (en) |
| DK (1) | DK1983800T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355925A (en) * | 2009-03-16 | 2012-02-15 | 耳蜗有限公司 | Transcutaneous modulated power link for a medical implant |
| CN113081765A (en) * | 2021-04-15 | 2021-07-09 | 四川千里倍益康医疗科技股份有限公司 | Electric massager and PWM-based skeleton identification method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010039303A1 (en) * | 2010-08-13 | 2012-02-16 | Siemens Medical Instruments Pte. Ltd. | Method for reducing interference and hearing device |
| DE102021200642B3 (en) | 2021-01-25 | 2022-03-17 | Sivantos Pte. Ltd. | hearing aid |
| WO2024004925A1 (en) * | 2022-06-28 | 2024-01-04 | ピクシーダストテクノロジーズ株式会社 | Signal processing device, earphone equipped with microphone, signal processing method, and program |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2212131A1 (en) * | 1996-08-07 | 1998-02-07 | Beltone Electronics Corporation | Digital hearing aid system |
| JP2904272B2 (en) * | 1996-12-10 | 1999-06-14 | 日本電気株式会社 | Digital hearing aid and hearing aid processing method thereof |
| US6605991B2 (en) * | 2001-08-30 | 2003-08-12 | Motorola, Inc. | Circuitry for creating a spectral null in a differential output switching amplifier and method therefor |
| DE10245556B3 (en) * | 2002-09-30 | 2004-04-22 | Siemens Audiologische Technik Gmbh | Hearing aid or hearing aid system with a clock generator and method for their operation |
| DE10304648B3 (en) * | 2003-02-05 | 2004-08-19 | Siemens Audiologische Technik Gmbh | Device and method for communicating hearing aids |
| US7289568B2 (en) * | 2003-11-19 | 2007-10-30 | Intel Corporation | Spectrum management apparatus, method, and system |
| EP1763871A1 (en) * | 2004-06-28 | 2007-03-21 | Koninklijke Philips Electronics N.V. | Wireless audio |
| US7529378B2 (en) * | 2004-11-12 | 2009-05-05 | Phonak Ag | Filter for interfering signals in hearing devices |
| DE602005008776D1 (en) * | 2005-01-17 | 2008-09-18 | Widex As | DEVICE AND METHOD FOR OPERATING A HEARING DEVICE |
| JP2006217088A (en) * | 2005-02-01 | 2006-08-17 | Sharp Corp | Auditory transmission system |
| DE602006004016D1 (en) * | 2006-05-24 | 2009-01-15 | Phonak Ag | Hearing aid system and method for its operation |
-
2007
- 2007-04-16 DE DE200710018121 patent/DE102007018121B4/en active Active
-
2008
- 2008-03-28 DK DK08103047.0T patent/DK1983800T3/en active
- 2008-03-28 EP EP08103047.0A patent/EP1983800B1/en active Active
- 2008-04-15 JP JP2008105561A patent/JP5322485B2/en active Active
- 2008-04-16 AU AU2008201690A patent/AU2008201690B2/en not_active Ceased
- 2008-04-16 CN CN2008101314532A patent/CN101312602B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355925A (en) * | 2009-03-16 | 2012-02-15 | 耳蜗有限公司 | Transcutaneous modulated power link for a medical implant |
| CN113081765A (en) * | 2021-04-15 | 2021-07-09 | 四川千里倍益康医疗科技股份有限公司 | Electric massager and PWM-based skeleton identification method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DK1983800T3 (en) | 2017-03-27 |
| AU2008201690A1 (en) | 2008-10-30 |
| EP1983800A3 (en) | 2009-10-28 |
| CN101312602B (en) | 2012-04-25 |
| JP2008271549A (en) | 2008-11-06 |
| EP1983800A2 (en) | 2008-10-22 |
| EP1983800B1 (en) | 2016-12-14 |
| DE102007018121B4 (en) | 2012-12-06 |
| JP5322485B2 (en) | 2013-10-23 |
| AU2008201690B2 (en) | 2010-01-28 |
| DE102007018121A1 (en) | 2008-10-30 |
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Address after: Singapore City Patentee after: SIVANTOS PTE LTD. Address before: Singapore Singapore Patentee before: Siemens Medical Instr Pte Ltd. |
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