EP0246970B1 - Hörgerätanordnungen - Google Patents

Hörgerätanordnungen Download PDF

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Publication number
EP0246970B1
EP0246970B1 EP87401130A EP87401130A EP0246970B1 EP 0246970 B1 EP0246970 B1 EP 0246970B1 EP 87401130 A EP87401130 A EP 87401130A EP 87401130 A EP87401130 A EP 87401130A EP 0246970 B1 EP0246970 B1 EP 0246970B1
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EP
European Patent Office
Prior art keywords
signal
sounds
compensation
comprised
frequencies
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
Application number
EP87401130A
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English (en)
French (fr)
Other versions
EP0246970A1 (de
Inventor
Jean-Claude Lafon
Tijani Gharbi
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.)
Universite de Franche-Comte
Original Assignee
Universite de Franche-Comte
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Filing date
Publication date
Application filed by Universite de Franche-Comte filed Critical Universite de Franche-Comte
Priority to AT87401130T priority Critical patent/ATE59260T1/de
Publication of EP0246970A1 publication Critical patent/EP0246970A1/de
Application granted granted Critical
Publication of EP0246970B1 publication Critical patent/EP0246970B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/35—Electric hearing aids using translation techniques
    • H04R25/353—Frequency, e.g. frequency shift or compression

Definitions

  • the invention relates to hearing aid devices intended for deaf people and in which the sounds emitted in at least a portion of the acute spectrum, sounds normally inaudible to said deaf people, are transposed into other "compensating" sounds situated in the low zone. audible of the acoustic spectrum.
  • the object of the invention is, above all, to make the devices of the kind in question such that the sounds transposed by them in the low region of the spectrum include information relating not only to the height and the intensity of the sound signals to be perceived, but also to the tones or laryngeal components of these signals.
  • the hearing aid devices of the above kind also comprise, in a manner known per se, transducer means for transforming the acoustic signals to be processed into electrical signals, means for taking at least one particular section xi of order i, of each of these electrical signals, included in a predetermined range of high frequencies, that is to say corresponding to acute sounds, frequencies between between fi min and fi max, i being an integer between 1 and 3 and increasing in the same direction as the frequencies of the slots considered, means for developing from each of these slots xi a compensation signal Si included in a range of low frequencies, that is to say corresponding to bass sounds, frequencies between Fi min and Fi max, the low ranges corresponding to the different compensation sounds If being distinct from each other, means for adding the s different compensation signals Si thus developed and transduction means for transforming the sum signal thus obtained into a signal applicable to the deaf to be treated so as to be perceptible by him.
  • transducer means for transforming the acoustic signals to be processed into electrical signals
  • the hearing aid devices are characterized in that the means for producing each compensation signal Si comprise means for multiplying the corresponding signal slice x i by a signal x 'i which is either identical to this signal slice x; or else deduced from the latter by amplitude equalization, so as to form a product signal Xi, and means for taking, from this product signal Xi, using a bandpass filter, the portion of said signal-product whose low frequency is in the frequency range Fi min to Fi m ax, portion which constitutes the compensation signal If desired.
  • the product signals Xi considered comprise such portions at low frequency due to the properties relating to the products of the trigonometric lines.
  • each of the signals x can be broken down into a Fourier series, i.e. a multitude of sinusoidal components of the type a cos 2 ⁇ ft + b sin 2 ⁇ ft (1 formula in which and b denote constants and f, the frequency of oscillation of the component considered, frequency between the two limits fi min and fi max.
  • a second component understood by the same signal xi and defined by the formula a 'cos 2 ⁇ f't + b' sin 2 ⁇ f't (2), in which a 'and b' denote two other constants and f, the frequency of this second component, understood as f between the two limits fi min and fi max, and if we multiply these two components one by the other, the product shows not only terms in cos 2 ⁇ (f + f ') t and sin 2 ⁇ (f + f) t but also terms in cos 2 ⁇ (f + f') t and sin 2 ⁇ (ff) t.
  • the product signal Xi shows sinusoidal components oscillating at almost all frequencies of the type ff corresponding to differences of any two frequencies included in the range of fi min at fi max.
  • the invention includes, apart from these main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.
  • Figure 1 of this drawing is a diagram of a hearing aid device established according to the invention.
  • Figure 2 is a triple sonogram for understanding the interest of the invention.
  • Each of these low frequencies is both greater than F o max and included in the range of frequencies audible by the deaf person to be processed.
  • each time Fi max ⁇ F (i + 1) min is chosen.
  • the amplitude equalization indicated above consists in making the coefficients a, b, a 'and b' of formulas (1) and (2) above equal to 1.
  • the compensation signals Si can be amplified so as to take account of the fact that the range of low frequencies which defines the filter band of each of them extends on only a small portion of the entire acoustic spectrum: this is how the range of said range is for example of the order of 200 to 500 Hz while the acoustic spectrum considered is of the order of 8000 Hz .
  • the compensation signals Si produced by the multiplication and filtering mentioned above can only be harmonics of the signals x; who gave birth to them.
  • the high sampling frequencies of the two sections xi and x 2 are then advantageously included, respectively, in the range 1500 Hz (f 1 min) to 3500 Hz (fi max) and in the range 5000 Hz (f 2 min) to 7000 Hz (f 2 max).
  • the compensation sounds Si and S 2 are for example included respectively in the range 800 Hz (Fi min) at 1000 Hz (Fi max) and in the range 1050 Hz (F 2 min) at 1200 Hz (F 2 max ), which corresponds to a deep deafness for which the deaf is able to perceive only the sounds whose frequency is lower than 1200 Hz.
  • the compensation sounds Si and S 2 sounds respectively included in the range 800-1200 Hz and in the range 1250-1900 Hz.
  • the top sonogram in Figure 2 is for normal hearing.
  • the middle sonogram b corresponds to what is heard by a deaf person not equipped with a prosthesis, that is to say to the portion, of the acoustic message considered, which is filtered above 800 Hz.
  • the bottom sonogram c corresponds to what a patient affected by severe deafness means equipped with a prosthesis according to the invention.
  • the vertical stripes represent the transients of the laryngeal components of the sounds, or "timbres" of these sounds.
  • the invention makes it possible to incorporate into the artificially reconstituted bass sounds perceptible by the deaf, not only the “whistles” or acute components of the speech (corresponding in particular to the sounds in "z” or in “s”), but also the timbres of the vowels.
  • a hearing aid device is obtained whose constitution, functioning and advantages (in particular that of conferring automatically and instantly on the grave artificial sounds reconstituted the temporal characteristics or " timbres "natural sounds to be perceived) result sufficiently from the above.
  • the invention is in no way limited to those of its modes of application and embodiments which have been more especially envisaged; on the contrary, it embraces all variants, in particular those in which the hearing aid devices considered would be arranged so as to correspond to each sound processed a signal still perceptible by the deaf to assist, but not necessarily acoustic, in particular a signal impulse applicable to said deaf person in any desirable manner perceptible to him, this application being carried out for example electrically on his auditory nerve, or even mechanically on his skin using an appropriate vibrator.

Landscapes

  • 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)
  • Circuit For Audible Band Transducer (AREA)
  • Electrotherapy Devices (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Stereophonic System (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Adornments (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Claims (4)

1. Hörgerätanordnung, die Wandler (1) zum Umwandeln der zu behandelnden akustischen Signale A in elektrische Signale E, Mittel (5i) zum Ableiten wenigstens eines besonderen Abschnittes xi mit der Ordnung i von jedem der elektrischen Signale, der in einem vorbestimmten Bereich mit erhöhten, d.h. hohen Tonlagen entsprechenden Frequenzen zwischen fi min und fi max liegt, wobei i eine ganze Zahl zwischen 1 und 3 ist und sich in dem gleichen Maß erhöht wie die Frequenzen der betrachteten Abschnitte, Einrichtungen zum Ausarbeiten eines Kompensationssignals Si aus jedem der Abschnitte xi, das in einem Bereich mit niedrigen, d.h. tiefen Tonlagen entsprechenden Frequenzen zwischen Fi min und Fi max liegt, wobei die unterschiedlichen Kompensationstönen Si entsprechenden niedrigen Bereiche voneinander verschieden sind, Einrichtungen (3) zum Addieren der verschiedenen so ausgearbeiteten Kompensationssignale S;, und Wandler (4) zum Umwandeln der so erhaltenen Summe der Signale in ein Signal B enthält, das an einen zu behandelnden Schwerhörigen anlegbar und von diesem wahrnehmbar ist, dadurch gekennzeichnet, daß die Einrichtungen zum Ausarbeiten jedes Kompensationssignals Si Mittel (6i) zum Vervielfachen des entsprechenden Signalabschnittes x; mit einem Signal x' i, das entweder mit dem Signalabschnitt x; identisch oder von diesem durch Abgleichen der Amplitude abgeleitet ist, um ein Signalprodukt Xi zu bilden, und Mittel enthalten, um in diesem Signalprodukt Xi mittels eines Bandpassfilters (7i) den Abschnitt des Signalproduktes abzunehmen, dessen niedrige Frequenz in den Frequenzbereich Fi min bis F; max liegt, bei dem es sich um den Bereich handelt, der das gewünschte Kompensationssignal Si bildet.
2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Anzahl der Signalabschnitte x; mit erhöhter Frequenz, die von den zu behandelnden elektrischen Signalen abgeleitet werden, 2 (zwei) beträgt, wobei der erste Abschnitt eine zwischen 1500 und 3500 Hz und der zweite Abschnitt eine zwischen 5000 und 7000 Hz liegende Frequenz hat.
3. Anordnung nach Anspruch 2, dadurch gekennzeichnet, daß die Frequenzen der Bereiche mit niedrigen Frequenzen, die für die Kompensationstöne S1 und S2 ausgewählt werden, bei 800 bis 1000 Hz bzw. 1050 bis 1200 Hz liegen.
4. Anordnung nach Anspruch 2, dadurch gekennzeichnet, daß die Frequenzen der Bereiche mit niedrigen Frequenzen für die Kompensationstöne S1 und S2 bei 800 bis 1200 Hz bzw. 1250 bis 1900 Hz liegen.
EP87401130A 1986-05-23 1987-05-20 Hörgerätanordnungen Expired - Lifetime EP0246970B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401130T ATE59260T1 (de) 1986-05-23 1987-05-20 Hoergeraetanordnungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8607408A FR2598909B1 (fr) 1986-05-23 1986-05-23 Perfectionnements aux dispositifs de prothese auditive
FR8607408 1986-05-23

Publications (2)

Publication Number Publication Date
EP0246970A1 EP0246970A1 (de) 1987-11-25
EP0246970B1 true EP0246970B1 (de) 1990-12-19

Family

ID=9335565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401130A Expired - Lifetime EP0246970B1 (de) 1986-05-23 1987-05-20 Hörgerätanordnungen

Country Status (5)

Country Link
US (1) US4843623A (de)
EP (1) EP0246970B1 (de)
AT (1) ATE59260T1 (de)
DE (1) DE3766755D1 (de)
FR (1) FR2598909B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014319A (en) * 1988-02-15 1991-05-07 Avr Communications Ltd. Frequency transposing hearing aid
US6577739B1 (en) * 1997-09-19 2003-06-10 University Of Iowa Research Foundation Apparatus and methods for proportional audio compression and frequency shifting
AU2005333866B2 (en) * 2005-06-27 2009-04-23 Widex A/S Hearing aid with enhanced high frequency reproduction and method for processing an audio signal
DK1885156T3 (da) * 2006-08-04 2013-07-29 Siemens Audiologische Technik Høreapparat med en audiosignalgenerator
CN103250209B (zh) * 2010-12-08 2015-08-05 唯听助听器公司 改善音频重现的助听器和方法
US9113271B2 (en) * 2011-07-14 2015-08-18 Phonak Ag Method for extending a frequency range of an input signal of a hearing device as well as a hearing device
WO2013067261A1 (en) * 2011-11-04 2013-05-10 Med-El Elektromedizinische Geraete Gmbh Transpositional acoustic frequency range in eas patients
EP3128765A1 (de) * 2015-08-07 2017-02-08 Tain-Tzu Chang Verfahren zum verarbeiten eines sound tracks
KR102494080B1 (ko) * 2016-06-01 2023-02-01 삼성전자 주식회사 전자 장치 및 전자 장치의 사운드 신호 보정 방법
TWI662544B (zh) * 2018-05-28 2019-06-11 塞席爾商元鼎音訊股份有限公司 偵測環境噪音以改變播放語音頻率之方法及其聲音播放裝置
CN110690903A (zh) * 2019-09-18 2020-01-14 南京中感微电子有限公司 一种电子设备及音频模数转换方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2150364A (en) * 1937-07-31 1939-03-14 Bell Telephone Labor Inc Signaling system
FR54450E (fr) * 1946-02-21 1950-05-02 Mecaniques De Vaucouleurs Atel Appareil pour le montage des pièces à usiner sur les tables de machines outils
BE643118A (de) * 1963-02-14 1964-05-15
GB1340105A (en) * 1971-06-08 1973-12-12 Nat Res Dev Aids for deaf persons
FR2494988B1 (fr) * 1980-11-28 1985-07-05 Lafon Jean Claude Perfectionnements aux dispositifs de prothese auditive
FR2577739B1 (fr) * 1985-02-19 1992-08-21 Perez Thomas Dispositif de perception et d'analyse des sons par la voie tactile ou optique

Also Published As

Publication number Publication date
FR2598909A1 (fr) 1987-11-27
ATE59260T1 (de) 1991-01-15
FR2598909B1 (fr) 1988-08-26
EP0246970A1 (de) 1987-11-25
DE3766755D1 (de) 1991-01-31
US4843623A (en) 1989-06-27

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