WO2014125179A1 - Method for generating a random noise equivalent to tinnitus - Google Patents

Method for generating a random noise equivalent to tinnitus Download PDF

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Publication number
WO2014125179A1
WO2014125179A1 PCT/FR2014/000085 FR2014000085W WO2014125179A1 WO 2014125179 A1 WO2014125179 A1 WO 2014125179A1 FR 2014000085 W FR2014000085 W FR 2014000085W WO 2014125179 A1 WO2014125179 A1 WO 2014125179A1
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Prior art keywords
noise
tinnitus
envelope
power
frequency
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PCT/FR2014/000085
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French (fr)
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WO2014125179A8 (en
Inventor
Xavier Carriou
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Xavier Carriou
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Publication of WO2014125179A1 publication Critical patent/WO2014125179A1/en
Publication of WO2014125179A8 publication Critical patent/WO2014125179A8/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/12—Audiometering
    • A61B5/128—Audiometering evaluating tinnitus

Definitions

  • the invention relates to a method for creating noise for a tinnitus test
  • Tinnitus is a noise perceived by an individual without this noise outside his body.
  • Subjective tinnitus is extremely difficult to test and to quantify because the subject can not express what he hears: bee, pressure cooker, train, machinery, birds ...
  • the invention overcomes these disadvantages.
  • the method consists of creating a computer algorithm that will generate a noise through the audio interface of the practitioner's computer during the examination in his medical office, this noise is heard by the individual tested in free field by means of loudspeakers or through a headset to differentiate the ear " right from the left ear.
  • the algorithm is based on the creation of two frequency envelopes containing a random noise. Each of these 2 envelopes are contiguous
  • the noise consists only of one of the two envelopes.
  • Each frequency envelope ranging from the simple vertical line is pure to a filled rectangle (noise band), all types of envelope are conceivable but in a preferred form the creation of each envelope of noise is limited by a curve type X power Lambda or Lambda is to be defined by the operator as the curvature coefficient of the curve.
  • a curve type X power Lambda or Lambda is to be defined by the operator as the curvature coefficient of the curve.
  • the envelope of the engraved strip may be different from the envelope of the acute band, both in terms of the curve, the slope and the frequency width for each of the two bands.
  • the creation of random noise is logarithmic in frequency to resemble the auditory sensation. But in another non-preferential form it can be linear
  • the creation of the random noise is logarithmic in power, to be related to the auditory sensation. But in another form it can be linear.
  • This method of decomposing tinnitus into two zones on either side of the maximum frequency makes it possible to create the noise heard by the patient.
  • the audiogram shows a scotoma or notch in the hearing loss.
  • the frequency corresponding to the hollow and if the loss is extremely sharp 40 db on an octave for example, the operator chosen for the severe zone 1 has a very steep slope on a narrow bandwidth and in the zone acute make a band wider and relatively flat to match the flat but important loss on the treble.
  • the sound emitted is therefore characterized by the slopes corresponding to those of the hearing loss.
  • the software algorithm also allows this operation.
  • the noise emitted pulsed can also verify the presence of an objective tinnitus if it is synchronous to the pulse.
  • test noise equivalent to tinnitus is thus defined by the frequency of the peak, the envelope of the severe zone, its band, its curvature and its slope, the envelope of the acute zone its band, its curvature, and its slope. , the power emitted being the result of the power of these two zones.
  • the power of tinnitus is equal to the power of test noise equivalent to tinnitus minus the power of the auditory threshold in the same bandwidth.
  • the power is calculated in relative dB.
  • test noise thus defined can be reproduced by a microprocessor specifically designed to recreate the noise equivalent to tinnitus following the same algorithm or by reproducing the test noise directly in a hearing aid.
  • the envelope and the power of the noise being quantified a low level overcorrection corresponding to the envelope and the power, can thus be integrated into a hearing aid allowing it.
  • the method consists in emitting a random noise composed of 2 frequency envelopes contiguous at their highest frequencies, the assembly being intended to produce a test noise to compare it with the tinnitus perceived by an individual and thus to produce an equivalent noise. to tinnitus.
  • the resulting noise is defined by its power as well as the minimum frequency, the maximum frequency, the slope and the curvature of each envelope.

Abstract

The invention concerns a method for creating noise for a tinnitus test. According to the invention, tinnitus (noise heard only by the subject) can consist of a noise composed of two contiguous frequency envelopes on a maximum frequency. The method consists of creating, by means of a computer algorithm, the same type of sound as that which is heard, so as to quantify and qualify the tinnitus. The noise obtained in this way can be transmitted in order to test tinnitus. Application to tinnitus tests

Description

PROCEDE DE GENERATION D'UN BRUIT ALEATOIRE EQUIVALENT A UN ACOUPHENE  METHOD FOR GENERATING RANDOM NOISE EQUIVALENT TO ACOUPHENES
L'invention concerne un procédé de création de bruit pour un test d'acouphènes The invention relates to a method for creating noise for a tinnitus test
L'acouphèrie est un bruit perçu par un individu sans que ce bruit n'existe hors de son corps. Il existe deux grandes catégories d'acouphènes : les acouphènes objectifs que nous pourrions entendre si nous placions un microphone à la sour-. ce du bruit (battement du pouls) et les acouphènes subjectifs dus à un disfonctionnement des cellules cillées de l'organe de corti ou des neurones du nerf auditif jusqu'au cerveau qui émettent un influx nerveux, celui-ci donnant l'impression au sujet d'entendre un bruit. L'acouphène subjectif est excessive^ ment difficile à tester et à quantifier car le sujet n'arrive pas à exprimer ce qu'il entend : abeille, cocotte minute, train, machinerie, oiseaux ... Les générateurs existants pour créer des bruits tests sont basés sur le bruit à large bande muni de filtre mais le patient n'arrive jamais à retrouver son propre acouphène dans les sons proposés par l'opérateur, de plus les générateurs étaient analogiques et les bruits générés étaient loin du résultat voulu. Avec l'informatique des bruits ont été enregistrés mais là encore il était impossible d'avoir un bruit de qualité et en continu . Tinnitus is a noise perceived by an individual without this noise outside his body. There are two main categories of tinnitus: objective tinnitus that we could hear if we placed a microphone at the source. noise (pulse beat) and subjective tinnitus due to malfunctioning of the hair cells of the corti organ or neurons of the auditory nerve to the brain that emit a nerve impulse, the latter giving the impression to the subject to hear a sound. Subjective tinnitus is extremely difficult to test and to quantify because the subject can not express what he hears: bee, pressure cooker, train, machinery, birds ... Existing generators to create test noises are based on broadband noise with filter but the patient never manages to find his own tinnitus in the sounds proposed by the operator, moreover the generators were analog and the generated noises were far from the desired result. With the computer noises were recorded but again it was impossible to have a sound quality and continuously.
L'invention permet de remédier à ces inconvénients. The invention overcomes these disadvantages.
Le procédé consiste à créer un algorithme informatique qui générera un bruit au travers de l'interface audio de l'ordinateur du praticien lors de l'examen dans son cabinet médical, ce bruit est entendu par l'individu testé en champ libre grâce à des hauts parleurs ou au travers d'un casque pour différencier l'oreille" droite de l'oreille gauche. The method consists of creating a computer algorithm that will generate a noise through the audio interface of the practitioner's computer during the examination in his medical office, this noise is heard by the individual tested in free field by means of loudspeakers or through a headset to differentiate the ear " right from the left ear.
L'algorithme est basé sur la création de deux enveloppes fréquentielles contenant un bruit aléatoire. Chacune de ces 2 enveloppes sont contiguës The algorithm is based on the creation of two frequency envelopes containing a random noise. Each of these 2 envelopes are contiguous
en leurs fréquences la plus forte figure 1 in their frequencies the strongest figure 1
Dans une forme particulière le bruit n'est constitué que par une des deux enveloppes.  In a particular form the noise consists only of one of the two envelopes.
Chaque enveloppe fréquentielle allant du simple trait vertical son pur à un rectangle rempli (bande de bruit) , tous types d'enveloppe sont envisageables mais dans une forme préférentielle la création de chaque enveloppe de bruit est limi^ té par une courbe de type X puissance Lambda ou Lambda est à définir par l'opérateur comme coefficient d'incurvation de la courbe. Sur une bande grave allant d'une fréquence grave jusqu'au pic de fréquence , et sur une bande aiguë allant du pic de fréquence à une fréquence aiguë. L'enveloppe de la bande gravé pouvant être différente de l'enveloppe de la bande aiguë, tant au niveau de la courbe , de la pente que de la largeur fréquentielle pour chacune des 2 bandes. La création du bruit aléatoire est logarithmique en fréquence pour s'apparenter à la sensation auditive. Mais dans une autre forme non préférentielle il peut être linéaire La création du bruit aléatoire est logarithmique en puissance, pour s'apparenter à la sensation auditive. Mais dans une autre forme elle peut être linéaire. Each frequency envelope ranging from the simple vertical line is pure to a filled rectangle (noise band), all types of envelope are conceivable but in a preferred form the creation of each envelope of noise is limited by a curve type X power Lambda or Lambda is to be defined by the operator as the curvature coefficient of the curve. On a severe band from a high frequency to a peak frequency, and an acute band from the peak frequency to an acute frequency. The envelope of the engraved strip may be different from the envelope of the acute band, both in terms of the curve, the slope and the frequency width for each of the two bands. The creation of random noise is logarithmic in frequency to resemble the auditory sensation. But in another non-preferential form it can be linear The creation of the random noise is logarithmic in power, to be related to the auditory sensation. But in another form it can be linear.
Ce procédé de décomposition de l'acouphène en deux zones de part et d'autre de la f équence maximum permet de créer le bruit entendu par le patient . This method of decomposing tinnitus into two zones on either side of the maximum frequency makes it possible to create the noise heard by the patient.
Dans le cas particulier de l'acouphène dû à un traumatisme sonore l'audiogramme présente un scotome ou une échancrure dans la perte auditive. Il convient dans ce cas de choisir la fréquence correspondant au creux et si la perte est extrêmement brutale 40 db sur une octave par exemple, l'opérateur choisi pour la zone grave figure 1 une pente très forte sur une bande passante étroite et dans la zone aiguë faire une bande plus large et relativement plate pour correspondre à la perte plate mais importante sur les aigus. Le son émis est donc caractérisé par les pentes correspondant a celles de la perte auditive. In the particular case of tinnitus due to sound trauma the audiogram shows a scotoma or notch in the hearing loss. In this case, it is advisable to choose the frequency corresponding to the hollow and if the loss is extremely sharp 40 db on an octave for example, the operator chosen for the severe zone 1 has a very steep slope on a narrow bandwidth and in the zone acute make a band wider and relatively flat to match the flat but important loss on the treble. The sound emitted is therefore characterized by the slopes corresponding to those of the hearing loss.
Il est parfois nécessaire d'emmètre le bruit test de manière discontinue, pour le différencier du propre bruit du patient. L'algorithme du logiciel permet également cette opération. Le bruit émis puisé permet aussi de vérifier la présence d'un acouphène objectif si celui ci est synchrone au pouls. It is sometimes necessary to take the test noise intermittently, to differentiate it from the patient's own sound. The software algorithm also allows this operation. The noise emitted pulsed can also verify the presence of an objective tinnitus if it is synchronous to the pulse.
Le bruit test équivalent à l'acouphène est ainsi défini par la fréquence du pic, l'enveloppe de la zone grave, sa bande, son incurvation et sa pente, l'enveloppe de la zone aigu sa bande, son incurvation, et sa pente, la puissance émise étant la résultante de la puissance de ces 2 zones. The test noise equivalent to tinnitus is thus defined by the frequency of the peak, the envelope of the severe zone, its band, its curvature and its slope, the envelope of the acute zone its band, its curvature, and its slope. , the power emitted being the result of the power of these two zones.
D'autre part la puissance de l'acouphène est égale à la puissance du bruit test équivalant à l'acouphène moins la puissance du seuil auditif dans la même bande passante. La puissance est calculée en dB relatif. On the other hand the power of tinnitus is equal to the power of test noise equivalent to tinnitus minus the power of the auditory threshold in the same bandwidth. The power is calculated in relative dB.
Le bruit test ainsi défini peut être reproduit par un microprocesseur spécifiquement étudié pour recréer le bruit équivalent à l'acouphène suivant le même al- gorithme ou par la reproduction du bruit test directement dans une aide auditive. The test noise thus defined can be reproduced by a microprocessor specifically designed to recreate the noise equivalent to tinnitus following the same algorithm or by reproducing the test noise directly in a hearing aid.
L'enveloppe et la puissance du bruit étant quantifié une surcorrection a bas niveau correspondant à l'enveloppe et à la puissance, peut ainsi être intégré à une aide auditive le permettant. Le procédé consiste à émettre un bruit aléatoire composé par 2 enveloppes fré- quentielles contiguës en leurs fréquences la plus forte , l'ensemble étant destiné à produire un bruit test pour le comparer à l'acouphène perçu par un individu et ainsi produire un bruit équivalent à l'acouphène . Figure 1 The envelope and the power of the noise being quantified a low level overcorrection corresponding to the envelope and the power, can thus be integrated into a hearing aid allowing it. The method consists in emitting a random noise composed of 2 frequency envelopes contiguous at their highest frequencies, the assembly being intended to produce a test noise to compare it with the tinnitus perceived by an individual and thus to produce an equivalent noise. to tinnitus. Figure 1
Ccaractérisé en ce que la pente de chaque enveloppe soient différentes . Characterized in that the slope of each envelope are different.
Caractérisé en ce que la courbe de la pente de chaque enveloppe soient différentes . Characterized in that the curve of the slope of each envelope are different.
Caractérisé en ce que chaque enveloppe du bruit aléatoire corresponde à des bandes fréquentielles différentes. Characterized in that each envelope of the random noise corresponds to different frequency bands.
Caractérisé en ce que les pentes des enveloppes correspondent aux pentes de la perte auditive du sujet de part et d'autre du scotome auditif. Characterized in that the slopes of the envelopes correspond to the slopes of the hearing loss of the subject on both sides of the auditory scotoma.
Caractérisé en ce que le bruit émis est puisé . Characterized in that the emitted noise is pulsed.
Caractérisé en ce que la puissance de l'acouphène est égale la puissance du bruit équivalant à l'acouphène moins la puissance du seuil auditif dans la même bande passante considérée. Characterized in that the power of tinnitus is equal to the power of noise equivalent to tinnitus minus the power of the auditory threshold in the same bandwidth considered.
Caractérisé en ce que le bruit résultant est défini par sa puissance ainsi que la fréquence minimum, la fréquence maximum, la pente et l'incurvation de cha- que enveloppe. Characterized in that the resulting noise is defined by its power as well as the minimum frequency, the maximum frequency, the slope and the curvature of each envelope.
Caractérisé par l'intégration numérique du bruit équivalent à l'acouphène à un appareil auditif . Caractérisé par une sur-correction à apporter à un appareil auditif correspondant au caractéristique du bruit équivalent à l'acouphène. Characterized by the digital integration of noise equivalent to tinnitus to a hearing aid. Characterized by over-correction to a hearing aid corresponding to the characteristic of noise equivalent to tinnitus.

Claims

REVENDICATIONS
1) Procédé consistant à émettre un bruit en temps réel, calculé par un algorithme informatique qui crée numériquement ce bruit en fabricant 2 enveloppes distinctes, non superposées mais continues en leur fréquence la plus puissante représentant un point de rupture Figure 1 , et en remplissant cette enveloppe résultante, numériquement de manière aléatoire mais en préservant une répartition logarithmique dans une forme préférentielle, ou une répartition linéaire dans une forme particulaire, le résultat numérique étant directement transmis à l'élément informatique de l'ordinateur qui produit les sons et les émet au travers d'un casque ou d'un haut parleur. L'ensemble étant destiné à produire un bruit test pour le comparer à l'acouphène perçu par un individu et ainsi produire un bruit équivalent à l'acouphène . 2) Procédé suivant la revendication 1 caractérisé en ce que la pente de chaque enveloppe est différente . 1) A method of emitting noise in real time, calculated by a computer algorithm that digitally creates this noise by producing two distinct envelopes, not superimposed but continuous in their most powerful frequency representing a breaking point Figure 1, and filling this resulting envelope, numerically random but preserving a logarithmic distribution in a preferred form, or a linear distribution in a particulate form, the numerical result being directly transmitted to the computer element of the computer which produces the sounds and transmits them to through a headset or a speaker. The assembly is intended to produce a test noise to compare it to the tinnitus perceived by an individual and thus produce a noise equivalent to tinnitus. 2) Process according to claim 1 characterized in that the slope of each envelope is different.
3) Procédé suivant la revendication 1 ou 2 caractérisé en ce que la courbe de la pente de chaque enveloppe est différente . 3) Process according to claim 1 or 2 characterized in that the curve of the slope of each envelope is different.
4) Procédé suivant les revendications 1 , 2 ou 3 caractérisé en ce que chaque enveloppe du bruit aléatoire corresponde à des bandes fréquentielles différentes. 4) Process according to claims 1, 2 or 3 characterized in that each envelope of the random noise corresponds to different frequency bands.
5) Procédé suivant les revendications 1 , 2, 3 ou 4 caractérisé en ce que les pen- tes des enveloppes correspondent aux pentes de la perte auditive du sujet de part et d'autre du scotome auditif. 5) A method according to claims 1, 2, 3 or 4 characterized in that the envelopes pens correspond to the slopes of the hearing loss of the subject on both sides of the auditory scotoma.
6) Procédé suivant les revendications 1, 2 , 3 ou 4 caractérisé en ce que le bruit émis est puisé . 6) Process according to claims 1, 2, 3 or 4 characterized in that the emitted noise is pulsed.
7) Procédé suivant les revendications 1 , 2, 3 ou 4 caractérisé en ce que la puissance de l'acouphène est égale à la puissance du bruit équivalant à l'acouphène moins la puissance du seuil auditif dans la même bande passante considérée. 8) Procédé suivant les revendications 1, 2, 3, 4, 5 ou 6 caractérisé en ce que le bruit résultant est défini par sa puissance ainsi que la fréquence minimum, la fréquence maximum, la pente et l'incurvation de chaque enveloppe. 9) Procédé suivant les revendications précédentes caractérisé par l'intégration numérique du bruit équivalent à l'acouphène à un appareil auditif . 7) A method according to claims 1, 2, 3 or 4 characterized in that the power of tinnitus is equal to the power of noise equivalent to tinnitus minus the power of the auditory threshold in the same bandwidth considered. 8) A method according to claims 1, 2, 3, 4, 5 or 6 characterized in that the resulting noise is defined by its power and the minimum frequency, maximum frequency, slope and curvature of each envelope. 9) A method according to the preceding claims characterized by the digital integration of noise equivalent to tinnitus to a hearing aid.
10) Procédé suivant les revendications précédentes caractérisé par une surcorrection à apporter à un appareil auditif correspondant au caractéristique du bruit équivalent à l'acouphène. 10) A method according to the preceding claims characterized by an overcorrection to provide a hearing aid corresponding to the characteristic of noise equivalent to tinnitus.
PCT/FR2014/000085 2013-02-18 2014-04-11 Method for generating a random noise equivalent to tinnitus WO2014125179A1 (en)

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FR1300371 2013-02-18
FR1300371A FR3002149A1 (en) 2013-02-18 2013-02-18 NOISE CREATION METHOD FOR ACOUPHENES TESTING

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5403262A (en) * 1993-03-09 1995-04-04 Microtek Medical, Inc. Minimum energy tinnitus masker
US6047074A (en) * 1996-07-09 2000-04-04 Zoels; Fred Programmable hearing aid operable in a mode for tinnitus therapy
DE10128642A1 (en) * 2000-06-16 2002-01-03 Gerd Tymnik Method for acoustic tinnitus suppression, involves adjusting signal parameter intensity, parameter and phase via direct bio-feedback from patient
WO2009002539A2 (en) * 2007-06-25 2008-12-31 Tinnitus Otosound Products, Llc A system for customized sound therapy for tinnitus management

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5403262A (en) * 1993-03-09 1995-04-04 Microtek Medical, Inc. Minimum energy tinnitus masker
US6047074A (en) * 1996-07-09 2000-04-04 Zoels; Fred Programmable hearing aid operable in a mode for tinnitus therapy
DE10128642A1 (en) * 2000-06-16 2002-01-03 Gerd Tymnik Method for acoustic tinnitus suppression, involves adjusting signal parameter intensity, parameter and phase via direct bio-feedback from patient
WO2009002539A2 (en) * 2007-06-25 2008-12-31 Tinnitus Otosound Products, Llc A system for customized sound therapy for tinnitus management

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WO2014125179A8 (en) 2014-11-06
FR3002149A1 (en) 2014-08-22

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