FR2577739A1 - Device for perception and analysis of sounds by tactile or optical means - Google Patents

Device for perception and analysis of sounds by tactile or optical means Download PDF

Info

Publication number
FR2577739A1
FR2577739A1 FR8502480A FR8502480A FR2577739A1 FR 2577739 A1 FR2577739 A1 FR 2577739A1 FR 8502480 A FR8502480 A FR 8502480A FR 8502480 A FR8502480 A FR 8502480A FR 2577739 A1 FR2577739 A1 FR 2577739A1
Authority
FR
France
Prior art keywords
frequency
oscillator
signal
sounds
whose
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.)
Granted
Application number
FR8502480A
Other languages
French (fr)
Other versions
FR2577739B1 (en
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8502480A priority Critical patent/FR2577739B1/en
Publication of FR2577739A1 publication Critical patent/FR2577739A1/en
Application granted granted Critical
Publication of FR2577739B1 publication Critical patent/FR2577739B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/04—Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense, e.g. through the touch sense
    • A61F11/045—Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense, e.g. through the touch sense using mechanical stimulation of nerves
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00—Teaching, or communicating with, the blind, deaf or mute
    • G09B21/001—Teaching or communicating with blind persons
    • G09B21/007—Teaching or communicating with blind persons using both tactile and audible presentation of the information

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Neurology (AREA)
  • Physiology (AREA)
  • Otolaryngology (AREA)
  • Theoretical Computer Science (AREA)
  • Educational Technology (AREA)
  • Educational Administration (AREA)
  • Business, Economics & Management (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Biophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Psychology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The invention comprises an apparatus consisting, in its input, of a sensor of sounds by means of a conventional microphone 1, and in its output of electromechanical or optical transducers of unspecified but sufficient number to allow correct sound definition 10. The signal picked up is, after amplification, processed so as to be analysed into its component frequencies. The latter are converted into signals applied by specified electromechanical or optical transducers respectively; each of the latter conveys, for a specified narrow frequency band, a pressure which is exerted on a fixed point of the skin, or a spatially fixed luminous flash enabling the subject thus equipped to discern the intensity thereof. The assembly thus constituted provides an image of the sound, either tactile or optical, making it possible after training, to "hear" with all the desired sensitivity and selectivity, the various sounds normally perceived by any non-defective hearing.

Description

L'appareil qui fait ltobjet de la présente invention est destine aux handicapes sourds ; il permet a ceux-ci de percevoir analytiquement les sons par la voie de la sensibilite tactile de la peau. The apparatus which is the subject of the present invention is intended for deaf handicapped persons; it allows them to perceive sounds analytically by way of the tactile sensitivity of the skin.

Il convient de noter, qu'actuellement, les personnes atteintes de surdite n'ont la plupart du temps que des possibilites de prothèse fonctionnant en utilisant des restes d'audition normale par le biais d'amplificateurs, et de correcteurs de courbes de reponse assurant l'adaptation. It should be noted that, currently, deaf people have most of the time only possibilities of prosthesis functioning by using normal hearing residues by means of amplifiers, and correctors of response curves ensuring adaptation.

Cet appareil procède à une decomposition des sons reçus, selon leurs frequences composantes. Chacune des frequences ainsi selectionnee caracterisee par une amplitude propre, est amplifiée et traitée, pour aboutir sous forme d'un signal à basse fréquence à un transducteur électromecanique qui exerce une pression sur un point déterminé de la peau. This device performs a decomposition of the received sounds, according to their component frequencies. Each of the frequencies thus selected, characterized by its own amplitude, is amplified and processed, to lead in the form of a low frequency signal to an electromechanical transducer which exerts pressure on a determined point of the skin.

Le signal ainsi perçu permet, d'une part d'en connattre subjectivement la frequence grâce à sa localisation unique, d'autre part son intensite, grâce à la force de pression qu'il occasionne. La pression peut varier de la valeur zero, correspondant, bien entendu, à l'absence de signal correspondant, à un niveau maximum traduisant un seuil de saturation.The signal thus perceived makes it possible, on the one hand to know the frequency subjectively thanks to its unique location, on the other hand its intensity, thanks to the pressure force which it causes. The pressure can vary from the zero value, corresponding, of course, to the absence of a corresponding signal, to a maximum level reflecting a saturation threshold.

L'ensemble des signaux appliques de la sorte constituent une image tactile du son que le sujet pourra percevoir et analyser instantanement après education.All the signals applied in this way constitute a tactile image of the sound that the subject can perceive and analyze instantly after education.

Le système a donc pour rôle d'analyser les sons suivant les fréquences qui les composent et d'appliquer les signaux correspondants sous forme de pressions mecaniques sur des points déterminés de la peau, afin que la sensibilite tactile de cette dernière en assure leur discrimination. Le nombre de frequences separees et l'etendue des variations des forces de pression sont etablis pour assurer une saisie convenable des sons se rapprochant le plus possible des performances d'une ouie normale.  The role of the system is therefore to analyze the sounds according to the frequencies which compose them and to apply the corresponding signals in the form of mechanical pressures on determined points of the skin, so that the tactile sensitivity of the latter ensures their discrimination. The number of separate frequencies and the range of pressure force variations are established to ensure proper capture of sounds as close as possible to the performance of normal hearing.

Il peut être observe que l'etendue des frequences reçues peut être developpee pour deborder dans les domaines des infrasons et des ultrasons permettant alors certaines utilisations particulières.It can be observed that the range of frequencies received can be developed to extend beyond the infrasound and ultrasound fields, thus allowing certain specific uses.

Afin de saisir egalement la direction des sons perçus, comme peut le faire une ouie normale, le sujet peut être porteur d'une equipement double ; deux microphones seront alors disposes suivant une distance suffisante et les deux recepteurs places sur des zones distinctes de la surface cutanee, à determiner experimentalement en tenant compte de la symetrie bilaterale du corps humain. In order to also grasp the direction of the perceived sounds, as a normal hearing can do, the subject can wear double equipment; two microphones will then be placed at a sufficient distance and the two receivers placed on separate areas of the skin surface, to be determined experimentally taking into account the bilateral symmetry of the human body.

Il convient de rappeler que le nouvel. appareillage necessite une periode prealable d'utilisation nécessaire à l'adaptation et à l'education du cerveau.  It should be remembered that the new. Apparatus requires a prior period of use necessary for the adaptation and education of the brain.

FONCTIONNEMENT
a) - Un oscillateur 3 délivre un signal d'une fréquence déterminée (par exemple : 1 Mc/s)
b) - Le signal obtenu est modulé en amplitude par la basse fréquence son qui a été recueilli par le microphone 1 et convenablement amplifié par 2. Il est d'autre part modulé en fréquence par un signal en dent de scie à 25qôentratnant une excursion de fréquence ~ 5000 c/s
c) - Un filtrage "pointu"#bande passantes 300 périodes/secondes est interposé à la sortie du modulateur4,Il est ainsi obtenu, à ce rythme, une séquence de signaux filtrés.La modulation d'amplitude par les signaux sens ayant entraîné corrélativement une excursion en fréquence du signal support inversement proportionnelle à leur propre période, la séquence temporelle de sortie se présente comme une analyse du son suivant ses fréquences
d) - tJne détection est appliquée pour ne retenir du signal que sa composante basse fréquence 6.OPERATION
a) - An oscillator 3 delivers a signal of a determined frequency (for example: 1 Mc / s)
b) - The signal obtained is modulated in amplitude by the low frequency sound which has been collected by the microphone 1 and suitably amplified by 2. It is on the other hand modulated in frequency by a sawtooth signal at 25qôentratnant an excursion of frequency ~ 5000 c / s
c) - A "sharp" filtering # bandwidth 300 periods / seconds is interposed at the output of the modulator4, It is thus obtained, at this rate, a sequence of filtered signals. The amplitude modulation by the direction signals having resulted correlatively a frequency excursion of the support signal inversely proportional to their own period, the output time sequence is presented as an analysis of the sound according to its frequencies
d) - tJne detection is applied to retain the signal only its low frequency component 6.

e) - Sur les signaux ainsi obtenus (25 par seconde), un multi plexagegest effectué pendant la durée de chaque cycle afin de faire apparattre sur chacune des sorties (16 par exemple, ou plus) le signal correspondant à une seule bande de fréquence. Sur chacune d'elles, on verra donc apparaître au rythme de 25 foispar seconde le signal correspondant, à la largeur de bande près, ici 300 périodes/secondes, à une fréquence bien déterminée de son. Ce signal a une amplitude proportionnelle au niveau du signal incident. e) - On the signals thus obtained (25 per second), a multi plexagegest carried out during the duration of each cycle in order to make appear on each of the outputs (16 for example, or more) the signal corresponding to a single frequency band. On each of them, we will therefore see the appearance, at a rate of 25 times per second, of the corresponding signal, to the nearest bandwidth, here 300 periods / seconds, at a clearly determined frequency of sound. This signal has an amplitude proportional to the level of the incident signal.

f) - Chacune des sorties est connectée en permanence à un transducteur qui lui est propre ; ce dernier va transforeer le signal électrique en impulsion mécanique. Ce dernier, appliqué sur un point bien dé- terminé de l'épiderme, communique donc un message.  f) - Each of the outputs is permanently connected to its own transducer; the latter will transform the electrical signal into a mechanical impulse. The latter, applied to a well-defined point on the epidermis, therefore communicates a message.

Il lui indique la fréquence x de la partie du son recueilli et son amplitude.It tells him the frequency x of the part of the sound collected and its amplitude.

g) - L'ensemble des seize transducteurs communique donc à la peau un ensemble de signaux qui permettent aux nerfs sensitifs de déterminer
1 -Les fréquences composantes du son en fonction de la
localisation du point excité correspondant
20 - L'amplitude de ces signaux par appréciation des pres
sions appliquées.g) - All sixteen transducers therefore communicate to the skin a set of signals which allow the sensory nerves to determine
1 -The component frequencies of sound as a function of
location of the corresponding excited point
20 - The amplitude of these signals by appreciation of the pres
applied.

NOTA
Les transducteurs électromécaniques pourraient être remplacés par des transducteurs optiques, transformant le signal électrique en signal lumineux, au moyen de diodes électroluminescentes LED par exemple. L'ensemble des LED ainsi connecté au multiplexeur est fixé d'une manière invariable suivant un schéma spatial fixe que l'oeil pourra observer.NOTE
The electromechanical transducers could be replaced by optical transducers, transforming the electrical signal into a light signal, by means of light-emitting diodes LED for example. The set of LEDs thus connected to the multiplexer is fixed in an invariable manner according to a fixed spatial diagram that the eye can observe.

Par son éducation, ce dernier saura qu'à tel point lumineux correspond telle fréquence du son perçu dont il pourra, par son éclat, apprécier l'intensité.By his education, the latter will know that to such a luminous point corresponds such frequency of the perceived sound of which he will be able, by his brightness, to appreciate the intensity.

Il est bien entendu que la présente invention n'est pas limitée au mode de réalisation décrit et représenté qui constitue seulement un exemple auquel de nombreuses modifications peuvent être apportées sans qu'on s'écarte de la présente invention.  It is understood that the present invention is not limited to the embodiment described and shown which is only an example to which many modifications can be made without departing from the present invention.

Claims (8)

REVENDICATIONS 10 - Dispositif électronique permettant aux personnes qui en sont équipées de percevoir et d'analyser les sons par la voie tactile ou visuelle. Il se caractérise par la présence d'un capteur microphonique (1) suivi d'un amplificateur (2), d'un modulateur (4) dans lequel le son capté et amplifié module en amplitude un signal, de fréquence de base 1 Mc/s par exemple, lequel a été lui-même modulé au préalable en fréquence (3) par un signal en dent de scie qui lui a conféré ainsi à chaque période une excursion de fréquence de l'ordre de 5 000 c/s.10 - Electronic device allowing people who are equipped with it to perceive and analyze sounds by tactile or visual means. It is characterized by the presence of a microphone sensor (1) followed by an amplifier (2), a modulator (4) in which the sound picked up and amplified modulates in amplitude a signal, of basic frequency 1 Mc / s for example, which has itself been frequency-modulated beforehand (3) by a sawtooth signal which has thus given it, in each period, a frequency excursion of the order of 5000 c / s. Un filtre de bande (5) calé sur la fréquence de 1 Mc/s sélectionne une tranche de ce signal d'environ 300 c/s. Cette dernière est redressée (6), pour éliminer la composante support, et est appliquée séquentiellement sur des transducteurs électromécaniques (10) tactiles ou optiques, par l'intermédiaire d'un multiplexeur (7), lui-même commandé par des signaux rectangulaires visant à obtenir-un balayage complet de l'ensemble des transducteurs pour chaque période du signal en dent de scie. Dans ce but, le générateur (8) fournit ces signaux rectangulaires ; il est lui-même synchronisé avec l'oscillateur (10) par les impulsions obtenues à la sortie d'un étage différentiateur de mise en forme (9).A band filter (5) set to the frequency of 1 Mc / s selects a slice of this signal of approximately 300 c / s. The latter is rectified (6), to eliminate the support component, and is applied sequentially to electromechanical transducers (10) tactile or optical, via a multiplexer (7), itself controlled by rectangular signals aimed to obtain a complete scan of all the transducers for each period of the sawtooth signal. For this purpose, the generator (8) supplies these rectangular signals; it is itself synchronized with the oscillator (10) by the pulses obtained at the output of a differentiating shaping stage (9). 20 - Dispositif suivant la revendication 1, caractérisé par un oscillateur (3) générant un signal dont la fréquence citée de 1 Mc/s n'est pas imposée mais doit-être suffisamment élevée pour permettre les traitements de modulation indiqués.20 - Device according to claim 1, characterized by an oscillator (3) generating a signal whose cited frequency of 1 Mc / s is not imposed but must be high enough to allow the indicated modulation processing. 30 - Dispositif selon les revendications 1 et 2, caractérisé par une modulation en fréquence de l'oscillateur (3) suivant un signal en dent de scie, conférant pour chaque période de ce dernier une excursion linéaire de la fréquence de base.30 - Device according to claims 1 and 2, characterized by a frequency modulation of the oscillator (3) according to a sawtooth signal, giving for each period of the latter a linear excursion of the base frequency. L'amplitude des dents de scie est ajustée pour assurer une excursion égale ou supérieure à 5 000 c/s, dans la limite des fréquences des sons à percevoir. La valeur indiquée ici de 5 000 c/s n'est pas imposée mais correspond à la fréquence utile nécessaire pour assurer une compréhension convenable de la voix humaine. Elle peut être élevée pour la perception des sons d'une autre nature.The amplitude of the saw teeth is adjusted to ensure an excursion equal to or greater than 5000 c / s, within the limit of the frequencies of the sounds to be perceived. The value indicated here of 5000 c / s is not imposed but corresponds to the useful frequency necessary to ensure a suitable understanding of the human voice. It can be set high for the perception of sounds of another nature. 40 - Dispositif selon les revendications 1, 2 et 3, caractérisé par la présence d'un générateur de signaux en dent de scie (lo) dont la fréquence n'est pas imposée mais doit assurer un rythme d'excursion suffisant de la fréquence de l'oscillateur (3) pour saisir valablement les var#iations de fréquence et d'amplitude du son. La fréquence proposée ici pour permettre l'analyse de la voix humaine est de 25 c/s environ. L'amplitude doit être réglée pour permettre une excursion de l'ordre de 5 000 c/s.40 - Device according to claims 1, 2 and 3, characterized by the presence of a sawtooth signal generator (lo) whose frequency is not imposed but must ensure a sufficient excursion rate of the frequency of the oscillator (3) to validly capture the variations in frequency and amplitude of the sound. The frequency proposed here to allow analysis of the human voice is approximately 25 c / s. The amplitude must be adjusted to allow an excursion of the order of 5000 c / s. 50 - Dispositif selon la revendication 1, caractérisé par la présence d'un filtre de bande(S) dont la largeur de la courbe de réponse n'est pas imposée mais doit être au maximum de l'ordre de 300 c/s. Elle détermine le degré d'analyse du son, d'autant plus élevé qu'elle est plus étroite.50 - Device according to claim 1, characterized by the presence of a band filter (S) whose width of the response curve is not imposed but must be at most of the order of 300 c / s. It determines the degree of sound analysis, the higher the narrower. 60 - Dispositif selon la revendication 1, caractérisé par un multiplexeur (7) dont le nombre de sorties n'est pas imposé. Une valeur de 16 représente toutefois un minimum et un ordre de grandeur. Le nombre de sorties est inversement proportionnel à la largeur de la bande passante du filtre (5).60 - Device according to claim 1, characterized by a multiplexer (7) whose number of outputs is not imposed. A value of 16, however, represents a minimum and an order of magnitude. The number of outputs is inversely proportional to the width of the passband of the filter (5). 70 - Dispositif selon les revendications 1 et 6, caractérisé par un 70 - Device according to claims 1 and 6, characterized by a générateur de signaux rectangulaires (8) dont la fréquence est le rectangular signal generator (8) whose frequency is produit du nombre de sorties du multiplexeur (7) par la fréquence de product of the number of outputs of the multiplexer (7) by the frequency of l'oscillateur (10). Le générateur commande ainsi un balayage couplet the oscillator (10). The generator thus controls a verse sweep de l'ensemble des sorties du multiplexeur pour chaque flanc de période of all the multiplexer outputs for each period flank des signaux de l'oscillateur (10).  signals from the oscillator (10). 80 - Dispositif selon la revendication 1 et 6 caractérisé par un ensemble de transducteurs de sortie (10) chargés d'assurer, selon le cas, soit une traduction tactile par électroaimants dont les noyaux appuient sur l'épiderme selon une répartition à déterminer, soit une traduction visuelle au moyen de LEDS par exemple, répartis spacialement de manière fixe et suffisamment espacés pour être vus de manière distincte. 80 - Device according to claim 1 and 6 characterized by a set of output transducers (10) responsible for ensuring, as appropriate, either a tactile translation by electromagnets whose nuclei press on the epidermis according to a distribution to be determined, or a visual translation by means of LEDS for example, spatially fixed and sufficiently spaced to be seen separately.
FR8502480A 1985-02-19 1985-02-19 DEVICE FOR PERCEPTING AND ANALYZING SOUNDS BY TACTILE OR OPTICAL WAY Expired - Lifetime FR2577739B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8502480A FR2577739B1 (en) 1985-02-19 1985-02-19 DEVICE FOR PERCEPTING AND ANALYZING SOUNDS BY TACTILE OR OPTICAL WAY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8502480A FR2577739B1 (en) 1985-02-19 1985-02-19 DEVICE FOR PERCEPTING AND ANALYZING SOUNDS BY TACTILE OR OPTICAL WAY

Publications (2)

Publication Number Publication Date
FR2577739A1 true FR2577739A1 (en) 1986-08-22
FR2577739B1 FR2577739B1 (en) 1992-08-21

Family

ID=9316479

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8502480A Expired - Lifetime FR2577739B1 (en) 1985-02-19 1985-02-19 DEVICE FOR PERCEPTING AND ANALYZING SOUNDS BY TACTILE OR OPTICAL WAY

Country Status (1)

Country Link
FR (1) FR2577739B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843623A (en) * 1986-05-23 1989-06-27 University De Franche-Comte Hearing aid devices in which high frequency signal portions are transposed in low frequency compenstion signal portions
WO1991017638A1 (en) * 1990-05-09 1991-11-14 Tøpholm & Westermann APS Tinnitus masking device
WO1992009251A1 (en) * 1990-11-28 1992-06-11 Canadian Bionic Research, Inc. Communication device for transmitting audio information to a user
FR2800966A1 (en) * 1999-11-10 2001-05-11 Jean Max Coudon TOUCH STIMULATION DEVICE FOR USE BY A DEAF PERSON

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1515175A (en) * 1967-01-18 1968-03-01 Device allowing the perception of various physical phenomena by means of tactile sensitivity
FR2363842A1 (en) * 1976-09-03 1978-03-31 Carrat Roland Pigeon training and re-training scheme - employs coding of acoustic signal having frequency spectrum with blanketing curve possessing certain number of peak values (NL 7.3.78)
US4250637A (en) * 1979-06-13 1981-02-17 Scott Instruments Company Tactile aid to speech reception

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1515175A (en) * 1967-01-18 1968-03-01 Device allowing the perception of various physical phenomena by means of tactile sensitivity
FR2363842A1 (en) * 1976-09-03 1978-03-31 Carrat Roland Pigeon training and re-training scheme - employs coding of acoustic signal having frequency spectrum with blanketing curve possessing certain number of peak values (NL 7.3.78)
US4250637A (en) * 1979-06-13 1981-02-17 Scott Instruments Company Tactile aid to speech reception

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843623A (en) * 1986-05-23 1989-06-27 University De Franche-Comte Hearing aid devices in which high frequency signal portions are transposed in low frequency compenstion signal portions
WO1991017638A1 (en) * 1990-05-09 1991-11-14 Tøpholm & Westermann APS Tinnitus masking device
WO1992009251A1 (en) * 1990-11-28 1992-06-11 Canadian Bionic Research, Inc. Communication device for transmitting audio information to a user
US5337364A (en) * 1990-11-28 1994-08-09 Canadian Bionic Research Inc. Communication device for transmitting audio information to a user
FR2800966A1 (en) * 1999-11-10 2001-05-11 Jean Max Coudon TOUCH STIMULATION DEVICE FOR USE BY A DEAF PERSON
EP1100286A1 (en) * 1999-11-10 2001-05-16 Jean-Max Coudon Tactile stimulation device for deaf
US6628195B1 (en) 1999-11-10 2003-09-30 Jean-Max Coudon Tactile stimulation device for use by a deaf person

Also Published As

Publication number Publication date
FR2577739B1 (en) 1992-08-21

Similar Documents

Publication Publication Date Title
Kohlrausch et al. The influence of carrier level and frequency on modulation and beat-detection thresholds for sinusoidal carriers
Evans Place and time coding of frequency in the peripheral auditory system: some physiological pros and cons
Long et al. Investigations into the nature of the association between threshold microstructure and otoacoustic emissions
Bilsen et al. Repetition pitch and its implication for hearing theory
US5285499A (en) Ultrasonic frequency expansion processor
US4390748A (en) Electro-acoustical measuring device and method
Moore et al. Factors affecting the loudness of modulated sounds
EP0128848B1 (en) Test bench for an electroacoustic assembly, in particular for hearing aids
FR2577739A1 (en) Device for perception and analysis of sounds by tactile or optical means
Plomp Perception of speech as a modulated signal
US5161197A (en) Acoustic analysis
CN112382313A (en) Audio communication quality evaluation system and method
KR101031113B1 (en) Ultra-small-size microphone based hearing aid apparatus
Flanagan et al. Binaural unmasking of complex signals
DE59913088D1 (en) Measuring method for aurally quality assessment of audio signals
Oxenham Increment and decrement detection in sinusoids as a measure of temporal resolution
US10931881B2 (en) Sample inspection utilizing time modulated illumination
Bibee et al. Spectrotemporal weighting of binaural cues: effects of a diotic interferer on discrimination of dynamic interaural differences
CN111128219B (en) Laser Doppler sound taking method and device
Heinrich et al. The role of stimulus complexity, spectral overlap, and pitch for gap-detection thresholds in young and old listeners
Gockel et al. Influence of component phase on the loudness of complex tones
Gallun et al. Amplitude modulation sensitivity as a mechanism for increment detection
Kletsky et al. Estimation of the Integration Time‐Constant in Auditory Receptor Units
Rothenberg et al. Vibrotactile frequency for encoding speech parameters
Demany et al. The perception of frequency peaks and troughs in wide frequency modulations. IV. Effects of modulation waveform

Legal Events

Date Code Title Description
ST Notification of lapse