FR2511211A1 - Telephone handset incorporating variable gain amplifier - has AGC amplifier for microphone and earphone amplifier controlled manually or by microphone signal - Google Patents
Telephone handset incorporating variable gain amplifier - has AGC amplifier for microphone and earphone amplifier controlled manually or by microphone signal Download PDFInfo
- Publication number
- FR2511211A1 FR2511211A1 FR8115580A FR8115580A FR2511211A1 FR 2511211 A1 FR2511211 A1 FR 2511211A1 FR 8115580 A FR8115580 A FR 8115580A FR 8115580 A FR8115580 A FR 8115580A FR 2511211 A1 FR2511211 A1 FR 2511211A1
- Authority
- FR
- France
- Prior art keywords
- amplifier
- microphone
- handset
- telephone
- telephone handset
- 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
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
La présente invention concerne un combiné téléphonique à amplificateur, réglable en réception sur une variation de gain très importante, et destiné en particulier aux malentendants. The present invention relates to a telephone handset with amplifier, adjustable in reception on a very large gain variation, and intended in particular for the hearing impaired.
Plusieurs appareils existent déjà sur le marché et donnent satisfaction aux malentendants légers (amplification de 20 dB) ; la présente invention étend le domaine d'application de ces combinés aux sourds sévères (amplification supérieure à 30 d ), avec des possibilités d'adaptation aux divers audiogrammes de déficience acoustique. Several devices already exist on the market and give satisfaction to the hearing impaired (amplification of 20 dB); the present invention extends the field of application of these handsets to the severely deaf (amplification greater than 30 d), with possibilities of adaptation to the various audiograms of acoustic deficiency.
Contrairement à certaines réalisations existantes dans lesquelles l'amplification s'effectue dans l'appareil ou poste téléphonique, la présente réalisation est entièrement contenue à l'intérieur d'un combiné téléphonique standard, les circuits amplificateurs sont alimentés en énergie électrique par le réseau téléphonique. Un poste téléphonique standard peut ainsi être transformé immédiatement par le remplacement du combiné sans aucun autre apport extérieur d'énergie ou d'appareillage. Unlike certain existing embodiments in which the amplification takes place in the telephone apparatus or station, the present embodiment is entirely contained within a standard telephone handset, the amplifier circuits are supplied with electrical energy by the telephone network. . A standard telephone set can thus be transformed immediately by replacing the handset without any other external contribution of energy or equipment.
La présente invention dont la description générale (fig. 1) en exemple de réalisation, apparait à l'examen des dessins annexés, comprend essentiellement 10) Une structure de combiné téléphonique standard (1) avec ses logements (la) (lb) pour microphone et écouteur, avec leurs pièces ajourées de protection (lc) ainsi qu'une partie centrale (ld) aménagée pour recevoir les circuits d'amplification et de réglage. The present invention, the general description of which (fig. 1) as an exemplary embodiment, appears on examining the appended drawings, essentially comprises 10) A standard telephone handset structure (1) with its housings (la) (lb) for microphone and earphone, with their perforated protective parts (lc) as well as a central part (ld) arranged to receive the amplification and adjustment circuits.
20) Un microphone de type quelconque (2), de directivité normale ou différentielle ou particulière, à charbon, dynamique, condensateur à électrets, ou céramique ou piézo céramique.20) A microphone of any type (2), of directivity normal or differential or particular, with carbon, dynamic, condenser with electrets, or ceramic or piezo ceramic.
30) Un écouteur (3) de type quelconque, magnétique, dynamique, céramique ou pizo céramique ; cet écouteur comportant éventuellement une bobine magnétique (3a) pour couplage éventuel avec une prothèse auditive en position téléphone "T". Ces deux éléments ayant leurs caractéristiques adaptées aux éléments suivants.30) An earphone (3) of any type, magnetic, dynamic, ceramic or ceramic pizo; this earphone possibly comprising a magnetic coil (3a) for possible coupling with a hearing aid in the telephone position "T". These two elements having their characteristics adapted to the following elements.
40) Un amplificateur microphonique (4) à gain automatiquement réglable.40) A microphone amplifier (4) with automatically adjustable gain.
50) Un amplificateur d'écouteur (5) à gain réglable manuellement et automatiquement en simultanéité avec l'amplificateur microphonique.50) A headphone amplifier (5) with manually and automatically adjustable gain simultaneously with the microphone amplifier.
60) Un système de commande (6) automatique (à l'aide d'une bascule électronique) commandé par la voix de l'utilisateur, à partir des signaux issus du microphone (décrit en 2ème) du combiné, agissant à l'inverse sur les gains des amplificateurs ci-dessus ; ainsi la somme
des gains des deux amplificateurs est toujours maintenue au-dessous de
la limite d'accrochage acoustique (effet Larsen - sifflement occasionné
par couplage acoustique).60) An automatic control system (6) (using an electronic rocker) controlled by the user's voice, from signals coming from the microphone (described in 2nd) of the handset, acting in reverse on the gains of the above amplifiers; so the sum
gains of the two amplifiers is always kept below
the acoustic grip limit (Larsen effect - whistling caused
by acoustic coupling).
Le gain de l'amplificateur d'écoute est augmenté jusqu'au maximum
(au moins 30 dB), selon la position du potentiomètre de réglage de niveau
(7), tandis que celui de l'amplificateur microphonique est réduit et, ce
d'autant plus que le gain en écoute est élevé, ce qui interdit l'effet
Larsen quel que soit le gain de l'écoute.The amplifier gain is increased to the maximum
(at least 30 dB), depending on the position of the level adjustment potentiometer
(7), while that of the microphone amplifier is reduced and, this
especially since the gain in listening is high, which prohibits the effect
Larsen whatever the gain of listening.
La commande de la bascule électronique contrôlant les deux atté
nuateurs est assurée, à partir d'un préamplificateur microphonique, par le niveau de la parole pour un seuil de 80 à 85 dB, afin que le combiné télé
phonique soit facilement utilisable en conversation à la distance'normale.The electronic scale control controlling the two atté
shadows is ensured, from a microphone preamplifier, by the speech level for a threshold of 80 to 85 dB, so that the TV handset
phonic is easily usable in conversation at normal distance.
Pour des niveaux d'écoute relativement bas (cas du bienentendant
utilisant ce combiné), la bascule électronique qui n'est plus nécessaire
se trouve mise progressivement hors service par l'intermédiaire du poten
tiomètre (7) lorsque celui-ci est au minimum.For relatively low listening levels (case of the hearing
using this handset), the electronic scale which is no longer necessary
is gradually put out of service through the poten
tiometer (7) when it is at least.
(70) Un réseau de filtrage (B) ajustable permettant d'adapter la courbe
de réponse de l'écouteur à celle de l'audiogramme de l'utilisateur, ceci
à l'aide d'un tournevis pénétrant par 11 orifice (boa). (70) An adjustable filter network (B) to adapt the curve
response of the earpiece to that of the user's audiogram, this
using a screwdriver penetrating through 11 hole (boa).
80) Un circuit compresseur (9) ajustable, évitant la transmission acous
tique de niveaux excessifs pour les malentendants atteints de "recrutement"
c'est-à-dire ayant une dynamique d'écoute très restreinte, lors de la
transmission de bruits intenses ou de chocs, au cours de la conversation
téléphonique.80) An adjustable compressor circuit (9), avoiding acous transmission
excessive levels of tick for hearing impaired with "recruitment"
that is to say having a very limited listening dynamic, during the
transmission of intense noise or shock during conversation
telephone.
90) Un circuit d'interconnexion (10) des divers éléments ci-dessus
mentionnés -(2, 3, 4, 5 et 6) avec les composants nécessaires pour l'alimentation par la ligne téléphonique (via le poste téléphonique), ainsi que
le potentiomètre de réglage de volume (7), placé de façon très accessible,
pour être réglé pendant la conversation, à partir des doigts de la main maintenant le combiné
Dans la planche 2/2 fig. 2 est indiqué d'une façon schématique le
diagramme de principe de l'ensemble décrit précédemment ainsi que le
circuit d'alimentation et de filtrage annexé au circuit d'interconnexion
(10) défini en 9ème. 90) An interconnection circuit (10) of the various above elements
mentioned - (2, 3, 4, 5 and 6) with the necessary components for power supply via the telephone line (via the telephone set), as well as
the volume adjustment potentiometer (7), placed in a very accessible way,
to be adjusted during the conversation, from the fingers of the hand holding the handset
In plate 2/2 fig. 2 is indicated schematically the
block diagram of the assembly described above as well as the
supply and filter circuit annexed to the interconnection circuit
(10) defined in 9th.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8115580A FR2511211B1 (en) | 1981-08-10 | 1981-08-10 | SPECIAL TELEPHONE HANDSET FOR HEARING DEFICIENTS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8115580A FR2511211B1 (en) | 1981-08-10 | 1981-08-10 | SPECIAL TELEPHONE HANDSET FOR HEARING DEFICIENTS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2511211A1 true FR2511211A1 (en) | 1983-02-11 |
FR2511211B1 FR2511211B1 (en) | 1987-07-10 |
Family
ID=9261404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8115580A Expired FR2511211B1 (en) | 1981-08-10 | 1981-08-10 | SPECIAL TELEPHONE HANDSET FOR HEARING DEFICIENTS |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2511211B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2570239A1 (en) * | 1984-09-07 | 1986-03-14 | Centre Nat Rech Scient | EARPHONE, TELEPHONE AND TELEPHONE HELMET FOR CORRECTING INDIVIDUAL HEARING DEFICIENCIES |
FR2633125A1 (en) * | 1988-06-17 | 1989-12-22 | Sgs Thomson Microelectronics | Acoustic apparatus with voice filtering card |
FR2649272A1 (en) * | 1989-06-30 | 1991-01-04 | Depaepe Sa Henri | Acoustic amplifying device for telephone set for the hard of hearing |
FR2762463A1 (en) * | 1997-04-18 | 1998-10-23 | Frederic Barok | IMPROVED TELEPHONE DEVICE FOR THE HEARING-HARD |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4151376A (en) * | 1977-01-24 | 1979-04-24 | Walker Equipment & Service Co. | Amplifier for telephone handset |
-
1981
- 1981-08-10 FR FR8115580A patent/FR2511211B1/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4151376A (en) * | 1977-01-24 | 1979-04-24 | Walker Equipment & Service Co. | Amplifier for telephone handset |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2570239A1 (en) * | 1984-09-07 | 1986-03-14 | Centre Nat Rech Scient | EARPHONE, TELEPHONE AND TELEPHONE HELMET FOR CORRECTING INDIVIDUAL HEARING DEFICIENCIES |
EP0176459A1 (en) * | 1984-09-07 | 1986-04-02 | Centre National De La Recherche Scientifique (Cnrs) | Ear phone, telephone handset and head phones for correcting individual hearing deficiencies |
US4764957A (en) * | 1984-09-07 | 1988-08-16 | Centre National De La Recherche Scientifique-C.N.R.S. | Earpiece, telephone handset and headphone intended to correct individual hearing deficiencies |
FR2633125A1 (en) * | 1988-06-17 | 1989-12-22 | Sgs Thomson Microelectronics | Acoustic apparatus with voice filtering card |
FR2649272A1 (en) * | 1989-06-30 | 1991-01-04 | Depaepe Sa Henri | Acoustic amplifying device for telephone set for the hard of hearing |
FR2762463A1 (en) * | 1997-04-18 | 1998-10-23 | Frederic Barok | IMPROVED TELEPHONE DEVICE FOR THE HEARING-HARD |
EP0874504A1 (en) * | 1997-04-18 | 1998-10-28 | Frédéric Barok | Improved telephone apparatus for the hard of hearing |
Also Published As
Publication number | Publication date |
---|---|
FR2511211B1 (en) | 1987-07-10 |
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ST | Notification of lapse | ||
AR | Application made for restoration | ||
DA | Annulment of decision of lapse | ||
ST | Notification of lapse |