FR2448264A1 - Perfectionnement a un appareil telephonique - Google Patents

Perfectionnement a un appareil telephonique

Info

Publication number
FR2448264A1
FR2448264A1 FR7902329A FR7902329A FR2448264A1 FR 2448264 A1 FR2448264 A1 FR 2448264A1 FR 7902329 A FR7902329 A FR 7902329A FR 7902329 A FR7902329 A FR 7902329A FR 2448264 A1 FR2448264 A1 FR 2448264A1
Authority
FR
France
Prior art keywords
listening
features
silicone resin
speaker
telephone set
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
FR7902329A
Other languages
English (en)
French (fr)
Other versions
FR2448264B1 (enrdf_load_stackoverflow
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.)
Toa Corp
Original Assignee
Toa Electric Co Ltd
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 Toa Electric Co Ltd filed Critical Toa Electric Co Ltd
Priority to FR7902329A priority Critical patent/FR2448264A1/fr
Publication of FR2448264A1 publication Critical patent/FR2448264A1/fr
Application granted granted Critical
Publication of FR2448264B1 publication Critical patent/FR2448264B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR7902329A 1979-01-30 1979-01-30 Perfectionnement a un appareil telephonique Granted FR2448264A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7902329A FR2448264A1 (fr) 1979-01-30 1979-01-30 Perfectionnement a un appareil telephonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7902329A FR2448264A1 (fr) 1979-01-30 1979-01-30 Perfectionnement a un appareil telephonique

Publications (2)

Publication Number Publication Date
FR2448264A1 true FR2448264A1 (fr) 1980-08-29
FR2448264B1 FR2448264B1 (enrdf_load_stackoverflow) 1981-10-30

Family

ID=9221356

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7902329A Granted FR2448264A1 (fr) 1979-01-30 1979-01-30 Perfectionnement a un appareil telephonique

Country Status (1)

Country Link
FR (1) FR2448264A1 (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2053862A1 (de) * 1969-10-30 1971-05-13 Ericsson Telefon Ab L M Ein kombiniertes laut und leise sprechendes Telefon mit zwei akusti sehen Wandlern
DE2134265B2 (de) * 1971-07-09 1972-06-29 Robert Bosch Elektronik Gmbh, 1000 Berlin Und 7000 Stuttgart Fahrzeug-Fernsprech-Handapparat

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2053862A1 (de) * 1969-10-30 1971-05-13 Ericsson Telefon Ab L M Ein kombiniertes laut und leise sprechendes Telefon mit zwei akusti sehen Wandlern
DE2134265B2 (de) * 1971-07-09 1972-06-29 Robert Bosch Elektronik Gmbh, 1000 Berlin Und 7000 Stuttgart Fahrzeug-Fernsprech-Handapparat

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXRV/73 *

Also Published As

Publication number Publication date
FR2448264B1 (enrdf_load_stackoverflow) 1981-10-30

Similar Documents

Publication Publication Date Title
US5778085A (en) Audio conference device having echo canceller
US4850016A (en) Microphone
US6324284B1 (en) Telephone handset with enhanced handset/handsfree receiving and alerting audio quality
DE60115148D1 (de) Lautsprecher für Decken mit direkter Verlegung
KR890013949A (ko) 모듀러 마이크로폰 조립체
FR2379220A1 (fr) Haut-parleur a cornet
US4528426A (en) Directional microphone assembly
KR910007379A (ko) 전기 음향 변환기장치
CA2094616C (en) Compact loudspeaker assembly
FR2637147A1 (fr) Enceinte electro-acoustique omnidirectionnelle
ATE303695T1 (de) Mobiles kommunikationsendgerät mit im gerätegehäuse angeordnetem flachlautsprecher und einem weiteren schallwandler angeordnet zu einem zwei-wege-systems mit dem flachlautsprecher
US20240073584A1 (en) Electronic Device With A Function Of Sound
JPH0898113A (ja) 音響装置
ES2060865T3 (es) Altavoz con cierre de bayoneta.
FR2448264A1 (fr) Perfectionnement a un appareil telephonique
KR102110324B1 (ko) 음향 제어 구조를 가지는 이어폰 유닛
AU2649099A (en) Telephone with means for anhancing the low-frequency response
DE59002220D1 (de) Im-ohr-hoergeraet mit schall-ausgleichskanal.
JPS63232798A (ja) マイクロホンユニツト
GB1593769A (en) Horn loudspeaker
JPH10290491A (ja) 携帯電話用マイクロホン
KR101023467B1 (ko) 이어마이크폰
JP2006157199A (ja) スライド型携帯端末
JPH03123153A (ja) スピーカ用ゴムカバー
CN2443554Y (zh) 免持听筒