GB1002983A - Apparatus for two-way speech communication - Google Patents
Apparatus for two-way speech communicationInfo
- Publication number
- GB1002983A GB1002983A GB3992161A GB3992161A GB1002983A GB 1002983 A GB1002983 A GB 1002983A GB 3992161 A GB3992161 A GB 3992161A GB 3992161 A GB3992161 A GB 3992161A GB 1002983 A GB1002983 A GB 1002983A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loud
- speaker
- microphone
- lever
- nov
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
- A45C11/16—Jewel boxes
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
1,002,983. Loud-speaking telephone sets. H. PEIKER. Nov. 8, 1961 [Nov. 12, 1960], No. 39921/61. Heading H4J. A loud-speaking telephone instrument includes a loud-speaker and a unidirectional microphone coaxially mounted, the microphone being so disposed relatively to the loud-speaker that it presents an aspect of minimum response opposed to an aspect of the loud-speaker from which maximum sound radiation occurs. The microphone may have a kidney-shaped or clubshaped directional characteristic. A unidirectional microphone 1 (Fig. 3) is secured in front of a loud-speaker 6, the microphone 1 having its direction of minimum response towards the loud-speaker 6. The microphone 1 is carried by supports 12, 13 which enable it to be moved from the working position (as shown) to a position in which it is close up against the loud-speaker. Movement is effected by operation of a key 10 which also operates a switch 11 for the current supply to an associated amplifier (not shown). A sound screen 15 is attached to the microphone 1 or to the loud-speaker 6 or to the supports 12, 13. In an alternative arrangement (Fig. 4, not shown) the microphone is carried on a single lever and may be swung, by operation of a key, from a rest position close up against the front of the loud-speaker, or within the cavity of the loudspeaker cone, to a working position spaced further from the loud-speaker. A sound screen of conical form may be attached to a lever which swings simultaneously with the microphone lever.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1965P0026029 DE1206967B (en) | 1965-10-02 | 1965-10-02 | Facility for two-way communication |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1002983A true GB1002983A (en) | 1965-09-02 |
Family
ID=7370310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3992161A Expired GB1002983A (en) | 1965-10-02 | 1961-11-08 | Apparatus for two-way speech communication |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT263269B (en) |
CH (2) | CH400245A (en) |
DE (1) | DE1206967B (en) |
GB (1) | GB1002983A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4237339A (en) * | 1977-11-03 | 1980-12-02 | The Post Office | Audio teleconferencing |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1050154A (en) * | 1977-01-14 | 1979-03-06 | Conrad D. Lafrance | Telephone conferencing apparatus |
DE4439146A1 (en) * | 1994-11-03 | 1996-05-09 | Deutsche Telekom Ag | Hands-free telephone for work-place or use with personal computer, video conference etc. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE828714C (en) * | 1948-10-02 | 1952-01-21 | Siemens & Halske A G | Telephone station |
DE1687621U (en) * | 1952-08-04 | 1954-11-18 | Siedle & Soehne G M B H Furtwa | DEVICE FOR A COAXIAL MICROPHONE WITH A SPEAKER. |
-
1961
- 1961-10-30 CH CH1251561A patent/CH400245A/en unknown
- 1961-11-08 GB GB3992161A patent/GB1002983A/en not_active Expired
-
1965
- 1965-10-02 DE DE1965P0026029 patent/DE1206967B/en active Pending
-
1966
- 1966-09-21 CH CH1369066A patent/CH445738A/en unknown
- 1966-09-29 AT AT913766A patent/AT263269B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4237339A (en) * | 1977-11-03 | 1980-12-02 | The Post Office | Audio teleconferencing |
Also Published As
Publication number | Publication date |
---|---|
AT263269B (en) | 1968-07-10 |
DE1206967B (en) | 1965-12-16 |
CH400245A (en) | 1965-10-15 |
CH445738A (en) | 1967-10-31 |
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