AU490108B2 - Duplex communication system - Google Patents
Duplex communication systemInfo
- Publication number
- AU490108B2 AU490108B2 AU64206/74A AU6420674A AU490108B2 AU 490108 B2 AU490108 B2 AU 490108B2 AU 64206/74 A AU64206/74 A AU 64206/74A AU 6420674 A AU6420674 A AU 6420674A AU 490108 B2 AU490108 B2 AU 490108B2
- Authority
- AU
- Australia
- Prior art keywords
- communication system
- duplex communication
- duplex
- communication
- 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
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU64206/74A AU490108B2 (en) | 1974-01-04 | 1974-01-04 | Duplex communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU64206/74A AU490108B2 (en) | 1974-01-04 | 1974-01-04 | Duplex communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
AU490108B2 true AU490108B2 (en) | 1975-07-10 |
AU6420674A AU6420674A (en) | 1975-07-10 |
Family
ID=3748916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU64206/74A Expired AU490108B2 (en) | 1974-01-04 | 1974-01-04 | Duplex communication system |
Country Status (1)
Country | Link |
---|---|
AU (1) | AU490108B2 (en) |
-
1974
- 1974-01-04 AU AU64206/74A patent/AU490108B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU6420674A (en) | 1975-07-10 |
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