DD104891A1 - - Google Patents
Info
- Publication number
- DD104891A1 DD104891A1 DD17231073A DD17231073A DD104891A1 DD 104891 A1 DD104891 A1 DD 104891A1 DD 17231073 A DD17231073 A DD 17231073A DD 17231073 A DD17231073 A DD 17231073A DD 104891 A1 DD104891 A1 DD 104891A1
- Authority
- DD
- German Democratic Republic
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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD17231073A DD104891A1 (ko) | 1973-07-11 | 1973-07-11 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD17231073A DD104891A1 (ko) | 1973-07-11 | 1973-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
DD104891A1 true DD104891A1 (ko) | 1974-03-20 |
Family
ID=5492105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD17231073A DD104891A1 (ko) | 1973-07-11 | 1973-07-11 |
Country Status (1)
Country | Link |
---|---|
DD (1) | DD104891A1 (ko) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2650466A1 (fr) * | 1989-07-18 | 1991-02-01 | Messerschmitt Boelkow Blohm | Microphone de detection et de localisation de sources sonores |
WO2001037519A2 (en) | 1999-11-19 | 2001-05-25 | Gentex Corporation | Vehicle accessory microphone |
US7447320B2 (en) | 2001-02-14 | 2008-11-04 | Gentex Corporation | Vehicle accessory microphone |
US7616768B2 (en) | 2001-02-14 | 2009-11-10 | Gentex Corporation | Vehicle accessory microphone having mechanism for reducing line-induced noise |
US8682005B2 (en) | 1999-11-19 | 2014-03-25 | Gentex Corporation | Vehicle accessory microphone |
-
1973
- 1973-07-11 DD DD17231073A patent/DD104891A1/xx unknown
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2650466A1 (fr) * | 1989-07-18 | 1991-02-01 | Messerschmitt Boelkow Blohm | Microphone de detection et de localisation de sources sonores |
WO2001037519A2 (en) | 1999-11-19 | 2001-05-25 | Gentex Corporation | Vehicle accessory microphone |
EP1230739A2 (en) * | 1999-11-19 | 2002-08-14 | Gentex Corporation | Vehicle accessory microphone |
EP1230739A4 (en) * | 1999-11-19 | 2007-09-26 | Gentex Corp | ACCESSORY MICROPHONE OF VEHICLE |
US8224012B2 (en) | 1999-11-19 | 2012-07-17 | Gentex Corporation | Vehicle accessory microphone |
US8682005B2 (en) | 1999-11-19 | 2014-03-25 | Gentex Corporation | Vehicle accessory microphone |
US7447320B2 (en) | 2001-02-14 | 2008-11-04 | Gentex Corporation | Vehicle accessory microphone |
US7616768B2 (en) | 2001-02-14 | 2009-11-10 | Gentex Corporation | Vehicle accessory microphone having mechanism for reducing line-induced noise |