BE389811A - - Google Patents
Info
- Publication number
- BE389811A BE389811A BE389811DA BE389811A BE 389811 A BE389811 A BE 389811A BE 389811D A BE389811D A BE 389811DA BE 389811 A BE389811 A BE 389811A
- Authority
- BE
- Belgium
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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/08—Microphones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
-
- 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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
-
- 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
- H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for 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
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US526598A US1885001A (en) | 1931-03-31 | 1931-03-31 | Apparatus for converting sound vibrations into electrical variations |
| US612466A US1892645A (en) | 1931-03-31 | 1932-05-20 | Sound pick-up device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE389811A true BE389811A (US06277897-20010821-C00025.png) | 1932-08-31 |
Family
ID=24097986
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE396402D BE396402A (US06277897-20010821-C00025.png) | 1931-03-31 | ||
| BE387520D BE387520A (US06277897-20010821-C00025.png) | 1931-03-31 | 1932-03-31 | |
| BE389811D BE389811A (US06277897-20010821-C00025.png) | 1931-03-31 | 1932-07-13 | |
| BE428292D BE428292A (US06277897-20010821-C00025.png) | 1931-03-31 | 1938-05-27 |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE396402D BE396402A (US06277897-20010821-C00025.png) | 1931-03-31 | ||
| BE387520D BE387520A (US06277897-20010821-C00025.png) | 1931-03-31 | 1932-03-31 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE428292D BE428292A (US06277897-20010821-C00025.png) | 1931-03-31 | 1938-05-27 |
Country Status (6)
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2239503A (en) * | 1938-08-05 | 1941-04-22 | Rca Corp | Sound pickup apparatus |
| US2476396A (en) * | 1939-12-28 | 1949-07-19 | Rca Corp | Magnetic equalization of sensitivity in ribbon microphone assemblies |
| US2417927A (en) * | 1943-03-22 | 1947-03-25 | Automatic Elect Lab | Sound direction finder |
| GB611209A (en) * | 1944-08-29 | 1948-10-27 | Standard Telephones Cables Ltd | Improvements in or relating to microphones |
| US2544536A (en) * | 1947-05-28 | 1951-03-06 | Rca Corp | Microphone |
| US2552311A (en) * | 1948-08-28 | 1951-05-08 | Rca Corp | Ribbon support for high fidelity electroacoustical sound transducers |
| DE1047250B (de) * | 1953-01-22 | 1958-12-24 | Alexander Schaaf | Elektroakustischer Wandler (Mikrofon und Lautsprecher) mit einer nach dem elektrostatischen Prinzip arbeitenden Membran |
| CN101080944A (zh) * | 2004-10-21 | 2007-11-28 | 罗伯特·J·克罗利 | 带式声换能器设备 |
| US7936894B2 (en) * | 2004-12-23 | 2011-05-03 | Motorola Mobility, Inc. | Multielement microphone |
| US9800979B2 (en) * | 2013-11-21 | 2017-10-24 | Ghaffari Mohsen | Tunable ribbon microphone |
| US9877110B2 (en) | 2014-12-29 | 2018-01-23 | Michael Patrick Timmins | Ribbon support system for electrodynamic microphone |
| US10573291B2 (en) | 2016-12-09 | 2020-02-25 | The Research Foundation For The State University Of New York | Acoustic metamaterial |
-
0
- BE BE396402D patent/BE396402A/xx unknown
-
1931
- 1931-03-31 US US526598A patent/US1885001A/en not_active Expired - Lifetime
-
1932
- 1932-03-18 GB GB8158/32A patent/GB386478A/en not_active Expired
- 1932-03-21 FR FR733929D patent/FR733929A/fr not_active Expired
- 1932-03-31 BE BE387520D patent/BE387520A/xx unknown
- 1932-05-20 US US612466A patent/US1892645A/en not_active Expired - Lifetime
- 1932-07-13 BE BE389811D patent/BE389811A/xx unknown
-
1933
- 1933-04-04 US US66444133 patent/USRE19115E/en not_active Expired
- 1933-05-06 GB GB13251/33A patent/GB405497A/en not_active Expired
- 1933-05-17 NL NL65339A patent/NL39328C/xx active
- 1933-05-21 DE DER87990D patent/DE607620C/de not_active Expired
-
1936
- 1936-02-18 DE DER95527D patent/DE656210C/de not_active Expired
-
1938
- 1938-05-27 BE BE428292D patent/BE428292A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE607620C (de) | 1935-01-03 |
| US1885001A (en) | 1932-10-25 |
| US1892645A (en) | 1932-12-27 |
| GB405497A (en) | 1934-02-08 |
| BE396402A (US06277897-20010821-C00025.png) | |
| BE428292A (US06277897-20010821-C00025.png) | 1938-08-31 |
| FR733929A (fr) | 1932-10-14 |
| USRE19115E (en) | 1934-03-13 |
| GB386478A (en) | 1933-01-19 |
| BE387520A (US06277897-20010821-C00025.png) | 1932-05-31 |
| DE656210C (de) | 1938-01-31 |
| NL39328C (US06277897-20010821-C00025.png) | 1936-11-16 |
