GB470148A - Improvements in or relating to sound signals transmission systems - Google Patents
Improvements in or relating to sound signals transmission systemsInfo
- Publication number
- GB470148A GB470148A GB30044/36A GB3004436A GB470148A GB 470148 A GB470148 A GB 470148A GB 30044/36 A GB30044/36 A GB 30044/36A GB 3004436 A GB3004436 A GB 3004436A GB 470148 A GB470148 A GB 470148A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- sound signals
- transmission systems
- signals transmission
- microphone
- 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
- 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)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Burglar Alarm Systems (AREA)
- Selective Calling Equipment (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
470,148. Automatic volume control. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Nov. 4. 1936, No. 30044. Convention date, Nov. 4, 1935. [Class 40 (iv)] In a public-address &c. system in which automatic volume control is effected by an auxiliary microphone 2 acting through a rectifier 3 on a main amplifier 4, the auxiliary microphone is permanently fixed at approximately the same distance from the source as the main microphone 1. The auxiliary microphone may be arranged to favour low frequencies.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE470148X | 1935-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB470148A true GB470148A (en) | 1937-08-10 |
Family
ID=6541090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30044/36A Expired GB470148A (en) | 1935-11-04 | 1936-11-04 | Improvements in or relating to sound signals transmission systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB470148A (en) |
-
1936
- 1936-11-04 GB GB30044/36A patent/GB470148A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB777804A (en) | Improvements in or relating to television receivers | |
GB537599A (en) | Video-frequency signal-translating system | |
GB470148A (en) | Improvements in or relating to sound signals transmission systems | |
GB504711A (en) | Improvements in signal-receivers for carrier-telephony systems | |
GB486290A (en) | Improvements in or relating to public address stabilizing systems | |
GB341766A (en) | Improvements in or relating to radio and similar high frequency communication systems | |
GB545599A (en) | Receiving circuit for a signalling system | |
GB482074A (en) | Noise eliminators for wireless receivers | |
GB475189A (en) | Improvements in or relating to television systems | |
GB460198A (en) | Improvements in or relating to radio receivers, particularly for television or the like | |
GB536035A (en) | Improvements in volume control circuit arrangements | |
GB464828A (en) | Improvements in or relating to thermionic valve amplifying systems for television and like transmission systems | |
GB553935A (en) | Improvements in or relating to voice-frequency signalling systems | |
GB414627A (en) | Improvements in or relating to radio receivers | |
GB474015A (en) | Improvements in or relating to radio direction finding installations | |
GB487984A (en) | Improvements in or relating to radio direction finders | |
GB548218A (en) | Improvements in or relating to aerial tuning systems | |
GB484218A (en) | Improvements in or relating to thermionic valve circuits | |
CA355289A (en) | Sound direction, transmission and reception system | |
GB504029A (en) | Improvements in or relating to wireless receivers | |
GB473776A (en) | Improvements in or relating to public address systems | |
GB463748A (en) | Improvements relating to muting in radio receivers | |
GB403377A (en) | Improvements relating to radio direction finders | |
GB729732A (en) | Improvements in and relating to automatic gain control circuits | |
GB354158A (en) | Improvements in or relating to bearing-finding aerial arrangements |