NL76813C - - Google Patents
Info
- Publication number
- NL76813C NL76813C NL76813DA NL76813C NL 76813 C NL76813 C NL 76813C NL 76813D A NL76813D A NL 76813DA NL 76813 C NL76813 C NL 76813C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/22—Automatic control in amplifiers having discharge tubes
- H03G3/24—Control dependent upon ambient noise level or sound level
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Control Of Amplification And Gain Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL265350X | 1947-04-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL76813C true NL76813C (https=) |
Family
ID=19781693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL76813D NL76813C (https=) | 1947-04-29 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH265350A (https=) |
| NL (1) | NL76813C (https=) |
-
0
- NL NL76813D patent/NL76813C/xx active
-
1948
- 1948-04-27 CH CH265350D patent/CH265350A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH265350A (de) | 1949-11-30 |