NL245178A - - Google Patents
Info
- Publication number
- NL245178A NL245178A NL245178DA NL245178A NL 245178 A NL245178 A NL 245178A NL 245178D A NL245178D A NL 245178DA NL 245178 A NL245178 A NL 245178A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
- H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Amplitude Modulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US774173A US3030450A (en) | 1958-11-17 | 1958-11-17 | Band compression system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL245178A true NL245178A (ja) |
Family
ID=25100462
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL245178D NL245178A (ja) | 1958-11-17 | ||
| NL127390D NL127390C (ja) | 1958-11-17 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL127390D NL127390C (ja) | 1958-11-17 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3030450A (ja) |
| BE (1) | BE584353A (ja) |
| DE (1) | DE1114851B (ja) |
| FR (1) | FR1239222A (ja) |
| GB (1) | GB937404A (ja) |
| NL (2) | NL127390C (ja) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL272110A (nl) * | 1960-12-08 | 1964-08-25 | Jean Albert Dreyfus | Drukaandrijving |
| NL272809A (ja) * | 1960-12-27 | |||
| US3167710A (en) * | 1961-02-01 | 1965-01-26 | Jersey Prod Res Co | System for analysis of electrical signals including parallel filter channels |
| US3165734A (en) * | 1961-11-02 | 1965-01-12 | Grodzinsky Samuel | Screw noise simulation technique |
| US3411089A (en) * | 1962-06-28 | 1968-11-12 | Raytheon Co | Communication system |
| US3431356A (en) * | 1965-06-04 | 1969-03-04 | Integrated Electronic Corp | Apparatus and method for reconstructing speech |
| US3420955A (en) * | 1965-11-19 | 1969-01-07 | Bell Telephone Labor Inc | Automatic peak selector |
| US3431362A (en) * | 1966-04-22 | 1969-03-04 | Bell Telephone Labor Inc | Voice-excited,bandwidth reduction system employing pitch frequency pulses generated by unencoded baseband signal |
| US3471644A (en) * | 1966-05-02 | 1969-10-07 | Massachusetts Inst Technology | Voice vocoding and transmitting system |
| US3448216A (en) * | 1966-08-03 | 1969-06-03 | Bell Telephone Labor Inc | Vocoder system |
| DE1537596B1 (de) * | 1967-11-14 | 1970-09-03 | Michel Copel | Verfahren und Schaltungsanordnung zum Verbessern der Verstaendlichkeit frequenzverzerrter Sprache |
| US3541266A (en) * | 1968-09-30 | 1970-11-17 | Octronix Inc | Bandwidth compressor and expander |
| US3743787A (en) * | 1969-09-02 | 1973-07-03 | H Fujisaki | Speech signal transmission systems utilizing a non-linear circuit in the base band channel |
| US3622714A (en) * | 1969-09-02 | 1971-11-23 | Bell Telephone Labor Inc | Telephonic transmission using complementary comb filters |
| IT979348B (it) * | 1972-02-24 | 1974-09-30 | Int Standard Electric Corp | Sistema per trasferire segnali acustici ad ampia banda |
| US3914554A (en) * | 1973-05-18 | 1975-10-21 | Bell Telephone Labor Inc | Communication system employing spectrum folding |
| US3946162A (en) * | 1973-06-04 | 1976-03-23 | International Standard Electric Corporation | System for transferring wideband sound signals |
| FR2238412A5 (ja) * | 1973-07-20 | 1975-02-14 | Trt Telecom Radio Electr | |
| US3988546A (en) * | 1974-09-13 | 1976-10-26 | General Signal Corporation | System for audibly recognizing an aurally unclassifiable signal |
| GB1559897A (en) * | 1977-03-15 | 1980-01-30 | Post Office | Multiplexing speech |
| US4181822A (en) * | 1978-03-07 | 1980-01-01 | Bell & Howell Company | Bandsplitter systems |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2640880A (en) * | 1953-06-02 | Speech communication system | ||
| DE722607C (de) * | 1939-01-14 | 1942-07-22 | Karl Otto Schmidt Dr | Verfahren zur besseren Ausnutzung des UEbertragungsweges |
| US2151091A (en) * | 1935-10-30 | 1939-03-21 | Bell Telephone Labor Inc | Signal transmission |
| US2817711A (en) * | 1954-05-10 | 1957-12-24 | Bell Telephone Labor Inc | Band compression system |
-
0
- NL NL245178D patent/NL245178A/xx unknown
- NL NL127390D patent/NL127390C/xx active
-
1958
- 1958-11-17 US US774173A patent/US3030450A/en not_active Expired - Lifetime
-
1959
- 1959-10-26 DE DEW26608A patent/DE1114851B/de active Pending
- 1959-10-29 FR FR808833A patent/FR1239222A/fr not_active Expired
- 1959-11-05 BE BE584353A patent/BE584353A/fr unknown
- 1959-11-10 GB GB38054/59A patent/GB937404A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1239222A (fr) | 1960-08-19 |
| GB937404A (en) | 1963-09-18 |
| DE1114851B (de) | 1961-10-12 |
| NL127390C (ja) | |
| US3030450A (en) | 1962-04-17 |
| BE584353A (fr) | 1960-03-01 |