GB645343A - Improvements in apparatus or systems for transmitting electric signals - Google Patents

Improvements in apparatus or systems for transmitting electric signals

Info

Publication number
GB645343A
GB645343A GB97/47A GB9747A GB645343A GB 645343 A GB645343 A GB 645343A GB 97/47 A GB97/47 A GB 97/47A GB 9747 A GB9747 A GB 9747A GB 645343 A GB645343 A GB 645343A
Authority
GB
United Kingdom
Prior art keywords
frequency
frequencies
circuit
range
response
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
Application number
GB97/47A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HERMON HOSNER SCOTT
Original Assignee
HERMON HOSNER SCOTT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HERMON HOSNER SCOTT filed Critical HERMON HOSNER SCOTT
Publication of GB645343A publication Critical patent/GB645343A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1291—Current or voltage controlled filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/18—Automatic control in untuned amplifiers
    • H03G5/20—Automatic control in untuned amplifiers having discharge tubes

Landscapes

  • Filters And Equalizers (AREA)
  • Amplifiers (AREA)
  • Networks Using Active Elements (AREA)
GB97/47A 1946-01-17 1947-01-01 Improvements in apparatus or systems for transmitting electric signals Expired GB645343A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US645343XA 1946-01-17 1946-01-17

Publications (1)

Publication Number Publication Date
GB645343A true GB645343A (en) 1950-11-01

Family

ID=22056633

Family Applications (2)

Application Number Title Priority Date Filing Date
GB97/47A Expired GB645343A (en) 1946-01-17 1947-01-01 Improvements in apparatus or systems for transmitting electric signals
GB545/47A Expired GB643662A (en) 1946-01-17 1947-01-07 Electric filter

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB545/47A Expired GB643662A (en) 1946-01-17 1947-01-07 Electric filter

Country Status (3)

Country Link
US (1) US2606973A (US20110158925A1-20110630-C00042.png)
BE (2) BE420493A (US20110158925A1-20110630-C00042.png)
GB (2) GB645343A (US20110158925A1-20110630-C00042.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8712076B2 (en) 2012-02-08 2014-04-29 Dolby Laboratories Licensing Corporation Post-processing including median filtering of noise suppression gains
US9173025B2 (en) 2012-02-08 2015-10-27 Dolby Laboratories Licensing Corporation Combined suppression of noise, echo, and out-of-location signals

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774043A (en) * 1953-03-03 1956-12-11 Jr Oswald G Villard Frequency selective apparatus
US2852750A (en) * 1955-02-25 1958-09-16 Rca Corp Delay line
US3182271A (en) * 1960-12-15 1965-05-04 Aiken William Ross Tone control circuit for emphasizing low volume high and low frequency signals
JPS499371B1 (US20110158925A1-20110630-C00042.png) * 1968-07-19 1974-03-04
US3688010A (en) * 1970-06-11 1972-08-29 Alfred B Freeman Tone modulation system
US3678416A (en) * 1971-07-26 1972-07-18 Richard S Burwen Dynamic noise filter having means for varying cutoff point
US4014237A (en) * 1972-03-01 1977-03-29 Milde Karl F Jr Musical note detecting apparatus
US4584880A (en) * 1984-06-04 1986-04-29 Dymax Corporation Tissue signature tracking tranceiver
US4809338A (en) * 1985-07-05 1989-02-28 Harman International Industries, Incorporated Automotive sound system
US4759065A (en) * 1986-09-22 1988-07-19 Harman International Industries, Incorporated Automotive sound system
US5471527A (en) * 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947822A (en) * 1931-04-15 1934-02-20 Rca Corp Automatic tone control
US1950759A (en) * 1931-05-25 1934-03-13 Frederick E Terman Variable reactance circuit
US2017270A (en) * 1932-10-19 1935-10-15 Rca Corp Electronic tone control
US2002216A (en) * 1933-06-07 1935-05-21 Bell Telephone Labor Inc Wave filter
US2072708A (en) * 1934-08-04 1937-03-02 Hazeltine Corp Amplification control
US2053841A (en) * 1935-08-05 1936-09-08 Continental Oil Co Method and apparatus for making geophysical explorations
US2148030A (en) * 1936-07-25 1939-02-21 Rca Corp Automatic tone control system
US2263683A (en) * 1936-08-28 1941-11-25 Crosley Corp Expander and limiter circuits
US2369952A (en) * 1943-10-23 1945-02-20 Gen Electric Background noise suppressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8712076B2 (en) 2012-02-08 2014-04-29 Dolby Laboratories Licensing Corporation Post-processing including median filtering of noise suppression gains
US9173025B2 (en) 2012-02-08 2015-10-27 Dolby Laboratories Licensing Corporation Combined suppression of noise, echo, and out-of-location signals

Also Published As

Publication number Publication date
US2606973A (en) 1952-08-12
BE420493A (US20110158925A1-20110630-C00042.png)
BE470828A (US20110158925A1-20110630-C00042.png)
GB643662A (en) 1950-09-27

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