GB1228795A - - Google Patents

Info

Publication number
GB1228795A
GB1228795A GB1228795DA GB1228795A GB 1228795 A GB1228795 A GB 1228795A GB 1228795D A GB1228795D A GB 1228795DA GB 1228795 A GB1228795 A GB 1228795A
Authority
GB
United Kingdom
Prior art keywords
khz
control amplifier
fed
pass filter
signal path
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
Other languages
English (en)
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 filed Critical
Publication of GB1228795A publication Critical patent/GB1228795A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
GB1228795D 1967-05-31 1968-05-29 Expired GB1228795A (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR108518 1967-05-31

Publications (1)

Publication Number Publication Date
GB1228795A true GB1228795A (https=) 1971-04-21

Family

ID=8632001

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1228795D Expired GB1228795A (https=) 1967-05-31 1968-05-29

Country Status (1)

Country Link
GB (1) GB1228795A (https=)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747821A1 (de) * 1976-11-08 1978-05-11 Philips Nv Verstaerkeranordnung fuer akustische signale mit mitteln zum unterdruecken unerwuenschter stoersignale
EP0235848A1 (en) * 1986-02-18 1987-09-09 Koninklijke Philips Electronics N.V. Automatically controlled amplifier arrangement
US5371803A (en) * 1990-08-31 1994-12-06 Bellsouth Corporation Tone reduction circuit for headsets
US5701352A (en) * 1994-07-14 1997-12-23 Bellsouth Corporation Tone suppression automatic gain control for a headset

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747821A1 (de) * 1976-11-08 1978-05-11 Philips Nv Verstaerkeranordnung fuer akustische signale mit mitteln zum unterdruecken unerwuenschter stoersignale
EP0235848A1 (en) * 1986-02-18 1987-09-09 Koninklijke Philips Electronics N.V. Automatically controlled amplifier arrangement
US5371803A (en) * 1990-08-31 1994-12-06 Bellsouth Corporation Tone reduction circuit for headsets
US5701352A (en) * 1994-07-14 1997-12-23 Bellsouth Corporation Tone suppression automatic gain control for a headset

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees