FR967972A - Expanseur sonore - Google Patents

Expanseur sonore

Info

Publication number
FR967972A
FR967972A FR967972DA FR967972A FR 967972 A FR967972 A FR 967972A FR 967972D A FR967972D A FR 967972DA FR 967972 A FR967972 A FR 967972A
Authority
FR
France
Prior art keywords
sound expander
expander
sound
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)
French (fr)
Inventor
Pierre Cornet
Jacques Boisvieux
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.)
Sadir Carpentier SA
Original Assignee
Sadir Carpentier SA
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 Sadir Carpentier SA filed Critical Sadir Carpentier SA
Application granted granted Critical
Publication of FR967972A publication Critical patent/FR967972A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H01Q21/12—Parallel arrangements of substantially straight elongated conductive units
    • H01Q21/14—Adcock antennas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/04—Details
    • G01S3/12—Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H03G7/005—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using discontinuously variable devices, e.g. switch-operated

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Multimedia (AREA)
FR967972D 1948-06-14 1948-06-14 Expanseur sonore Expired FR967972A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR967973T 1948-06-14

Publications (1)

Publication Number Publication Date
FR967972A true FR967972A (fr) 1950-11-16

Family

ID=9501010

Family Applications (3)

Application Number Title Priority Date Filing Date
FR967972D Expired FR967972A (fr) 1948-06-14 1948-06-14 Expanseur sonore
FR967973D Expired FR967973A (fr) 1948-06-14 1948-06-14 Système d'aérien directif
FR967971D Expired FR967971A (fr) 1948-06-14 1948-06-14 Perfectionnements au système de radiogoniométrie

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR967973D Expired FR967973A (fr) 1948-06-14 1948-06-14 Système d'aérien directif
FR967971D Expired FR967971A (fr) 1948-06-14 1948-06-14 Perfectionnements au système de radiogoniométrie

Country Status (2)

Country Link
FR (3) FR967972A (forum.php)
IT (2) IT454184A (forum.php)

Also Published As

Publication number Publication date
IT454410A (forum.php)
IT454184A (forum.php)
FR967971A (fr) 1950-11-16
FR967973A (fr) 1950-11-16

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