patents.google.com

FR1061480A - Acoustic transformation system - Google Patents

  • ️Tue Apr 13 1954

FR1061480A - Acoustic transformation system - Google Patents

Acoustic transformation system

Info

Publication number
FR1061480A
FR1061480A FR1061480DA FR1061480A FR 1061480 A FR1061480 A FR 1061480A FR 1061480D A FR1061480D A FR 1061480DA FR 1061480 A FR1061480 A FR 1061480A Authority
FR
France
Prior art keywords
transformation system
acoustic transformation
acoustic
transformation
Prior art date
1951-08-17
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
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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.)
1951-08-17
Filing date
1952-08-14
Publication date
1954-04-13
1952-08-14 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
1954-04-13 Application granted granted Critical
1954-04-13 Publication of FR1061480A publication Critical patent/FR1061480A/en
Status Expired legal-status Critical Current

Links

  • 230000009466 transformation Effects 0.000 title 1

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
FR1061480D 1951-08-17 1952-08-14 Acoustic transformation system Expired FR1061480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL304777X 1951-08-17

Publications (1)

Publication Number Publication Date
FR1061480A true FR1061480A (en) 1954-04-13

Family

ID=19783449

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1061480D Expired FR1061480A (en) 1951-08-17 1952-08-14 Acoustic transformation system

Country Status (5)

Country Link
BE (1) BE513534A (en)
CH (1) CH304777A (en)
DE (1) DE926498C (en)
FR (1) FR1061480A (en)
GB (1) GB709355A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5036804B2 (en) * 2007-02-28 2012-09-26 株式会社テムコジャパン Vibration pickup type microphone

Also Published As

Publication number Publication date
CH304777A (en) 1955-01-31
GB709355A (en) 1954-05-19
DE926498C (en) 1955-04-18
BE513534A (en)

Similar Documents

Publication Publication Date Title
FR1108100A (en) 1956-01-09 Telecommunication system
FR1079270A (en) 1954-11-29 TV system
FR1092712A (en) 1955-04-26 TV system
FR67318E (en) 1958-02-20 Two-way communication system
FR1071949A (en) 1954-09-07 Adjustment system
FR1066199A (en) 1954-06-02 Acoustic frequency system
FR65373E (en) 1956-02-09 All-relay telephone system
FR1071094A (en) 1954-08-24 Pneumatic helmet system
FR1062795A (en) 1954-04-27 Signal receiver
FR1072591A (en) 1954-09-14 TV system
FR1061480A (en) 1954-04-13 Acoustic transformation system
FR1134358A (en) 1957-04-10 Magnetic system
FR1077626A (en) 1954-11-10 Amplifier system
FR1045905A (en) 1953-12-02 Building construction system
FR1035809A (en) 1953-08-31 Anti-inductive wiring system
FR1040976A (en) 1953-10-20 Pipe denicotinizer system
FR1098059A (en) 1955-07-18 Transmission system
FR1027232A (en) 1953-05-08 Snowshoe system
FR1052161A (en) 1954-01-21 Coupling system
FR1046381A (en) 1953-12-07 Classification system
FR1077428A (en) 1954-11-08 Switch system
FR1017550A (en) 1952-12-11 Amplifier system
FR1008067A (en) 1952-05-13 Amplifier system
FR60188E (en) 1954-09-23 Amplifier system
FR1041963A (en) 1953-10-28 Bucket coupling system