FR790599A - Improvement in the acoustics of speaking machines - Google Patents

Improvement in the acoustics of speaking machines

Info

Publication number
FR790599A
FR790599A FR790599DA FR790599A FR 790599 A FR790599 A FR 790599A FR 790599D A FR790599D A FR 790599DA FR 790599 A FR790599 A FR 790599A
Authority
FR
France
Prior art keywords
acoustics
improvement
speaking machines
speaking
machines
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
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.)
P A ZAHLEN
Original Assignee
P A ZAHLEN
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 P A ZAHLEN filed Critical P A ZAHLEN
Application granted granted Critical
Publication of FR790599A publication Critical patent/FR790599A/en
Expired legal-status Critical Current

Links

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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR790599D 1935-05-28 1935-05-28 Improvement in the acoustics of speaking machines Expired FR790599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR790599T 1935-05-28

Publications (1)

Publication Number Publication Date
FR790599A true FR790599A (en) 1935-11-23

Family

ID=9222906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR790599D Expired FR790599A (en) 1935-05-28 1935-05-28 Improvement in the acoustics of speaking machines

Country Status (1)

Country Link
FR (1) FR790599A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610694A (en) * 1944-05-30 1952-09-16 Hartford Nat Bank & Trust Co Stereophonic reproduction apparatus
FR2605133A1 (en) * 1986-10-08 1988-04-15 Bigot Jacques Multidirectional sound deflector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610694A (en) * 1944-05-30 1952-09-16 Hartford Nat Bank & Trust Co Stereophonic reproduction apparatus
FR2605133A1 (en) * 1986-10-08 1988-04-15 Bigot Jacques Multidirectional sound deflector

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