FR38511E - Acoustic diffuser with elementary warped surfaces with parallel edges - Google Patents

Acoustic diffuser with elementary warped surfaces with parallel edges

Info

Publication number
FR38511E
FR38511E FR38511DA FR38511E FR 38511 E FR38511 E FR 38511E FR 38511D A FR38511D A FR 38511DA FR 38511 E FR38511 E FR 38511E
Authority
FR
France
Prior art keywords
elementary
parallel edges
acoustic diffuser
warped surfaces
warped
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)
Inventor
Louis Lumiere
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
Application granted granted Critical
Publication of FR38511E publication Critical patent/FR38511E/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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Stringed Musical Instruments (AREA)
FR38511D 1929-06-04 1929-12-16 Acoustic diffuser with elementary warped surfaces with parallel edges Expired FR38511E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR547840X 1929-06-04

Publications (1)

Publication Number Publication Date
FR38511E true FR38511E (en) 1931-06-13

Family

ID=8934455

Family Applications (5)

Application Number Title Priority Date Filing Date
FR692095D Expired FR692095A (en) 1929-06-04 1929-06-04 Acoustic diffuser with basic warped surfaces with parallel edges
FR37934D Expired FR37934E (en) 1929-06-04 1929-08-26 Acoustic diffuser with basic warped surfaces with parallel edges
FR38511D Expired FR38511E (en) 1929-06-04 1929-12-16 Acoustic diffuser with elementary warped surfaces with parallel edges
FR38677D Expired FR38677E (en) 1929-06-04 1930-01-10 Acoustic diffuser with basic warped surfaces with parallel edges
FR40003D Expired FR40003E (en) 1929-06-04 1930-09-25 Acoustic diffuser with basic warped surfaces with parallel edges

Family Applications Before (2)

Application Number Title Priority Date Filing Date
FR692095D Expired FR692095A (en) 1929-06-04 1929-06-04 Acoustic diffuser with basic warped surfaces with parallel edges
FR37934D Expired FR37934E (en) 1929-06-04 1929-08-26 Acoustic diffuser with basic warped surfaces with parallel edges

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR38677D Expired FR38677E (en) 1929-06-04 1930-01-10 Acoustic diffuser with basic warped surfaces with parallel edges
FR40003D Expired FR40003E (en) 1929-06-04 1930-09-25 Acoustic diffuser with basic warped surfaces with parallel edges

Country Status (5)

Country Link
US (1) US1796335A (en)
BE (1) BE370732A (en)
DE (1) DE547840C (en)
FR (5) FR692095A (en)
GB (2) GB344290A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2182823A (en) * 1985-11-07 1987-05-20 Midlen Trading Corp Diaphragm and driver for a loudspeaker
CA1284837C (en) * 1987-06-18 1991-06-11 Highwood Audio Inc. Audio transducer
EP1377115B1 (en) * 2002-06-24 2016-01-06 Panasonic Intellectual Property Management Co., Ltd. Loudspeaker diaphragm

Also Published As

Publication number Publication date
FR38677E (en) 1931-06-26
FR40003E (en) 1932-03-21
GB346205A (en) 1931-04-09
FR692095A (en) 1930-10-30
US1796335A (en) 1931-03-17
BE370732A (en)
FR37934E (en) 1931-02-07
GB344290A (en) 1931-03-05
DE547840C (en) 1932-04-07

Similar Documents

Publication Publication Date Title
FR699227A (en) Fan improvements
FR38511E (en) Acoustic diffuser with elementary warped surfaces with parallel edges
FR676564A (en) Fan
FR697229A (en) Improvements in soundproofing materials
FR679513A (en) Compressed air hydro-slider
FR630650A (en) Variable incidence air turbine
FR678884A (en) Electromagnetic speaker with diffuser
FR678122A (en) Crossed-dihedral acoustic diffuser
FR684251A (en) Sieve sieve
FR699228A (en) Fan improvements
FR667554A (en) Fan improvements
FR655114A (en) Acoustic diffuser with prismatic elements
FR661200A (en) Direct reading permeameter
FR680382A (en) Fan
FR671411A (en) Improvement in membrane diffusers
FR652998A (en) Refinements to Diffuser Speakers
FR676905A (en) Table-scale with grid
FR692426A (en) Improvement in sound cinematography
FR692425A (en) Improvement in sound cinematography
FR38232E (en) Improvements to air pumps
FR676291A (en) Felt grille
FR699663A (en) Nerdy
FR722323A (en) Speaking machine with diffuser
FR674480A (en) Surface condenser
FR672609A (en) Surface condenser