FR1074226A - Résistance acoustique - Google Patents

Résistance acoustique

Info

Publication number
FR1074226A
FR1074226A FR1074226DA FR1074226A FR 1074226 A FR1074226 A FR 1074226A FR 1074226D A FR1074226D A FR 1074226DA FR 1074226 A FR1074226 A FR 1074226A
Authority
FR
France
Prior art keywords
acoustic resistance
acoustic
resistance
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)
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.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1074226A publication Critical patent/FR1074226A/fr
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 

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR1074226D 1952-04-03 1953-04-01 Résistance acoustique Expired FR1074226A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1074226X 1952-04-03

Publications (1)

Publication Number Publication Date
FR1074226A true FR1074226A (fr) 1954-10-04

Family

ID=19868391

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1074226D Expired FR1074226A (fr) 1952-04-03 1953-04-01 Résistance acoustique

Country Status (1)

Country Link
FR (1) FR1074226A (fr)

Similar Documents

Publication Publication Date Title
FR1052935A (fr) Fauteuil perfectionné
FR1074226A (fr) Résistance acoustique
FR1089747A (fr) Immeuble perfectionné
CH319454A (it) Camiciotto
AT178889B (de) Läuterhahn
AT179424B (de) Libelle
ES33275Y (es) Timbre-empuñadura perfeccionado
ES29604Y (es) Pozal perfeccionado
ES33342Y (es) Armónica perfeccionada
ES29880Y (es) Grifo perfeccionado
ES32288Y (es) Grifo perfeccionado
ES30906Y (es) Polvera perfeccionada
ES33716Y (es) Polvera perfeccionada
ES33237Y (es) Ventilador perfeccionado
FR1052230A (fr) Piano
ES33439Y (es) Encendedor perfeccionado
ES31177Y (es) Pantalla perfeccionada
FR1085382A (fr) Poêle
ES30184Y (es) Mariposa perfeccionada
AT179913B (de) Schwedenreuter
ES32455Y (es) Armario-cama
ES30287Y (es) Caballete-soporte
ES29633Y (es) Esponja-escoba
ES29645Y (es) Rosarios-estuche
ES31232Y (es) Soporte-florero