FR605038A - Perfectionnements aux écouteurs-sélecteurs - Google Patents

Perfectionnements aux écouteurs-sélecteurs

Info

Publication number
FR605038A
FR605038A FR605038DA FR605038A FR 605038 A FR605038 A FR 605038A FR 605038D A FR605038D A FR 605038DA FR 605038 A FR605038 A FR 605038A
Authority
FR
France
Prior art keywords
selectors
headphone
selectors improvements
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)
Inventor
Andre Bloch
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 FR605038A publication Critical patent/FR605038A/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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058—Manufacture or assembly
    • H04R1/1075—Mountings of transducers in earphones or headphones
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
FR605038D 1925-10-26 1925-10-26 Perfectionnements aux écouteurs-sélecteurs Expired FR605038A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR605038T 1925-10-26

Publications (1)

Publication Number Publication Date
FR605038A true FR605038A (fr) 1926-05-18

Family

ID=8973695

Family Applications (1)

Application Number Title Priority Date Filing Date
FR605038D Expired FR605038A (fr) 1925-10-26 1925-10-26 Perfectionnements aux écouteurs-sélecteurs

Country Status (3)

Country Link
US (1) US1784172A (fr)
BE (1) BE337525A (fr)
FR (1) FR605038A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614646A (en) * 1952-10-21 Frequency receiving bell with an

Also Published As

Publication number Publication date
BE337525A (fr)
US1784172A (en) 1930-12-09

Similar Documents

Publication Publication Date Title
FR598819A (fr) Perfectionnements aux carburateurs
FR620067A (fr) Perfectionnements aux poinçonneuses-découpeuses
FR605038A (fr) Perfectionnements aux écouteurs-sélecteurs
FR593838A (fr) Perfectionnement aux édredons
FR603022A (fr) Perfectionnements aux tampons
FR608748A (fr) Perfectionnements aux freins
FR605135A (fr) Perfectionnements apportés aux réveils
FR605808A (fr) Perfectionnements apportés aux chausse-pieds
FR608158A (fr) Perfectionnements apportés aux réveils
FR615366A (fr) Perfectionnements aux aéromoteurs
FR601140A (fr) Perfectionnements aux chaussées
FR623232A (fr) Perfectionnements aux carburateurs
FR602495A (fr) Perfectionnements aux carburateurs
FR598436A (fr) Perfectionnements aux porte-plumes
FR596224A (fr) Perfectionnements aux sandales
FR613075A (fr) Perfectionnements aux guêtres
FR621642A (fr) Perfectionnements aux chaussures
FR593123A (fr) Perfectionnements aux chaussures
FR617691A (fr) Perfectionnements aux freins
FR31239E (fr) Perfectionnements aux freins
FR619084A (fr) Perfectionnements aux carburateurs
FR613142A (fr) Perfectionnements aux carburateurs
FR612004A (fr) Perfectionnements aux carburateurs
FR609683A (fr) Perfectionnements aux carburateurs
FR606538A (fr) Perfectionnements aux carburateurs