FR657563A - Perfectionnements aux amplifications acoustiques - Google Patents

Perfectionnements aux amplifications acoustiques

Info

Publication number
FR657563A
FR657563A FR657563DA FR657563A FR 657563 A FR657563 A FR 657563A FR 657563D A FR657563D A FR 657563DA FR 657563 A FR657563 A FR 657563A
Authority
FR
France
Prior art keywords
amplifications
acoustic
acoustic amplifications
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
Joseph Bouteille
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 FR657563A publication Critical patent/FR657563A/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; ELECTRIC HEARING AIDS; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
FR657563D 1928-06-08 1927-11-28 Perfectionnements aux amplifications acoustiques Expired FR657563A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR35692T 1928-06-08

Publications (1)

Publication Number Publication Date
FR657563A true FR657563A (fr) 1929-05-24

Family

ID=8672539

Family Applications (2)

Application Number Title Priority Date Filing Date
FR657563D Expired FR657563A (fr) 1928-06-08 1927-11-28 Perfectionnements aux amplifications acoustiques
FR35692D Expired FR35692E (fr) 1928-06-08 1928-06-08 Perfectionnements aux ampliflcations acoustiques

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR35692D Expired FR35692E (fr) 1928-06-08 1928-06-08 Perfectionnements aux ampliflcations acoustiques

Country Status (1)

Country Link
FR (2) FR657563A (fr)

Also Published As

Publication number Publication date
FR35692E (fr) 1930-03-27

Similar Documents

Publication Publication Date Title
FR651695A (fr) Perfectionnements aux manomètres
FR640136A (fr) Perfectionnements apportés aux clés
FR633526A (fr) Perfectionnements apportés aux herses
FR629132A (fr) Perfectionnements aux servo-freins
FR645103A (fr) Perfectionnements aux téléphones acoustiques
FR666167A (fr) Perfectionnements aux amplificateurs
FR656128A (fr) Perfectionnements apportés aux alliages
FR646021A (fr) Perfectionnements apportés aux pompes alternatives
FR647833A (fr) Perfectionnements aux aéromoteurs
FR609378A (fr) Perfectionnements aux norias
FR639144A (fr) Perfectionnements apportés aux oeillères
FR640863A (fr) Perfectionnements aux norias
FR628323A (fr) Perfectionnements aux dynamos-démarreurs
FR639811A (fr) Perfectionnements aux suspensoirs
FR660753A (fr) Perfectionnements aux micro-téléphones
FR660479A (fr) Perfectionnements aux microtéléphones
FR631979A (fr) Perfectionnements apportés aux réveils
FR657151A (fr) Perfectionnements apportés aux galons-moulures
FR657896A (fr) Perfectionnements aux
FR639703A (fr) Perfectionnements aux norias
FR657148A (fr) Perfectionnements relatifs aux stylographes
FR644552A (fr) Perfectionnements aux dispositifs acoustiques
FR666182A (fr) Perfectionnements aux masseuses mécaniques
FR650403A (fr) Perfectionnements aux phonographes
FR617379A (fr) Perfectionnements apportés aux hauts-parleurs