BE425730A - - Google Patents

Info

Publication number
BE425730A
BE425730A BE425730DA BE425730A BE 425730 A BE425730 A BE 425730A BE 425730D A BE425730D A BE 425730DA BE 425730 A BE425730 A BE 425730A
Authority
BE
Belgium
Application number
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.)
Publication of BE425730A publication Critical patent/BE425730A/xx

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)
  • Diaphragms For Electromechanical Transducers (AREA)
BE425730D 1937-01-14 BE425730A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL495240X 1937-01-14

Publications (1)

Publication Number Publication Date
BE425730A true BE425730A (enrdf_load_stackoverflow)

Family

ID=19786727

Family Applications (1)

Application Number Title Priority Date Filing Date
BE425730D BE425730A (enrdf_load_stackoverflow) 1937-01-14

Country Status (3)

Country Link
BE (1) BE425730A (enrdf_load_stackoverflow)
FR (1) FR832031A (enrdf_load_stackoverflow)
GB (1) GB495240A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR832031A (fr) 1938-09-20
GB495240A (en) 1938-11-09

Similar Documents

Publication Publication Date Title
AT151505B (enrdf_load_stackoverflow)
BE420085R (enrdf_load_stackoverflow)
BE425730A (enrdf_load_stackoverflow)
BE131631A (enrdf_load_stackoverflow)
BE235779A (enrdf_load_stackoverflow)
BE386746A (enrdf_load_stackoverflow)
BE412505A (enrdf_load_stackoverflow)
BE413076A (enrdf_load_stackoverflow)
BE417149A (enrdf_load_stackoverflow)
BE417582A (enrdf_load_stackoverflow)
BE418783A (enrdf_load_stackoverflow)
BE419342A (enrdf_load_stackoverflow)
BE419443A (enrdf_load_stackoverflow)
BE419523A (enrdf_load_stackoverflow)
BE419588A (enrdf_load_stackoverflow)
BE419666A (enrdf_load_stackoverflow)
BE419783A (enrdf_load_stackoverflow)
BE419812A (enrdf_load_stackoverflow)
BE419835A (enrdf_load_stackoverflow)
BE419889A (enrdf_load_stackoverflow)
BE419979A (enrdf_load_stackoverflow)
BE420057A (enrdf_load_stackoverflow)
BE420089A (enrdf_load_stackoverflow)
BE420107A (enrdf_load_stackoverflow)
BE420365A (enrdf_load_stackoverflow)