DE287416C - - Google Patents

Info

Publication number
DE287416C
DE287416C DENDAT287416D DE287416DA DE287416C DE 287416 C DE287416 C DE 287416C DE NDAT287416 D DENDAT287416 D DE NDAT287416D DE 287416D A DE287416D A DE 287416DA DE 287416 C DE287416 C DE 287416C
Authority
DE
Germany
Prior art keywords
sound
throttle
sound box
throttle disc
openings
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.)
Active
Application number
DENDAT287416D
Other languages
German (de)
English (en)
Publication of DE287416C publication Critical patent/DE287416C/de
Active 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
    • H04R1/32—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
    • H04R1/38—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 in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrophonic Musical Instruments (AREA)
DENDAT287416D Active DE287416C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE287416C true DE287416C (enrdf_load_stackoverflow)

Family

ID=542634

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT287416D Active DE287416C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE287416C (enrdf_load_stackoverflow)

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