DE249816C - - Google Patents

Info

Publication number
DE249816C
DE249816C DENDAT249816D DE249816DA DE249816C DE 249816 C DE249816 C DE 249816C DE NDAT249816 D DENDAT249816 D DE NDAT249816D DE 249816D A DE249816D A DE 249816DA DE 249816 C DE249816 C DE 249816C
Authority
DE
Germany
Prior art keywords
throttle body
sound
spherical
nozzle
throttle
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
DENDAT249816D
Other languages
German (de)
English (en)
Publication of DE249816C publication Critical patent/DE249816C/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)
  • Pivots And Pivotal Connections (AREA)
DENDAT249816D Active DE249816C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE249816C true DE249816C (enrdf_load_stackoverflow)

Family

ID=508402

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT249816D Active DE249816C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE249816C (enrdf_load_stackoverflow)

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