DE133386C - - Google Patents

Info

Publication number
DE133386C
DE133386C DENDAT133386D DE133386DA DE133386C DE 133386 C DE133386 C DE 133386C DE NDAT133386 D DENDAT133386 D DE NDAT133386D DE 133386D A DE133386D A DE 133386DA DE 133386 C DE133386 C DE 133386C
Authority
DE
Germany
Prior art keywords
sound
grooves
cover
sound cover
wall
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
DENDAT133386D
Other languages
German (de)
English (en)
Publication of DE133386C publication Critical patent/DE133386C/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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
DENDAT133386D Active DE133386C (https=)

Publications (1)

Publication Number Publication Date
DE133386C true DE133386C (https=)

Family

ID=401590

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT133386D Active DE133386C (https=)

Country Status (1)

Country Link
DE (1) DE133386C (https=)

Similar Documents

Publication Publication Date Title
DE133386C (https=)
DE513803C (de) Mehrfach-Reflex-Schalltrichter
DE517737C (de) Schallgeraet
DE136242C (https=)
CH289406A (de) Spielzeug mit Geräusch- und Klangvorrichtung.
DE836499C (de) Mikrofonanordnung
DE425367C (de) Schallverstaerker fuer Sprechmaschinen
DE599169C (de) Koernermikrophon mit senkrecht zur Schallrichtung vom Strom durchflossener Koernerfuellung
DE200890C (de) Stethoskop
DE381972C (de) Schrank- oder runder tischfoermiger Sprechapparat
DE409293C (de) Schalltrichter fuer Schallwiedergabevorrichtungen, Sprechmaschinen o. dgl.
DE437387C (de) Tonwiedergabevorrichtung, Sprechmaschine o. dgl.
DE402760C (de) Sprechmaschine
DE2822680A1 (de) Elektroakustischer wandler
DE267532C (https=)
DE211759C (https=)
DE324690C (de) Schallwellentraeger
DE23685C (de) Neuerung an Handharmonikas mit Orgelpfeifen
DE281152C (https=)
DE844468C (de) Trichterlautsprecher, insbesondere mit Druckkammersystem
DE350502C (de) Mikrophon fuer geraeuschvolle Plaetze, zu dessen beiden Membranseiten Schallwellen aus entfernten Schallquellen freien Zugang haben
DE131067C (https=)
DE540818C (de) Blasmusikinstrument
DE345263C (https=)
DE560630C (de) Schalltrichter, insbesondere fuer Sprechmaschinen