DE539836C - Sound generator without funnel - Google Patents

Sound generator without funnel

Info

Publication number
DE539836C
DE539836C DEL70773D DEL0070773D DE539836C DE 539836 C DE539836 C DE 539836C DE L70773 D DEL70773 D DE L70773D DE L0070773 D DEL0070773 D DE L0070773D DE 539836 C DE539836 C DE 539836C
Authority
DE
Germany
Prior art keywords
sound
funnel
membrane
sound generator
channels
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
DEL70773D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LINDSTROEM AG CARL
Original Assignee
LINDSTROEM AG CARL
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 date
Priority to DEL70773D priority Critical patent/DE539836C/en
Priority claimed from DEL70476D external-priority patent/DE515935C/en
Application granted granted Critical
Publication of DE539836C publication Critical patent/DE539836C/en
Expired 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
    • 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)
  • Building Environments (AREA)

Description

Schallerzeuger ohne Trichter Gegenstand des Hauptpatentes 515 935 ist ein Schallerzeuger ohne Trichter mit doppelseitiger Ausnutzung der Membran, bei dem die rückwärtige Schallstrahlung durch Kanäle in die Hauptschallrichtung geleitet ist, und kennzeichnet sich gegenüber den bekannten Schallerzeugern dadurch, daß der Gesamtquerschnitt dieser Kanäle mit dem Membranquerschnitt gleiche Größe besitzt.Sound generator without funnel is the subject of main patent 515 935 is a sound generator without a funnel with double-sided utilization of the membrane, in which the rear sound radiation through channels in the main direction of sound is conducted, and is characterized compared to the known sound generators by that the total cross-section of these channels is the same size as the membrane cross-section owns.

Der Schallerzeuger ohne Trichter mit doppelseitiger Ausnutzung der Membran, bei dem die rückwärtige Schallstrahlung durch die Kanäle in die Hauptschallrichtung geleitet ist, nach der Erfindung betrifft eine weitere Ausbildung des Gegenstandes des Hauptpatentes und kennzeichnet sich dadurch, daß an Stelle mehrerer Kanäle eine einzige schalenartig die Rückseite der Membran umgebende Schallführung vorgesehen ist.The sound generator without a funnel with double-sided use of the Membrane in which the rear sound radiation through the channels in the main direction of sound is directed, according to the invention relates to a further embodiment of the object of the main patent and is characterized by the fact that instead of several channels one only shell-like sound guide surrounding the back of the membrane is provided is.

Auf der Zeichnung ist eine beispielsweise Ausführungsform unter Weglassung aller nicht zum Verständnis erforderlichen Teile in Abb. i in einer Vorderansicht (vom Schallraum aus) und in Abb. a in einem Längsschnitt dargestellt. Der Schallerzeuger (Membran a) kann in beliebiger Form ausgeführt und beispielsweise als frei schwingende Kolbenmembran ausgebildet sein, die in üblicher Weise erregt wird. Auf der Zeichnung ist eine Magnetspule b angedeutet, welche die Erregerströme führt. Der Spulenkörper ist in einem.schalenartigen Schalleiter c, welcher die Rückstrahlung der Membran a aufnimmt und zur Schallwand und somit durch die Öffnung d zum Schallraum leitet, vorgesehen.An example embodiment is omitted in the drawing all parts not required for understanding in Fig. i in a front view (from the sound room) and shown in Fig. a in a longitudinal section. The sound generator (Membrane a) can be designed in any shape and, for example, as freely oscillating Be designed piston diaphragm, which is excited in the usual way. On the drawing a magnetic coil b is indicated, which carries the excitation currents. The bobbin is in a shell-like sound conductor c, which is the reflection of the membrane a picks up and leads to the baffle and thus through the opening d to the sound room, intended.

In dem auf der Zeichnung dargestellten Ausführungsbeispiel ist die Wiedergabe einer Schallplatte auf elektrischem Wege angedeutet. Die nicht dargestellte Umformungs- und Verstärkungsvorrichtung kann in beliebiger Weise in einem Schrank untergebracht sein.In the embodiment shown in the drawing is Reproduction of a record indicated by electrical means. The one not shown Forming and reinforcing device can be in any way in a closet be housed.

Die Einrichtung kann aber auch zur Aufnahme von Rundfunkdarbietungen und zur Wiedergabe derselben mit einer hochfrequenten Empfangseinrichtung ausgestattet sein.The facility can also be used to record radio performances and equipped with a high-frequency receiving device for reproducing the same be.

Claims (1)

PATENTANSPRUCH: Schallerzeuger ohne Trichter mit doppelseitiger Ausnutzung der Membran, bei dem die rückwärtige Schallstrahlung durch Kanäle in die Hauptschallrichtung geleitet ist, nach Patent 5i5 935, dadurch gekennzeichnet, daß an Stelle mehrerer Kanäle eine einzige schalenartig die Rückseite der Membran umgebende Schallführung vorgesehen ist.PATENT CLAIM: Sound generator without funnel with double-sided utilization the membrane, in which the rear sound radiation through channels in the main direction of sound is directed, according to patent 5i5 935, characterized in that instead of several Channels a single shell-like sound guide surrounding the back of the membrane is provided.
DEL70773D 1927-12-15 Sound generator without funnel Expired DE539836C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL70773D DE539836C (en) 1927-12-15 Sound generator without funnel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL70773D DE539836C (en) 1927-12-15 Sound generator without funnel
DEL70476D DE515935C (en) 1927-12-15 1927-12-15 Sound generator without funnel with double-sided utilization of the membrane

Publications (1)

Publication Number Publication Date
DE539836C true DE539836C (en) 1931-12-02

Family

ID=25986270

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL70773D Expired DE539836C (en) 1927-12-15 Sound generator without funnel

Country Status (1)

Country Link
DE (1) DE539836C (en)

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