DE2727075A1

DE2727075A1 - Double phase acoustic corrector - has small transverse deflector preventing flow back of sound so that it can be added

Info

Publication number: DE2727075A1
Application number: DE19772727075
Authority: DE
Inventors: Eberhard Vogt; Michael Wetzlaugk
Original assignee: SINUM KLANGSTRAHLER GmbH
Current assignee: SINUM KLANGSTRAHLER GmbH
Priority date: 1977-06-13
Filing date: 1977-06-13
Publication date: 1978-12-21

Abstract

The corrector lies transversally at the beginning of the phase channel and diverts the sound of several bass loudspeakers into the channel. The production tolerances of the loudspeakers cause small differences in transient processes between the loudspeakers so that the sound radiation from different loudspeakers is staggered in time. The sound node is so shifted, that one loudspeaker oscillates in the phase channel, while others operate like in a closed cabinet. Deflection of the sound into the channel prevents a flow-back. The sound from several loudspeakers can be added, without interfering with each other. It is even possible to disconnect one loudspeaker without upsetting the operation of the rest.

Description

Beschreibungdescription

SINUM KLANGSTRAHLER GMBH looo Berlin 49, Krusauer Straße 123 "Doppelphasenkorrektor" Anwendungsgebiet: Unterhaltungselektronik, Lautsprecherboxen Fundstelle(Stand der Technik): Lautsprecher und Lautsprechergehäuse für HiFi von Hans Herbert Klinger,6.Auflage Franzis - Verlag RPB 105 Die Grundidee: die Kombination von meheren Schallkomponenten, zwei BaBlautsprecher(Schallquellen) mit dazugehörigem Phasenkanal, zur Erzeugung einer homogenen Schallabstrahlung bei einer definitiv so gewahlten Gehäusekonzeption, daß eine interne Wechoelwirkung der BaBlautsprecher aufeinander vermieden und somit die parasitäre Beeinflussung auf ein Minimum reduziert wird.SINUM KLANGSTRAHLER GMBH looo Berlin 49, Krusauer Strasse 123 "double phase corrector" Area of application: entertainment electronics, loudspeaker boxes Find location (status of Technology): Loudspeakers and loudspeaker housings for HiFi by Hans Herbert Klinger, 6th edition Franzis - Verlag RPB 105 The basic idea: the combination of several sound components, two BaB loudspeakers (sound sources) with associated phase channel, for generation a homogeneous sound radiation with a definitely chosen housing concept, that an internal mutual echo effect of the bass loudspeakers on each other is avoided and thus the parasitic influence is reduced to a minimum.

Es ergibt sich eine getrennte Regelbarkeit beider 8aBlautsprecher, was bei der Anordnung an einem gemeinsamen Stauraum nicht möglich ist.There is a separate controllability of both 8a loudspeakers, which is not possible with the arrangement in a common storage space.

Durch dieses Verfahren wird eine Erhöhung des Schalldruckes und des Wirkungsgrades der BaBlautsprecher, eine Zentralisierung der Schallemission (durch die stärkere Bündelung) und eine Trennung der Banlautsprecher, ohne eine gegenseitige akustische Beeinflußbarkeit oder Abhängigkeit, erzielt.This procedure increases the sound pressure and the Efficiency of the BaB loudspeakers, a centralization of the sound emission (through the stronger bundling) and a separation of the ban speakers without mutual acoustic influenceability or dependence achieved.

Das Prinzip: durch den Doppelphasenkorrektor (4.) wird der Schallknoten in den Phasenkanal verlegt und gleichzeitig eine Schall-ausbreitungsrichtung parallel zum Phasenkanal erzeugt. Der Schallknoten ist der Ort, an dem sich der rückwärtig abgestrahlte Schall der Baßlautsprecher das erste Mal gemeinsam verdichtet und addiert. (5.) zeigt eine herkömmliche Lösung(siehe Fundstelle) ohne Doppelphasenkorrektor, bei der sich, bedingt durch Fertigungstoleranzen der Balllautsprecher, der Schallknoten ungünstigerweise verschiebt und dadurch die eine Kammer als Phasenumkehrbox und die andere Kammer als geschlossene Box wirkt.The principle: the double phase corrector (4.) becomes the sound node laid in the phase channel and at the same time a direction of sound propagation parallel generated to the phase channel. The sound node is the place where the back is The sound emitted by the bass speakers is compressed and added together for the first time. (5.) shows a conventional solution (see reference) without a double phase corrector, in which, due to the manufacturing tolerances of the ball speakers, the sound node unfavorably shifts and thereby one chamber as a phase reversal box and the other chamber acts as a closed box.

Die Kanalführung (6.) bewirkt eine Schallbeschleunigung, sodaß die Schallkomponenten Balllautsprecher und Phasenkanal als homogen strahlende Fläche wirken, weil der Steg (1.) vernachlässigbar klein ist.The channel guide (6.) causes a sound acceleration so that the Sound components ball loudspeaker and phase channel as a homogeneously radiating surface act because the web (1.) is negligibly small.

Claims

Claim "Doppelphasenkorrektor" The double phase corrector is an acoustic flow profile, characterized in that it is transverse at the beginning of the phase channel and the sound of several loudspeakers (sound sources) in the Phase channel diverts.

Manufacturing tolerances of the bass speakers produce a slight different transient response from loudspeaker to loudspeaker.

As a result, the bass loudspeakers radiate with a time delay to each other away.

(5.) shows that with the new arrangement there are several bass loudspeakers a phase channel no technical advantage arises. The sonic node is so shifted that the sound of a loudspeaker can swing into the phase channel, others Ba speakers act as if they were in closed housings.

(4.) is the solution. By redirecting the sound into the phase channel the possibility of reverse flow is prevented. The sound of multiple bass speakers can add up without influencing one another.

You can even switch off a bass speaker without affecting the way it works is disturbed.

The same solution in a different version with four SaB loudspeakers analogous to (1.) and (3.) illustrate the representations (7.), (3.) and (9.).