DE102008057315B4 - Speaker layout - Google Patents

Abstract

A loudspeaker arrangement (1) with a plurality of loudspeakers (2, 3, 4) optimized for different frequencies, wherein a high-frequency loudspeaker (3) for sound guidance has a horn (5) which adjoins the sound exit opening (32) and which extends curved acoustic baffle (51) on its inner side (52), wherein there is at least one lower frequencies associated middle-low-tone loudspeaker (4), characterized in that the horn (5) by one in its the curved sound Side (1) facing away from the voluminous and solid body (6), the membrane (41) oscillating in a plane of vibration (42) of the at least one middle low-tone loudspeaker (4) immediately behind the voluminous and solid body (6) of the horn (5) is arranged, wherein in the voluminous and solid body (6) of the horn (5) to the vibration plane (42) of the membrane (41) vertically arranged channels (61) are formed, through which sound waves (43) of the at least one middle-low-tone loudspeaker (4) can penetrate and through openings of the channels (61) in the curved ...

Description

The invention relates to a loudspeaker arrangement having a plurality of loudspeakers optimized for different frequencies, a high-frequency loudspeaker associated with high frequencies for sound guiding having a sound exit surface adjoining a flaring horn which offers a sound guide surface on its inner side and at least one mean assigned to lower frequencies Low tone speaker is present.

A compact arrangement of individual loudspeakers optimized for different frequencies in a system for reproducing the entire sound spectrum is often hindered by the fact that normally tweeters are arranged with a horn at their sound exit opening, which is provided for conducting the sound at high frequencies.

From the JP 11098591 A is shown using a different approach using arrangement with axially arranged tweeter and woofer. Wherein a conventional horn is mounted on the tweeter and the periphery of the tweeter horn, in addition to its scarfing surface, is extended outwardly in a planar plane by molding, this plane passing through elongated slot openings adjacent to that through the surface of the tweeter Partially formed horns connect, broken through. The sound waves of the woofer should then pass through these elongated slots next to the horn.

The object of the invention is to further develop a speaker assembly and in particular to allow more compact designs with multiple sound sources.

This object is achieved by a loudspeaker arrangement according to the features of claim 1.

According to the invention, it is provided that the horn is configured by a voluminous body in its side facing away from the sound guide surface, wherein the oscillating membrane of the at least one middle-low-tone loudspeaker is arranged directly behind the voluminous and massive body of the horn, wherein the voluminous body of the horn to the vibration plane of the membrane are arranged perpendicular channels through which the sound waves of the at least one middle-low-tone speaker can penetrate.

As a result, optimized sound radiation and the smallest possible compact design is possible in a particularly effective manner. The radiation behavior is now more uniform over the frequency than in conventional arrangements with structurally conditionally spaced by the previously impenetrable horn sound sources.

For the purposes of the invention, the sound-conducting surface of the horn is curved.

It is advantageous if the at least one medium-low-tone loudspeaker is arranged directly adjacent to the sound exit surface of the high-frequency loudspeaker, ie at a small distance.

In the event that there are several middle-low-tone speakers, it is advantageously provided that their membrane centers are spaced less than lambda (λ) / 2 of the highest frequencies to be radiated.

Preferably, the material of the body is hard-sounding.

According to a particularly advantageous development of the invention, it is provided that the channels form a bandpass in the body, wherein the number of channels and their respective cross-sectional area and length are chosen so that the resonance frequency of the bandpass is not substantially below the crossover frequency between high frequency Loudspeaker and mid-low sound speaker is located.

The invention will be further explained with reference to the drawings. In detail, the schematic representation in:

1 a schematic representation of a loudspeaker arrangement according to the invention with two middle-low-tone speakers and a high-frequency speaker with associated horn,

2 an enlarged view of a portion of the arrangement 1 .

3 a schematic sectional view of the horn to illustrate the channels in the voluminous body of the same, and

4 a schematic view of the horn with the channels from above.

The same reference numerals in the figures designate the same or equivalent elements.

In 1 is an exemplary speaker arrangement 1 with optimized for different frequencies speakers 2 shown.

High-frequency loudspeakers associated with high frequencies 3 is to the sound guide a at the sound outlet opening 32 subsequent widening horn 5 connected, which is a sound-conducting surface 51 on its inside 52 forms.

The horn acts for high frequencies in a conventional manner, the sound waves conductive. The sound guide surface 51 of the horn 5 is progressively wide curved. The horn itself is massive and voluminous designed and the material used by the body 6 is reverberant.

Immediately next to the sound exit area 32 the tweeter speaker 3 are two lower frequencies associated mid-low-tone speakers 4 arranged. These are with their vibrating membrane 41 immediately behind the voluminous body 6 of the horn 5 that the sound-conducting surface 51 forms on the outside 53 arranged. For the passage of deep sound waves through the mid-low-tone speakers 4 are generated in the voluminous body 6 of the horn 5 to the vibration level 42 the membrane 41 essentially vertically arranged channels 61 formed, through which the sound waves 43 of the mid-low-tone loudspeaker.

The membrane centers 44 the mid-low-tone speaker 4 are in the example shown less than lambda (λ) / 2 spaced apart the highest frequencies to be radiated.

2 shows an enlarged view of a part of 1 ,

In 3 and 4 is a schematic sectional view and a top view of the horn 5 to clarify the arrangement of the channels 61 in the voluminous body 6 shown.

The channels 61 in the massive and voluminous body 6 form a band pass for the sound waves, the number of channels 61 and their respective cross-sectional area and length are chosen so that the resonant frequency of the bandpass is not significantly below the crossover frequency between high-frequency speakers 3 and mid-low-tone speakers 4 lies.

LIST OF REFERENCE NUMBERS

1

Speaker layout

2

speaker

3

Tweeter

31

Sound waves of the tweeter speaker

32

Sound outlet

4

Medium-low Sound Speaker

41

vibrating membrane

42

Vibration level of the membrane

43

Sound waves of the mid-low-tone loudspeaker

44

Membrane Center

5

horn

51

Sound baffle

52

inside

53

outside

6

voluminous body

61

channels

Claims (5)

Speaker arrangement ( 1 ) with several loudspeakers optimized for different frequencies ( 2 ; 3 . 4 ), a high frequency associated high frequency speaker ( 3 ) for conducting a sound whose sound outlet ( 32 ) subsequent widening horn ( 5 ), which has a curved sound guide surface ( 51 ) on its inside ( 52 ), wherein at least a lower frequencies associated middle-low-tone speakers ( 4 ), characterized in that the horn ( 5 ) in its curved sound guide surface ( 51 ) side facing voluminous and massive body ( 6 ) is configured, wherein in a vibration plane ( 42 ) vibrating membrane ( 41 ) of the at least one mid-low-tone loudspeaker ( 4 ) immediately behind the voluminous and massive body ( 6 ) of the horn ( 5 ), wherein in the voluminous and massive body ( 6 ) of the horn ( 5 ) to the vibration level ( 42 ) of the membrane ( 41 ) vertically arranged channels ( 61 ) are formed, through which sound waves ( 43 ) of the at least one mid-low-tone loudspeaker ( 4 ) and through openings in the channels ( 61 ) in the curved sound guide surface ( 51 ) of the horn ( 5 ) can escape. A loudspeaker arrangement according to claim 1, characterized in that the at least one middle-low-pitch loudspeaker ( 4 ) directly next to the sound outlet ( 32 ) of the high-frequency loudspeaker ( 3 ) is arranged. Loudspeaker arrangement according to Claim 1 or 2, characterized in that a plurality of medium-low-tone loudspeakers ( 4 ) whose membrane centers ( 44 ) are spaced less than lambda (λ) / 2 of the highest frequencies to be radiated. Loudspeaker arrangement according to one of claims 1 to 3, characterized in that the voluminous and massive body ( 6 ) consists of reverberant material. Loudspeaker arrangement according to one of Claims 1 to 4, characterized in that the channels ( 61 ) in the body ( 6 ) form a bandpass.

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