DE1014167B - Wing chair with built-in speakers - Google Patents

Description

GERMAN

It is known to have speakers so close to the ears of the on either side of a chair or armchair seated person to arrange that other people in the same room from the sound not be disturbed. The loudspeakers are in terms of their position to the ears, and in terms of their distance adjustable from the ears.

It is also known to use speakers in the. both side. Walls of a wing chair (back chair) to enable stereophonic playback in cinema theaters.

The invention improves wing chairs with built-in speakers. According to the invention, the Loudspeakers arranged so that the sound hits the ears at an angle from the front, and the inside of the The walls of the armchair that are hit by the sound ■ are highly sound-absorbing. Material, in particular with foam rubber with a porous surface, lined and the outside is lined with a sound-absorbing material, e.g. B. cardboard covered.

The invention achieves that despite the relatively large, given by the shape of the .Sessel Distance of the loudspeakers from the ears only a little sound from the loudspeakers to the outside and little disturbing sound from the room penetrates the ears because reflections of the sound in the The part of the chair that surrounds the head is avoided and the sound does not come through the wall of the armchair can penetrate. So only that part of the disturbing sound can reach the listener that hits him directly. The low noise impact from the outside in turn has the consequence that the loudspeaker sound already covers the disturbing sound, even at low strength, without doing so to be loud, to allow significant noise to penetrate into the outside space.

For a more detailed explanation of the invention, a preferred embodiment is to be made with reference to the drawings to be discribed. These show in

Fig. 1 is the perspective view and in

Fig. 2 is a plan view of an armchair 1 with a U-shaped cross-section of the wall, the inside of which is coated with a highly sound-absorbing material, e.g. B. foam rubber with a porous surface is lined and the backrest 2 is extended so that the upper edge of the chair is above the head of a listener 3. The side walls 4 of the armchair are pulled far forward and enclose the head and shoulders of the listener so far that there is still enough space between the side walls at the front of the armchair for the listener to sit comfortably in the armchair from the front can. On the front edges of the side cheeks two speakers 5 are arranged, their wing chairs
with built-in speakers

Applicant:

Telefunken GmbH,
Berlin NW 87, Sickingenstr. 71

Dr. Friedrich-Karl Schröder, Hanover,

and Karl Nagel, Düsseldorf,
have been named as inventors

The radiation pattern is oriented so that almost all the sound waves emitted are on the opposite side Strike the armchair wall and be absorbed by it. To adjust the listener's sound perception to the circumstances In a concert hall, the loudspeakers are placed slightly above the listener's ears and slightly downward, inclined. The line connecting the loudspeaker centers as well as the intersection of the The main radiation axis of the loudspeaker is expediently in front of the ear axis of the seated person, based on the line of sight, because a loudspeaker placed in the back of the seated person is usually uncomfortable is felt. Such an arrangement of the speakers has, for example, because of the spatial Distance between the loudspeakers has the advantage that, with the appropriate signal feed, a stereophonic Effect can be achieved. For this purpose it is only necessary to equip each speaker with one To connect stereo playback device.

The structure of the wing chair described ensures that almost all sound waves that are emitted by the two loudspeakers, are absorbed by the armchair walls, so that outside of the armchair only a small part of these sound waves can be heard. Also is the proportion of Sound waves that could disturb the listener from the outside through the relatively small opening of the armchair and reduced by the sound-absorbing covering so that the listener is undisturbed by the actual Can hear performance. It may be necessary to make the wall soundproof several layers of cardboard (or other sound-absorbing material) with air spaces between them build up. Therefore, as is the case in gramophone

709 658/261

Retail stores often require any number of such armchairs next to each other or with their backs are set up in relation to one another and provided with various musical performances without any mutual Malfunction occurs. .

Such armchairs can, for. B. also in hotel halls, waiting rooms, sanatoriums or in private rooms for listening to radio performances or records or the like. Find where silence is desired outside the monitoring facility.

The loudspeakers weigh and the minor. It is advantageous to have a baffle effect in the amplifier Increase the low frequencies to be provided.

Claims (2)

Patent claims: 1. Wing chair with speakers built into the side walls opposite the ears the person sitting in your armchair, characterized in that the loudspeakers are arranged in this way are that the sound hits the ears obliquely from the front and that the inside of the Sound-struck walls of the armchair with a strong sound-absorbing material, in particular is lined with foam rubber with a porous surface and that the outside with a sound-absorbing material, for. B. Cardboard that is covered. 2. wing chair according to claim 1 ·, characterized in that the speakers are arranged are that the sound besides obliquely from the front also something from. hits the top of the ears. Considered publications:
German patent application T 930 Villa / 21a ² ;
U.S. Patent Nos. 2,009,138, 2,161,995;
Filmtechnikum, April 1955, pp. 99/100. 1 sheet of drawings © 709 658/261 8.57