FR2779313A1 - Cinema seat secondary sound system - Google Patents

Abstract

The cinema seat (1) has a rear channel (2) carrying cabling (5) from an amplifier (6) at ground level to a loudspeaker (3). The loudspeaker is placed to send sounds upwards through a hole (4) in the seat rear section.

Description

The present invention relates to a device allowing

  to sound armchairs during a cinematographic projection

  graphic, creating a sound complement coming to be associated with

its main.

  The sound system offered in cinemas has always been broadcast by speakers located on the

  the walls above the spectator, seated on a chair

  threshold, offering it the necessary comfort during a projection

  cinematic, which leaves a distant sound field

  of the spectator, therefore not including it in this zone.

  The device according to the invention will make it possible to make the sound show more present. It indeed comprises according to

  a first characteristic, an armchair, presenting a

  placement in which a speaker is integrated, positioned so as to diffuse the sound upwards, producing a low intensity sound source, of mono, stereo origin,

  surround, etc., producing delayed, progressive sound, etc.

  The system will allow the passage of the sound sent from the front wall speakers to the rear wall speakers (or vice versa) without any sound loss being perceptible, even when moving sideways, and increase the presence of sound on the viewer. Since at the very moment when the main sound passes over the spectator, the loudspeakers

  introduced into the armchairs will project their sources so-

  nores to allow to enlarge the sound field so as to introduce the spectator inside of it. This will be achieved with this system by producing a low sound source from the chair, which we will associate

  to the main sound, which will create an attractive phenomenon

  giving the impression that the sound diffusion will be located at the height of the spectator and no longer above him. According to the particular embodiments: - several orifices may be provided depending on the number of

  speakers that you want to integrate into the chair.

  - several orifices can be provided for a single top -

speaker.

  The accompanying drawings illustrate the invention.

  Figure 1 shows in section, the device of the invention

tion.

  Figure 2 shows in section a variant of this arrangement.

sitive.

  Figure 3 shows in section a variant of this arrangement.

  sitive. With reference to these drawings, the device comprises an armchair (1), the back of which is provided with a conduit (2) or a speaker (3) is introduced placed in front of an orifice

(4) leaving the sound behind.

  The loudspeaker (3) will be connected by a cable (5) to an amplifier (6) which will transmit the sound information, which may be of mono, stereo, surround, etc ... origin, giving a delayed sound , progressive, etc ... compared to the main sound to increase the intensity and quality of sound effects. In the embodiment according to FIG. 2, the -3 armchair (1) is provided with 2 loudspeakers (3) placed in the conduit (2) situated at the end of 2 orifices (4) offering a more sonorous zone "tense which will increase the

sound field.

  In the embodiment according to FIG. 3, the armchair (1) is provided with a loudspeaker (3) directed against the back of the armchair (1) towards the back of the spectator by sending its sound source which will therefore travel , on the one hand the back of the spectator and on the other hand the interior of the duct (2), up to the orifices (4) for the diffusion of sound outside

from the chair.

  The device according to the invention is particularly intended for the sound reinforcement of armchairs to create a sound system complementary to the main sound sources during a

cinematographic projection.

-4-

Claims (5)

  1) Device to add sound to a chair allowing   create a sound source complementary to the main sources   blades during a cinematographic projection characterized in that it comprises an armchair (1) having a conduit (2) into which a speaker (3) is introduced, connected by a cable (5) to an amplifier (6) to produce a low intensity sound source (mono, stereo,   surround, etc., give a delayed, progressive sound, etc.   relative to the main sound depending on the desired effect) broadcast by an orifice (4).   2) Device according to claim 1 characterized in that the conduit (2) constitutes a part of the chair (1) an area comprising sound elements (loudspeaker) (3) allowing to send low intensity sound signals   to join the main sound.   3) Device according to claim 1 or claim-   tion 2 characterized by a loudspeaker (3) used to send   a sound source at the height of the spectator so that he   this is inside the sound field.   4) Device according to any one of claims   previous characterized in that the conduit (2) is provided with   several speakers (3) and orifices (4).   ) Device according to any one of the claims   previous characterized in that the sound device is composed of a single speaker (3) for several orifices (4). -5-   6) Device according to any one of claims   previous in that a loudspeaker (3) is directed towards the back of the spectator, to be able on the one hand to diffuse the sound   along it and on the other hand send by the same built-in   speaker (3) the sound in the conduit (2) to be able to diffuse   use the different holes (4) arranged on the backrest.