RS1332U - FULL SOUND ENVIRONMENT SYSTEM WITH FLOOR SPEAKERS - Google Patents

Abstract

A full-floor audio system with floor-standing speakers in digital cinema technology enables the generation of 3D sound effects, indicated by a tirilla, which is a server (1) with digital film content connected to a multi-channel digital processor (2) so that each of its output signals excites appropriate groups of amplifiers ( 3-1 through 3-7), the outputs of which are connected to the respective groups of sound sources (4-33), wherein the ceiling and floor speakers (18-33) form correspondent pairs along the vertical axis, thereby moving the virtual acoustic center vertically and generating 3D sound effects. The application contains 1 more dependent claim.

Description

The field of techniques to which the invention relates

The invention is from the field of electroacoustics and information technologies.

MKP: H04R5/02 (spatial III structural arrangement of loudspeakers)

Technical problem

This invention solves the problem of generating three-dimensional sound primarily in digital

bloscopes, then in multipurpose, pozorttnimisi. halls, using special sound systems

source of information.

Thanks to the special arrangement of speakers in the sub-ceiling and their correlation, it is achieved

very beautiful reproduction of sound effects related to sources in nature (sounds produced by

crickets, frogs, birds, then the sounds of sea or river waves, the murmur of streams, the falling of raindrops on

pavement And so on.).

To date, no existing film multi-channel audio system is capable of reproducing these effects

used the possibility of setting up speakers in the floor, which remained the sound source of the hall (ceiling and

walls), contribute to the full convincingness of multichannel sound.

State of the art

In modern digital film technology, there are several multichannel sound systems

reproductions of which the most important ones are listed here.

DolPVtt/m>iind7.1

This is the system that is currently the most used in digital media.

The disposition of sound sources required by the specified standard is as follows:

•Three sources behind the projection screen (blood, central and right)

• One sound set for generating extremely low frequenciesJ

• One sound string each on the left and right side walls

• Two sound arrays on the back wall of the hall (opposite the projection screen)

DolbvAlmos

This system is an extension of the previous one and includes two additional sound arrays in the ceiling (/s/f fopCBlHngIright top celllngnizovi).

Sunsound 10. 2

The above system was developed by Tom Johnson Holman (ex THX).

This concept, in addition to the left and right surround channels, introduces two additional sources (one for each

surrvundkanal) which enables sound information to be "moved" spatially

360°. So the 20.2 system uses 5 frontal 15 sound channels with two SvV channels.

22.2 channel Sunsound

This system was developed by NHK Science & Technfcal Research Laboratories.

It uses 24 sound sources positioned in 3 levels:

• The middle level will consist of 10 sources

• The higher level has 9 sources

• Lowest level Has 3 sources and 2 SW sections

Brief presentation of the summary of the invention

The development of digital audio technology, 3DTV and 3D video-projection systems opens up new ideas for the establishment of technological standards that introduce them to the field of fundamental audio-visual

perceptions.

The system of total sound environment (TSS) implies the arrangement of sound sources in a unified hall

in the shape of a spatial grid, on the basis of which it is possible to generate 3D sound effects.

In this system, speakers of specific constructions have a special role, which are installed under, for example, in digital cinemas (with DC video projectors), then in theaters, in special halls, night clubs and other commercial-entertainment environments.

Brief description of the draft images

The attached pictures (drawings) show details that illustrate the invention.

Figure 1 - shows the functional flow-diagram of the system

Figure 2 - shows the arrangement of speakers in the hall, based on which 3-Sound is obtained

Figure 3 - shows the layout of the floor speaker (close-up and top view)

Figure 4 - shows the detail of the installation of the floor speaker in the entrance hall

Detailed description of the invention

The basis of the Total Sound Surrounding System (TSS) in One digital cinema between

among other things, they consist of a digital server (1) and an audio processor (2) through which 11-channel sound is distributed

information in the system of amplifiers (3-1 to 3-7) of speakers (4-33) as shown in Fig. 1.

In this case, the sound sources form a simple lattice shown on the primary of a smaller film

halls in Fig. 2:

-behind the projection screen in the movie theater are 3 groups of speakers (4-6) for

reproduction of direct sound corresponding to the left, central middle channel reespectrve

- in the left, rear-side hall, 4 independent arrays of loudspeakers (8-17) are placed, which generate sound effects in the horizontal plane and correspond to the left, rear-side

from the surrounding channel perspective

- Two sets of speakers (18-25) are placed on the ceiling of the hall on special supports

they correspond to the left Platonic copper platonic canal

- Two sets of speakers (26-33) of special construction (v.si.3.) were placed at the entrance of the hall

and 4), which correspond to the left floor and right floor channels

-for the generation of acoustic performances behind the projection screen, the so-called woofer section (7) is placed, which corresponds to the subwoofer channel (in the literature it is denoted by "saM")

All of the above channels are controlled, processed and managed using special digital audio

processor (2) which generates various sound effects and reproduces 3D in the observed hall

sound.

Existing sound techniques in film or concert technology have not yet solved the problem of complete 3D sound reproduction, i.e., natural, realistic sound impressions, which are reflected in the complete correlation of optical and sound perception with the exact location of the sound source as it is in nature, or. in real life.

Previous systems during their development manipulated sound effects in terms of their own

"Porning" spatial angle, phase shift, delay of the sound level of the audio signal.

When Jereč vertically positions some sound information that is located at a certain height coordinate, i.e. above the heads of visitors in a hall, a good perception of the source is obtained.

using an audio source in the ceiling.

However, what happens if we have a film sequence in which, let's say, two motorboats are racing, or leaving, while people are watching them from the shore, Or, if they stopped at a certain moment, and the motors are idling? In that case, they are disturbed by the sound of the engine, the noise of the water, or the waves that are supposed to be felt the way Jeto creates them? of this sound sequence, because in nature the sound of water waves is located below", or at least the floor of the hall where the seats and visitors are. Let's assemble two sets of speakers (26-33) in the floor and that is in the left middle passage for the poser of the observed hall. "passage", but it can be immovable lasts as long as the parent or film producer determines. This is possible only if the sound source is positioned exactly on the coordinates in the Cartesian system, which is natural, although it receives information from a special channel. The system of total sound environment (TSS) is based on the specific arrangement of floor (26-33) and floor (18-25) speakers, which are connected to the corresponding power amplifiers (3-5 and 3-6), and to the outputs of the digital film audio processor (2). reflected in such an arrangement of speakers on the ceiling and in the bottom of the pair in a common vertical. If you connect the two stereo amplifiers (3-5 and 3-6) so that all the floor speakers (26-29) are on the left side of the hall, connected to one channel output, and the Platonic speakers (18-21) are connected to the other channel of the same amplifier (3-5), although we can do the same on the right side of the hall, by connecting the middle Platonic speakers (22-25 f 30-33) to the two corresponding channels of the other amplifiers (3-6) then we get the possibility of generating additional effects. They are reflected in the vertical displacement of the virtual acoustic center, the sound intensity level in pairs of speakers and the signal delay in the corresponding FM channels, which correspond to Platonic floor speakers. In this way, we achieve that the virtual acoustic center of the desired sound effect can be moved according to the appropriate vertical coordinate in relation to the audience in the hall. In addition, of course, independent reproduction of special effects is possible from the floor*platonic speakers when it is not about directed vertical effects.

If the audio processor optionally supports a greater number of discrete digital audio channels than those listed11,

in that case, it is technically feasible to give each sound pair (platonic base) which then

connected to the respective 2-channel amplifiers, added special (dedicated) channels, etc. each speaker of the pair can be excited by its own effect. These effects could be recorded on additional channels

within the framework of a complete film soundtrack, which opens up the possibility of generating an even larger number

additional high-quality sound effects in a 3D environment.

We emphasize that all the mentioned effects are processed and generated with the help of multi-channel digital

audio processors (2) and design in a specially equipped post-production film studio.

In addition to the video projection hall (digital cinema, etc.), the mentioned system can also be used in

theatrical and multi-purpose halls for special program events (event halls) Ud.

For a more precise explanation of the technical solution, in the following description we will focus on the digital one

btoskop { Digital Clnema), or. to the hall for showing video films, using DC video

projectors and video servers with stored video content distributed on said

DCP.

So, an 11-channel sound infrastructure consisting of characters, music and effects in the final voiced

of the movie soundtrack to the DCP, from the server's digital audio outputs (1), is fed to the inputs

digital processor (2), and from its outputs, 11.1 audio channels are fed to the corresponding inputs

amplifiers (3-1 to 3-7) as shown in the diagram on si. 1.

The system designed in this way enables various combinations of sound effects, both static and I

dynamic (with movement) in the entire spatial angle (0-360°).

We will highlight the main features of the "Complete Sound System" on a few of the following examples

environment (TSS)":

- With the help of speakers in the ceiling, convincing simulations of airplanes or helicopters are achieved

above the auditorium, or the generation of sounds in nature (moose, storm, thunder, etc.).

- Analogous effects are achieved in the floor of the hall by means of sound sequences (river III marine

tabsi, raindrops falling on the ground, earthquakes, etc.)

-Using the left, rear and right surround channels, or. appropriate sound sources in

the precise location of the source of the sound is possible on the walls of the hall; for example, it is in the battlefield scenes

it is possible to hear gunshots at the same moment, but in different locations (left, back or right),

grenade explosions or machine gun bursts

- The floor speakers reproduce and position the very convincing effect produced by the wheels

wagons on rails, for example in a film sequence with actors in a compartment

The floor speaker shown in Figures 3a and 3b is specially constructed.

The sound driver (34) is installed in a sealed cylindrical housing (35) and placed with a diaphragm

facing upwards, towards the acoustic radiator (36), so that the acoustic energy from

The floor radiates omnidirectionally.

Said sound driver (34) is fixed on a protective circular plate (37), which with the help of 3 or more

the support (38) also carries the acoustic radiator (36). A transparent protective net is placed over them

(39) strong enough to be stepped on.

The svetJosnl LED indicator (40) is installed in the center of the network, which serves as a visual trademark of those

halls that have floor speakers and in which 3D sound reproduction is possible in TSS

format.

The radiator (36) has a smaller circular opening at the bottom to allow for accuracy drainage in the case

possible entry into the housing during floor cleaning.

Figure 4 shows a detail of the installation of the floor speaker (41) in the floor in the spectator passage

Method of industrial and other industrial inventions

Based on the above, as well as from the examples presented, it can be seen that this is a new, original technological system of sound reproduction, in fact, the appearance of a new one as well.

technological format (TSS) in the domain of digital cinemas and similar multimedia spaces.

This system requires the use of new hardware, such as digital processors

channels from current loudspeakers of a special construction that are built into the floor.

In addition, the presented system opens up a new field of film production in high-definition technology (4Kiliviše), which requires a significantly more sophisticated technical approach in the very conception and implementation.

feature films.

Claims (2)

1. The system of a complete sound environment with floor speakers in the technology of digital cinemas enables the generation of 3D sound effects, indicated by the fact that there is a server (1) with digital film content connected to a multi-channel digital processor (2) so that each of its output signals excites the corresponding groups of amplifiers (3-1 to 3-7) whose outputs are connected to the corresponding groups of sound sources (4-33), whereby the platonic and floor speakers (18-33) form Corresponding pairs along the vertical axis can be achieved by moving the virtual acoustic center vertically and generating 3D sound effects. 2. Floor speaker according to patent claim 1, indicated by the fact that the sound driver (34) with a membrane is installed in a sealed cylindrical housing (35) facing a half-circuit acoustic radiator (36), fixed to the supporting plate (37), with supports (38), a transparent protective net (39) and a luminous LED indicator (40), which achieves the reproduction of sound effects from below with omnidirectional acoustic radiation