RU16811U1 - ACOUSTIC SYSTEM - Google Patents

Abstract

An acoustic system mounted in a room and including two loudspeakers located in front of the listener and two loudspeakers located behind the listener, characterized in that it additionally contains two more pairs of loudspeakers, which, together with the above loudspeakers, are placed in a volumetric room at the corners of the cube inserted into it and are involved in the asynchronous inclusion mode, while the listener is in the center of this room, the speakers are oriented to the listener, and for distributed I used the sound scheme of its distribution channel contains switches that distribute the sound of all the speakers speaker system.

Description

Acoustic system

The utility model relates to sound reproducing equipment located in concert halls, cinemas, discos, home cinemas, etc.

Known systems for obtaining the effect of surround sound using several spaced apart in the volume of the room sound sources (loudspeakers, speakers) see, book. Kozyurenko Yu.I. High quality sound reproduction. M., Radio and Communications, 1993, p. 113 - 114, fig. 36.

The disadvantages of such systems are that the maximum possible surround effect is not achieved.

The closest in technical essence to the claimed one is an acoustic system in which two loudspeakers are located in front of the listener (front), and the other two are behind the listener (rear), see Large Encyclopedic Dictionary. M., BDT, 1998, p. 504.

The disadvantages of such a system are the impossibility of obtaining perfect surround sound and creating a specific effect of the illusory, fantastic movement of sound in the sound space of the speaker system.

The objective of the claimed utility model is the creation of an acoustic system for obtaining perfect (ideal) surround sound, as well as the creation of a specific effect on the listener of the illusory, fantastic movement of sound in the sound space created by the claimed acoustic system.

This problem is solved due to the fact that the acoustic system mounted in the room, including two loudspeakers located in front of the listeners and two loudspeakers located behind the listener, additionally contains two more pairs of loudspeakers, which together with the above loudspeakers are placed in the surround

7 IPC HO4R5 / 02

the room at the corners of the cube that fits into it, and are used in the asynchronous inclusion mode, while the listener is in the center of this room, the speakers are oriented to the listener, and a sound distribution scheme is used to distribute sound, containing channel switches distributing sound across all speakers of the speaker system .

The utility model is illustrated by drawings, where in FIG. 1 shows loudspeakers 1, 2, 3, 4, 5, 6, 7, 8 spaced at the corners of the proposed cube.

In FIG. 2 shows a sound distribution diagram for all loudspeakers, where 1 is a digital multi-channel sound carrier; 2a - 2z - channel switches; For - For - low frequency amplifiers; 4a - 4c - loudspeakers.

Sound is delivered to the speakers as follows.

It is advisable to use a multi-channel digital player DMD as a sound carrier, which will allow you to get 8 channels of sound recorded and played back. Each channel is a record of one instrument or soloist or several performers at once. There are a lot of options for recording sound on channels, everything will depend on the creative capabilities of the recording engineer.

The signal of channel 1a is fed to the programmable switch 2a of the channel. The switch of this channel sends the digital signal of the channel alternately or in a different order to the low-frequency amplifier, according to the specified program. The channel switch program itself can be created for an individual work, or general programs can be created to obtain the specific effect of an unreal, fantastic sound movement.

Next, the amplifier amplifies the signal, and feeds it to the speakers 4a - 4z.

This design is used for small to medium sized rooms. For large halls, you need to use channel switches with a large number of subchannel speakers.

Sound movement

The movement of sound is achieved as follows. Loudspeaker 1 emits a signal at full power. The listener perceives sound from the front to the left. After a certain time, the loudspeaker 2 turns on, which creates a mono effect, in which the listener perceives the sound directly in front of him. Then the loudspeaker 1 is turned off, the listener hears the sound in front of the right. Thus, the movement of sound from the loudspeaker 1 to the loudspeaker 2, from left to right, is obtained.

We also get movement from loudspeaker 2 to loudspeaker 3, and further in a circle to loudspeaker 1. The sound moved in a circle, thereby creating a horizontal plane of sound perception for the listener. Having placed the loudspeakers 1, 2, 3, 4, 5, 6, 7, 8 according to the diagram, figure 1, we get 4 vertical planes of sound perception at the listener, also formed due to the movement of sound between the loudspeakers 1) 2,6,7,3; 2) 3, 7, 8, 4; 3) 1, 5, 8, 4; 4) 1, 2, 6, 5, vertically and 1) 1, 2, 3, 4 and 2) 5, 6, 7, horizontally.

Thus, the listener is located in the center of the cube, formed by 6 planes of his perception of sound, by means of the movement of sound between loudspeakers 1, 2, 3, 4, 5, 6, 7, 8 and all loudspeakers are directed to the listener.

In FIG. 3. A diagram of the movement of sound between four loudspeakers is shown, which ensures that the listener receives one of the six planes of sound perception. The arrows indicate the movement of sound from the speaker 1 in a circle clockwise or counterclockwise.

As a result of using the above-described acoustic system, a specific effect of the illusory (fantastic) perception of sound movement is achieved by the listener, which can be compared with the video effect, when the observer, perceiving the movement of a passing train, receives a sensation of the illusory movement of his stationary train.

The author of Sh & GN.A. Smolyakov

10.10.2000

Claims (1)

An acoustic system mounted in a room and including two loudspeakers located in front of the listener and two loudspeakers located behind the listener, characterized in that it additionally contains two more pairs of loudspeakers, which, together with the above loudspeakers, are placed in a volumetric room at the corners of the cube inserted into it and are involved in asynchronous inclusion mode, while the listener is in the center of this room, the speakers are oriented to the listener, and for distributed I used the sound scheme of its distribution channel contains switches that distribute the sound of all the speakers speaker system.