JPS5845232B2 - Sound systems in theaters, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sound system used in theaters and the like, and is designed to provide an effective sense of presence to audiences in theaters and movie theaters.

Recently, listening to music has become sophisticated, and it has become common to listen to music on a stereo.

And even in theaters and movie theaters, sound is increasingly being reproduced three-dimensionally.

In theaters and movie theaters, it is common to not only use music, but also to generate various sound effects to match the scene.

Therefore, it would be inconvenient for an audio device to be suitable only for reproducing music, and it is desired to faithfully reproduce various sound effects.

For this reason, in today's theaters and movie theaters, a large number of speakers are installed surrounding the seats where the audience sits, enveloping the audience with a large sound output, and creating a sense of realism. There is.

However, there is a limit to the sense of realism that can be reproduced only by the sound output from the speakers.

That is, a true sense of presence can only be obtained when the parts outside the ear are vibrated by sound pressure.

For this reason, in the past, the sound output was increased as much as possible,
An attempt was also made to make the audience feel the sound pressure directly through their bodies.

However, when this is done, the loud sound acts strongly on the eardrums, so that some audience members may find it unpleasant.

The present invention has been made in view of this point, and is designed to directly transmit vibrations of appropriate intensity to the bodies of the audience, regardless of the acoustic output of the speakers.

An embodiment of the present invention will be described with reference to the drawings.

First, Figure 1 is a plan view of the first floor of the theater where movies can be projected.

In this diagram, 1 is the stage, 2 is the screen installed at the back of stage 1, and 3 is the seats for the audience.

A large number of chairs 3 are arranged in horizontal rows, and the chairs 3 are further arranged in a plurality of rows and columns.

Speakers 6 are installed on both sides of the stage 1, on the wall 4 facing the chairs, and on the back wall 5 of the chairs 3 in the last row, so as to emit sound toward the audience seated in the chairs 3. It has become.

As shown in FIG. 2, in the chair 3, an output shaft 8a of a vibration unit 8 is fixed to a frame 7 in a backrest 3a.

This vibration unit 8 movably supports a coil in a magnetic circuit of a yoke with a magnet arranged in the center, and by passing an audio current from an amplifier through this coil, the action of this coil and magnetic circuit causes It has a structure that vibrates the output shaft that is integrated with the coil, and is based on the same principle as the dynamics beaker (there is no paper cone).

By attaching the vibration unit 8 to the frame 7 in this way, if an audio current is applied to the vibration unit 8, the frame 7
vibrates, and this vibration is transmitted to the audience seated on chair 3.

However, the vibration unit 8 may be one in which the case is vibrated without providing an output shaft like this.

Moreover, the attachment location may also be a load supporting member other than the frame 7 of the chair 3.

The point is that when the audio current is passed through the vibration unit 8, the audience seated on the chairs 3 should be able to feel the vibrations in their bodies.

FIG. 3 shows a connection circuit between a plurality of speakers 6 and the vibration unit 8.

To explain this, numeral 9 is an amplifier which is a sound source, and is used to amplify the reproduced sound from a record disc, a recording stripe of a movie film, etc., and obtain the required output.

A plurality of speakers 6 are connected to the output side of the amplifier 9 via an impedance matching transformer 10.

A low-pass filter 11 is connected to the output side of the amplifier 9, and a large number of vibration units 8 are connected to the output side of the low-pass filter 11 via a matching transformer 12, each via a signal input delay device 13. .

The signal input delay device 13 includes a coil, a magnet positioned within the magnetic field of the coil, a spring that transmits the rotational force generated in the magnet, a magnet attached to the other end of the spring, and a magnet positioned in the magnetic field of the coil. Although this is a conventionally well-known structure consisting of a coil that generates electricity by rotational displacement, other structures may be used.

This button, this signal input delay device 13 is provided with a delay adjustment device of an appropriate structure, so that the delay can be adjusted.

This acoustic system configured in this way is used as follows.

1. Adjust the low-pass filter 11, and then adjust the vibration unit 8.
An audio signal with a frequency below a certain frequency is allowed to flow on the side.

Then, the degree of delay is adjusted for each vibration unit 8 attached to each chair 3, so that chairs installed at a distance from the speaker 6 receive a greater delay effect.

When an audience member watches a movie or the like while sitting in the chair 3 in a theater that has been adjusted in this manner, vibrations synchronized with the speaker 6 will be transmitted to the audience's body.

As a result, a sense of realism can be experienced regardless of the volume of the sound emitted by the speaker 6.

In this case, the chairs 3 located far away from the speakers 6 emit vibrations with a large degree of delay, so the delay in sound transmission from the speakers 6 is matched, and the audience seated on any chair 3 will be at the same level. This will give you a sense of the realism of the conditions.

Since the present invention is configured as described above, it has the feature of being able to give the audience a more effective sense of realism than ever before.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the first floor of a theater implementing the present invention, and FIG. 2 is a partially cutaway side view of a chair according to the present invention.
FIG. 3 is a circuit diagram showing an example of a circuit that connects a speaker and a vibration unit to an amplifier. 1...Stage, 2...Screen, 3.
...Chair, 4.5...Wall, 6...
・Speaker, 7... Frame, 8... Vibration unit, 9... Amplifier, 13...
Signal input delay device.

Claims (1)

[Claims] 1. A vibration unit that vibrates a vibration part at a low frequency of the output audio signal of an amplifier is provided, a large number of chairs are provided with the vibration unit attached to a frame or a load supporting member, and the large number of chairs are connected to a screen or a stage. The input side of the vibration units provided on the large number of chairs arranged vertically and horizontally facing the screen is connected to the same sound source as a speaker installed near the screen or on a stage or wall facing the chair side. , by connecting each chair via a signal input delay device with a delay adjustment device, and by adjusting the delay adjustment device for each chair, it can be mounted near the screen, on the stage, or on the wall, etc. A sound system for use in theaters, etc., characterized in that chairs installed at a distance from speakers receive a large delay effect.