WO2010134653A1

WO2010134653A1 - Multi-channel headphone system

Info

Publication number: WO2010134653A1
Application number: PCT/KR2009/002699
Authority: WO
Inventors: 이동석
Original assignee: 에스에프원(주)
Priority date: 2009-05-22
Filing date: 2009-05-22
Publication date: 2010-11-25

Abstract

The present invention provides a headphone formed in a multi-channel headphone system, comprising: a front unit including a front speaker which receives a sound signal corresponding to the front from sound equipment and reproduces the received sound signal, and a cylindrical tubular front resonance tube which is connected to the front speaker and is formed with a front chamber therein; a rear unit including a rear speaker which receives a sound signal corresponding to the back from the sound equipment and reproduces the received sound signal, and a tubular rear resonance tube of which one end is connected to the rear speaker and the other end is connected to the front chamber of the front resonance tube to resonate the sound reproduced from the rear speaker and induce the resonated sound to the front chamber; and a center unit including a center speaker which receives a sound signal corresponding to the center from the sound equipment and reproduces the received sound signal, and a tubular center resonance tube of which one end is connected to the center speaker and the other end is connected to the front chamber of the front resonance tube to resonate the sound reproduced from the center speaker and induce the resonated sound to the front chamber. According to such a multi-channel headphone system, natural and clear sounds are reproduced because a resonance tube structure for artificially making the time difference generated from the sound space is adopted in order to generate an ideal time difference in the sound field, and the sound field is produced without addition to the configuration, thereby simplifying the system.

Description

Multichannel headphone system

The present invention relates to a multichannel headphone system, and more particularly, to a multichannel headphone system capable of naturally and clearly reproducing three-dimensional stereophonic sound by artificially generated sound parallax.

The audio speaker system has rapidly developed from the initial stereo two channels to multichannels such as 5.1 channel, 6.1 channel, and 7.1 channel. As an example of multi-channel, the 5.1-channel system uses the center (C), front left (FL), and front right (FR) to three-dimensionally reproduce sound signals output from sound equipment (home theaters, DVD players, PCs, game machines, etc.). ), Rear left (RL), rear right (RR) speaker and woofer (W). Here, a woofer is a bass-only player, which is referred to as a 5.1-channel system because it has no directivity and is regarded as 0.1 channel.

Recently, multi-channels have appeared in the headphone of the listener, not the speaker system.

Figure 1 is disclosed in the Republic of Korea Utility Model Registration (Registration No .: 20-0319789), a wiring diagram showing a conventional 5.1-channel headphone system is shown.

As shown, the conventional 5.1-channel headphone system outputs a 5.1-channel signal including signals of the center (C), front left (FL), front right (FR), rear left (RL), and rear right (RR). The right unit including a right front unit, a right middle unit, a right rear unit, and a right vibration unit for reproducing a signal of each channel output from the sound device 60, and a left front unit A headphone 50 composed of a left unit including a left middle unit, a left rear unit, and a left vibration unit; and a headphone unit positioned between the sound device 60 and the headphone 50 to output each channel signal output from the sound device. It is provided with a relay means 70 for transmitting to each unit of the regeneration.

However, in the conventional 5.1-channel headphone system as described above, since the units for sound reproduction are all located adjacent to the ear, there is almost no parallax in which the sound reaches the ear, so that the acoustic separation function is larger than that of a speaker system installed in a large space. The sound is remarkably dropped, and the sound that is reproduced eventually has a flat feeling lacking a three-dimensional effect.

More specifically, there are two human ears, which are about 20cm apart from each other. Thus, when the sound comes from the front left side, the sound reaching both ears is time lag and its volume is slightly different. The face acts as an obstacle between the pronunciation body and the right ear, which causes the sound of the right ear to be smaller than the sound of the left ear. On the other hand, sounds with low frequency easily diffract obstacles, but sounds with high frequency are difficult to diffract obstacles because of their straightness. Therefore, the sound of the right ear is already attenuated higher than the sound of the left ear. In other words, there are time differences, volume differences, and tone differences in the sounds heard by both ears, and the human brain processes the data to find the direction. For this reason, putting the speakers in one headphone at the same time eliminates the sense of distance.

In order to solve the above problems, the Republic of Korea Registered Utility Model Publication (Registration No .: 20-0319770), a multi-channel headphone system for delaying, attenuating and mixing the input sound signal as shown in FIG. It is starting.

Referring to the drawings, the conventional multichannel headphone system as described above includes a multichannel headphone 20 including a front unit and a rear unit and a correction means 30.

Here, the correction means 30, the first delay element (32a, 32b) for delaying each sound signal input to the front unit, and the sound input to the outer unit by attenuating a part of each sound signal input to the right unit A first signal attenuator / mixer 34 mixing to the signal, and a second signal attenuator / mixer 34 'attenuating a portion of each sound signal input to the left unit and mixing the sound signal input to the right unit. do.

Although not shown, the first and second signal attenuators / mixers 34 and 34 'delay the respective sound signals inputted to the first and second signal attenuators / mixers 34 and 34' by a predetermined time. And a second delay element for inputting to the left unit or the right unit.

Therefore, according to the conventional multi-channel headphone system as described above, by compensating the volume that the left and right ears can feel in order to match the actual sound environment, and artificially create the time difference between the headphones, even with headphones, You can feel a sense of presence.

However, even in the conventional multi-channel headphone system as described above, since the units for sound reproduction are located adjacent to the ear, each band having the same amount of energy interferes and a masking phenomenon occurs that causes the sound to disappear. This is difficult, and even reproduction of each band is impossible.

In addition, due to the role of the auricle in the actual sound space, sounds coming from the same phonetic body sound remarkably differently in front and behind, and this difference plays a decisive role in making the front and rear feel. By the way, the conventional multi-channel headphone system compensates the volume that the left and right ears can feel and artificially makes the time difference, but does not consider the time difference and the volume of the sound felt by the listener's ear along the front and rear directions. It does not have the limit.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a multi-channel headphone system capable of naturally and clearly reproducing three-dimensional stereophonic sound by artificially generated sound parallax.

The multi-channel headphone system of the present invention for achieving the above object comprises a pair of headphones disposed in each of the listener's ears, the headphone receives the sound signal corresponding to the front from the sound equipment A front unit including a front speaker for reproducing, and a cylindrical tubular front resonator tube connected to the front speaker and forming a front chamber therein; A rear speaker that receives and reproduces a sound signal corresponding to the rear from an acoustic device, and one end of which is connected to the rear speaker and the other end communicates with the front chamber of the front resonance tube to resonate the sound reproduced from the rear speaker and the front chamber A rear unit comprising a tubular rear resonance tube leading to the; And a center speaker for receiving and reproducing an acoustic signal corresponding to a center from an acoustic device, and one end of which is connected to the center speaker and the other end of which communicates with the front chamber of the front resonance tube to resonate the sound reproduced from the center speaker. And a center unit including a tubular center resonance tube leading to the front chamber.

The length of the rear resonance tube is preferably longer than the length of the center resonance tube.

The end of the rear resonance tube communicating with the front chamber is preferably arranged so as to be out of phase with the end portion of the center resonance tube communicating with the front chamber based on the circumferential direction of the front resonance tube.

Furthermore, the headphone is further provided with a divider plate installed on the outer wall of the front resonator tube to divide the front resonator tube forward and backward, and the rear unit and the center unit are preferably disposed to face each other at the boundary of the divider plate.

According to the multi-channel headphone system according to the present invention, the following effects are obtained.

First, according to such a multi-channel headphone system, by employing a resonance tube structure that artificially makes a time difference occurring in the sound space, it is possible to generate a time difference of the ideal sound field, so that natural and clear sound can be reproduced.

Second, by adopting the indirect sound reproduction method through the resonance tube instead of the direct sound, it has an effect of preventing hearing loss.

Third, according to the adjustment and optimization of the resonance tube length, it is possible to naturally produce artificial space and sound delay.

Fourth, the sound field can be produced without additional configuration, simplifying the system.

1 and 2 are wiring diagrams showing a conventional multi-channel headphone system,

3 is a perspective view showing the headphones provided in the multi-channel headphone system according to an embodiment of the present invention;

4 is a front view of the headphones shown in FIG. 3;

FIG. 5 is a partial cross-sectional perspective view of the headphones shown in FIG. 3 viewed from the “X” direction; FIG.

FIG. 6 is a partial cross-sectional perspective view of the headphones shown in FIG. 3 viewed from the “Y” direction; FIG.

7 is a conceptual diagram for explaining the operation of the headphones shown in FIG.

FIG. 8 is a wiring diagram of the multichannel headphone system shown in FIG. 3.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

3 is a perspective view of a headphone provided in a multi-channel headphone system according to an embodiment of the present invention, FIG. 4 is a front view of the headphone shown in FIG. 3, and FIG. 5 is a partial cross-sectional view of the headphone shown in FIG. 6 is a partial cross-sectional perspective view of the headphone shown in FIG. 3 viewed from the "Y" direction, FIG. 7 is a conceptual diagram for explaining the operation of the headphone shown in FIG. 3, and FIG. 8 is a wiring diagram of the multichannel headphone system shown in FIG. to be.

First, as shown in Figs. 3 and 4, the multi-channel headphone system 1 according to the embodiment of the present invention includes a pair of headphones 100 disposed at each of both ears of the listener. In the drawing, for convenience, one headphone 100 is disposed on the left ear of the listener, but the headphone disposed on the right ear of the listener also has the same configuration as the headphone 100 disposed on the left ear, and thus, repeated description thereof will be omitted here. do. Although not shown, the pair of headphones may be connected to each other by separate connection members surrounding the listener's head.

The headphone 100 includes front, rear, and

center units

110, 120, 130 for reproducing sound signals corresponding to the front, rear, and center, respectively, and leading them to the listener's ears.

The front unit 110 includes a front speaker 111 and the front resonance tube (112). Here, the front speaker 111 is connected by a plug or a jack and receives and reproduces an acoustic signal corresponding to the front from an acoustic device (not shown). In addition, the front resonance tube 112 has one end connected to the front speaker 111 and forms a front chamber 113 therein. The front resonance tube 112 has a cylindrical tube shape. The sound reproduced by the front speaker 111 is transmitted to the listener's ear through the front chamber 112.

The rear unit 120, as shown in Figure 5 includes a rear speaker 121, and a rear resonance tube (122). Here, the rear speaker 121 receives and reproduces an audio signal corresponding to the rear from an audio device. In addition, the rear resonance tube 122, one end 122a is connected to the rear speaker 121 and the other end 122b is in communication with the front chamber 113 of the front resonance tube 112. The rear resonance tube 122 resonates the sound reproduced from the rear speaker 121 to guide the front chamber 113.

As shown in FIG. 6, the center unit 130 includes a center speaker 131 and a center resonance tube 132. Here, the center speaker 131 receives and reproduces an audio signal corresponding to the center from an acoustic device. In addition, the center resonance tube 132, one end 132a is connected to the center speaker 131 and the other end 132b is in communication with the front chamber 113 of the front resonance tube 112. The center resonance tube 132 resonates the sound reproduced from the center speaker 131 to guide the front chamber 113.

On the other hand, in order to correct the time difference and volume of the sound felt by the listener's ears along the front and rear direction, the length of the rear resonance tube 122 has a structure longer than the length of the center resonance tube 132. . However, the actual length of the tube can be designed to form a time difference by adjusting to the characteristics of the sound, the sound is properly diffracted to feel a three-dimensional feeling.

In addition, the end 122b of the rear resonance tube 122 communicating with the front chamber 113 is a center resonance tube communicating with the front chamber 113 when viewed based on the circumferential direction of the front resonance tube 112 ( It is preferable that the phase is arranged to be out of phase with the end portion 132b of the 132. In this way, by inserting the phases of the rear resonance tube 122 and the center resonance tube 132 so as not to interfere with each other, the vibration energy pressures synergize with each other to cause a vortex-type resonance, thereby providing a natural sound pressure. Can be increased.

The headphone 100 may further include a partition plate 140 installed on an outer wall of the front resonance tube 113 to divide the front resonance tube 113 back and forth. In such a structure, the rear unit 120 and the center unit 130 may be disposed to face each other with a partition plate 140 as shown.

Meanwhile, as shown in FIG. 8, when a speaker or a low volume is required, the sub channel bridge may be connected to the front unit 110 to flexibly cope with the problem.

Hereinafter, the operation of the multi-channel headphone system as described above will be described with reference to the accompanying drawings.

3 to 8, when the front speaker 111 of the front unit 110 receives an audio signal corresponding to the front from a sound device connected by a plug or a jack, the reproduced sound is multi-dome ( It is connected to the ear of the listener through the front chamber 113 formed in the front resonator tube 112 connected to the cylindrical tubular having a multi-dom structure.

When the rear speaker 121 of the rear unit 120 receives and reproduces an acoustic signal corresponding to the rear, the reproduced sound is resonated through the rear resonance tube 122 to be guided to the front chamber 113.

In the center unit 130, similarly to the rear unit 120, when the center speaker 111 receives and reproduces an acoustic signal corresponding to the center, the reproduced sound is resonated through the center resonance tube 132. Guided to the front chamber 113.

On the other hand, the end 122b of the rear resonance tube 122 in communication with the front chamber 113 and the end 132b of the center resonance tube 132 in communication with the front chamber 113 are. Based on the circumferential direction of the front resonator tube 112, the phases are arranged to be different in phase so that they do not interfere with each other, and the pressure of the vibration energy synergizes with each other to cause a vortex-type resonance, thereby resulting in a natural sound pressure. Can be increased.

In this way, the sound of the rear and center diffracted through the end 122b of the rear resonance tube 122 and the end 132b of the center resonance tube 132 is combined with the sound of the front to obtain a rich volume and a natural sound field. You can feel the sense of space like a music hall.

In addition, by employing the structure of the resonance tube (112, 122, 132) different in length, by artificially creating a time difference occurring in the sound space, it is possible to generate a time difference of the ideal sound field, thereby reproducing a natural and clear sound.

Moreover, by adopting the indirect sound reproduction method through the resonance tube instead of the direct sound, it has an effect of preventing hearing loss. In addition, according to the adjustment and optimization of the resonance tube length, the artificial space can be naturally produced and the sound delay can occur naturally. And since the sound field can be produced without additional configuration, the system can be simplified.

On the other hand, in the embodiment of the present invention described above based on the 5.1-channel headphone of the multi-channel headphone, the concept of the present invention that employs a resonance tube structure to artificially create the time difference is a six-channel, seven-channel headphone Applicable to multi-channel headphones such as will be apparent.

Claims

A multichannel headphone system comprising a pair of headphones disposed in each of the listener's ears, wherein the headphones comprise:

A front unit including a front speaker for receiving and reproducing an acoustic signal corresponding to the front from an acoustic device, and a cylindrical tubular front resonance tube connected to the front speaker and forming a front chamber therein;

A rear speaker that receives and reproduces a sound signal corresponding to the rear from an acoustic device, and one end of which is connected to the rear speaker and the other end communicates with the front chamber of the front resonance tube to resonate the sound reproduced from the rear speaker and the front chamber A rear unit comprising a tubular rear resonance tube leading to the; And

A center speaker for receiving and reproducing an acoustic signal corresponding to a center from an acoustic device, and one end of which is connected to the center speaker and the other end of which communicates with the front chamber of the front resonance tube to resonate the sound reproduced from the center speaker by the front chamber Multi-channel headphone system having a center unit including a tubular center resonance tube to guide to.
The method of claim 1,

And the length of the rear resonance tube is longer than the length of the center resonance tube.
The method according to claim 1 or 2,

Based on the circumferential direction of the front resonance tube, the end of the rear resonance tube in communication with the front chamber, the multi-channel headphone system, characterized in that arranged in phase with the end of the center resonance tube in communication with the front chamber .
The method of claim 3, wherein the headphones,

It is provided on the outer wall of the front resonance tube further comprises a partition plate for separating the front resonance tube back and forth,

The rear unit and the center unit, the multi-channel headphone system, characterized in that disposed opposite to each other on the basis of the partition plate.