KR20140000108A - 9.1 channel speaker system - Google Patents

Abstract

The present invention relates to a 9.1 channel surround speaker system and, more specifically, to a speaker system, in which an inclosure includes one or more speakers, comprises a pair of upper and lower inclosures, and stands erect such that the upper and lower inclosures are in different heights, and the inclosure comprises a driving part which rotates the upper and lower inclosures from left to right to change the output direction of the speaker. An audio playback device comprises: a decoder for dividing an audio signal into 10 channel signals; a control module for checking upper or lower channel signals based on UFL, UFR, DFL, DFR, CEN, WO, UBL, UBR, DBL and DBR channel signals divided by the decoder, controlling to compensate the channel signals, and allocating the channel signals; and a signal compensation module for respectively changing the time different between upper and lower channel signals, allocated by the control module, and upper and lower channel output values to compensate the signals such that the user can feel the position and distance of a sound source which moves from bottom to top or vice versa. Thus, the speaker system can readily represent the position and directivity of the sound source, can provide sound effects according to the height difference, and can reproduce sound with high density around the user.

Description

9.1-channel speaker system that can easily express the sound effect according to the position change. {9.1 Channel Speaker System}

The present invention relates to a 9.1-channel surround speaker system, and in more detail, an enclosure including one or more speakers is installed in all directions in a state of pairing up and down, and thus the position of a sound source centering on a user. The present invention relates to a speaker system that not only expresses easily and directionally, but also brings out sound effects due to height differences, and services to listen to dense sounds.

In general, a home theater system (Home Theater) is a facility that brings out the same effect as a theater in a home, and is intended to obtain a clear picture and sound effects close to the original sound.

In addition, such a home theater system is generally equipped with a 5.1- or 7.1-channel multi-channel surround speaker system in the living room to obtain a sound effect close to the original sound. In the front, a front light channel speaker, a front left channel speaker, In addition, the center channel speaker is installed, and the rear light channel speaker and the rear left channel speaker are installed at the rear, and according to the embodiment, the light channel speaker and the left channel speaker are further included on the left and right sides. It is a facility that supports the sound effect on the video you are watching to feel in three dimensions.

In addition, such a system may construct a surround speaker system such as a 9.1 channel or an 11.1 channel by connecting a plurality of speakers to the output terminal more, but such a speaker system simply includes a plurality of speakers extended along a branched line. It just increased the volume of the sound.

In other words, it connects a number of speakers to a single amplifier to reproduce high-powered sound, and only gives a strong stimulus to the listener to feel real, but the sound effect according to the difference between the actual height and the height of the moving object It does not lead to true three-dimensional sound effects such as sound effects.

Moreover, such a system allows the viewer to drag and watch realistically from the designated seats of the theater to the living room, where they can relax. The spread and density of the sound output depending on the occupant's location and the output of the sound It feels different.

In other words, the home theater system is installed in a living room of about 10 to 20 pyeong. In particular, the living room is a space where residents living in the home can relax, and residents can sit or lie down comfortably regardless of their location. You will listen to music.

Therefore, users do not sit and watch in a designated seat as in a theater, but sit or lie down regardless of their position in a narrow living room, and because the speaker is fixedly installed and output in only one direction,

The degree of spread and density of the output sound is changed based on the occupant's location, which changes every moment, and the reality is often worse than expected.

Therefore, the present invention can bring out the sound effect according to the height and height recognition and change as well as the front, rear, left, and right in the living room, while more advanced 9.1 channel 3 that can easily service high-density sound even if the position or posture of the user is changed. It is aimed at a dimensional stereo sound speaker system.

To this end, in the present invention, in the speaker system in which a plurality of speakers and one woofer are installed everywhere, the speaker and the woofer are controlled by an audio reproducing apparatus so that a sound source is reproduced.

The speaker system is installed so that the height difference occurs by standing up and down in a state in which an enclosure containing one or more speakers (pair) is paired,

In addition, the upper enclosure and the lower enclosure of the pair forming the enclosure includes a drive unit for changing the output direction of the speaker by rotating the upper or lower enclosure from side to side,

An audio reproducing apparatus connected to the enclosure includes a decoder which separates an audio signal into ten channel signals;

A control module for identifying and instructing and assigning an upper channel or lower channel signal based on the UFL, UFR, DFL, DFR, CEN, WO, UBL, UBR, and DBL DBR channel signals separated by the decoder; ,

And a signal correction module configured to change the time difference and the output value of the signals of the upper channel and the lower channel allocated by the control module, respectively, so as to sense the position and distance of the sound source moving from the bottom to the top or the top to the bottom. It is characterized by.

In addition, the upper enclosure or the lower enclosure of the present invention, the location recognition camera for recording the location of the occupant is located indoors when driving,

The corresponding audio reproducing apparatus further comprises a position recognition module for determining a rotation radius of the upper and lower enclosures based on the image information transmitted through the position recognition camera.

In addition, the driving unit of the present invention is different from each other as the ball joint is moved in a state supported on the eccentric body is inserted into the inner portion of the upper or lower enclosure penetrating through the eccentric body having different heights on one side and the other side As the thick eccentric body rotates, the upper enclosure mounted thereon is tilted to one side by the rotation of the eccentric body and leaned downward.

The present invention is installed so that the height difference up and down in a state in which the enclosure (inclosure) containing one or more speakers in a paired pair, and delay the signal of the upper channel and the lower channel or adjust the output value, Not only front, rear, left and right, but also the three-dimensional sound effect caused by the height difference can be derived.

In addition, according to the present invention, as the upper enclosure or the lower enclosure rotates, the sound is reproduced centering on the place where the viewer is currently located so that the sound source can be more reliably listened to.

1 is an illustration of a system according to an embodiment of the present invention;
2 is a perspective view of an enclosure according to an embodiment of the present invention;
3 is a partial cross-sectional view of an enclosure according to an embodiment of the present invention.
4 is a block diagram of a system in accordance with an embodiment of the present invention.
5 is a graph of a system according to an embodiment of the invention.
6 is an exemplary diagram of a system according to another embodiment of the present invention.
7 is a block diagram of a system according to another embodiment of the present invention.

Hereinafter, specific details for carrying out the present invention will be described with reference to the accompanying drawings.

First, Figure 1 is an illustration of a 9.1-channel stereoscopic surround speaker system installed to practice the present invention, Figure 2 shows the appearance of an enclosure including a speaker unit according to an embodiment of the present invention.

As shown in the drawing, the present invention is installed in four directions with an enclosure including one or more speaker units (hereinafter referred to as speakers) centered around a center speaker.

At this time, the enclosure (1) forming a pair is divided into the upper enclosure (2) and the lower enclosure (3), they are connected to form a height difference in the upright and upright state to form a body. . In addition, the connection portion between the upper enclosure and the lower enclosure is made to include a drive unit 4 for changing the output direction of the sound by rotating the upper enclosure or the lower enclosure from side to side.

In addition, the driving unit 4 rotates the enclosure to the left and right so as to face the user resting in the living room, and according to the embodiment, the sound reproduced by controlling the upper enclosure and the lower enclosure is controlled in different directions. You can also have the output.

In addition, the driving unit 4 may manually adjust the direction in which the sound is output by rotating the upper enclosure or the lower enclosure, but according to the embodiment includes a motor and a rotating shaft therein panel operation or remote control operation of the audio playback device As the motor rotates to rotate the upper enclosure or the lower enclosure coupled to the left and right to adjust the direction in which the sound is output.

At this time, the upper enclosure (2) and the lower enclosure (3) may include a drive unit corresponding to the number corresponding to the upper enclosure and the lower enclosure to be rotated in different directions, in particular the upper coupled to rotate on the lower enclosure The enclosure is fixed only by rotating in one direction, and is configured to not rotate in the other direction.

Moreover, the driving unit 4 rotates the upper enclosure to the left and right to be inclined so that the upper enclosure is bent downward according to the height difference, so that the sound is output from the upper to the lower side, and can be easily expressed. To increase the density of the sound played in the direction.

That is, the driving unit 4 is such that the upper and lower surfaces of the lower enclosure 3 and the lower surface of the upper enclosure 2 are formed to be inclined with each other and are in close contact with each other, such that the upper and lower surfaces are axially coupled to each other so as to be in an upright state. Meanwhile, when the upper enclosure rotates, the upper enclosure is inclined along the upper surface of the inclined lower enclosure while being leaned downward. In addition, the driving unit 4 forms an inboard portion 4b inwardly formed on the lower surface of the upper enclosure formed to be inclined as shown in FIG. 3, and the edge is curved outward to form the curved surface 4c, and then stands upright. By rotating the convex upper end of the ball joint 4a inwardly into the inner part, the upper enclosure may be tilted downward while tilting when the upper enclosure is rotated. At this time, the speaker directions of the upper enclosure 2 and the lower enclosure 3 are installed in opposite directions, and the speaker is positioned in the same direction as the lower enclosure when the upper enclosure rotates.

For reference, the driving unit 4 is a ball joint that moves integrally between the upper enclosure and the lower enclosure through the eccentric body having different heights of one side and the other side is inserted into the inner part of the upper or lower enclosure and supported on the eccentric body. Rotating in the state, in which the eccentric body having a different thickness is rotated while the upper enclosure mounted on it may be tilted to one side by the rotation of the eccentric body to be leaned to the lower side.

In addition, the enclosure 1 is connected to the audio reproducing apparatus 20, and in particular, by controlling only part or all of the speakers of the enclosures installed in all four directions, various effects such as a sound effect according to a vertical height difference or a sound effect on a moving object. Easily bring out sound effects.

In other words, among the four upper enclosures located in the upper front, the speaker of the upper enclosure located in the upper rear and the speaker of the upper enclosure located in the upper front makes it possible to calculate the sound effect that a specific object passes over the viewer's head without complicated calculations. It can be expressed simply. In addition, among the four enclosures located at the top, the speakers of two enclosures located in the upper front and the two enclosures located in the lower rear of the four speakers located at the lower side are controlled so that the arrow is tilted downward from the top to the viewer. The sound effect of an object that is plugged or slipped and moves obliquely can be easily obtained. In addition, by using the speaker of the four enclosures located at the top and the speaker of the four enclosures located at the bottom, it is possible to effectively express the effect sound such as rainwater or waterfall falling from the top to the rich volume and sound field.

Therefore, the present invention forms a pair of pairs and the enclosures are arranged in all directions to construct a 9.1-channel speaker system, so that the density and the sense of position and direction according to the difference in height and height as well as the front, rear, left and right, and the sound output can be easily expressed and recognized. It will be possible.

4 illustrates a configuration of an audio reproducing apparatus 20 that controls an enclosure that forms a pair of up and down pairs according to an embodiment of the present invention. A decoder 21 for receiving an audio signal and separating the signal into 10 channel signals;

A control module for instructing to correct all or part of upper or lower channel signals based on the UFL, UFR, DFL, DFR, CEN, LFE, UBL, UBR, and DBL DBR channel signals separated by the decoder 21 ( 22),

By changing the time difference and the output value of the signal of the upper channel or the lower channel allocated by the control module 22 to generate a correction value so as to feel the position and distance of the sound source moving from the bottom to the top or top to bottom It comprises a signal correction module (23).

Here, the signal correction module 23 is a delay module 24 that can adjust the delay time of the upper channel and the lower channel, respectively, and each output level of the upper channel and the lower channel adjusted by the delay module 24 It includes a gain module 25 that can be adjusted.

The audio reproducing apparatus may further include a driving module which instructs the driving unit to change direction to one side or the other side by controlling the driving unit.

First, the decoder 21 includes an up front left (UFL) channel, an up front right (UFR) channel, and a down front left (DFL) channel based on an audio signal input from the outside. ) Channel, Down Front Right (DFR) Channel, Center (CEN) Center, Woofer (WO) Channel, Up Back Left (UBL) Channel, Up Rear Left (UBL: Up) It is separated into signals of the Back Right channel, the Down Back Left (DBL) channel, and the Up Back Right (UBR) channel.

In addition, the control module 22 is based on the UFL, UFR, DFL, DFR, CEN, WO, UBL, UBR, DBL DBR channel signal separated by the decoder 21, the upper channel signal (UFL, UFR) , UBL, UBR) and the lower channel signals (DFL, DFR, DBL DBR) are separately recognized and assigned to the signal correction module 23. At this time, the allocated signal is dualized into the signal of the upper channel and the signal of the lower channel.

In addition, the signal correction module 23 includes an upper front left (UFL) channel, an upper front right (UFR) channel, a lower front left (DFL) channel, and a lower front light (DFL). DFR: Down Front Right (CEN) Center, Woofer (WO), Up Back Left (UBL), Up Back Right (UBL), Lower Back Delay time and output value are corrected and convoluted for the signals of the Left Back Down (DBL) and Up Back Right (UBR) channels and output to each speaker.

At this time, the signal correction module 23 changes the delay time and the output value of the signals of the upper channel and the lower channel based on a head related transfer function (HTRF) to easily sense the position and distance of the sound source located above or below. Can be expressed and recognized, and sometimes simply expressed without complicated calculations.

In addition, the head related transfer function (HTRF) is a Fourier change by recording sounds from a plurality of speakers arranged at various angles around a dummy head in an anechoic chamber.

That is, the head transfer function divides elevation and azimuth at regular intervals around the dummy head, and then outputs an impulse signal at each of the subdivided angles to output an impulse signal. The impulse response of the signal reaching the right ear is measured. At this time, since the head transfer function varies depending on the incoming angle, the head transfer function is measured and databased for the sounds coming from various locations.

In addition, the signal correction module 23 further includes a setting module 26 capable of reflecting a delay time error of a signal that may occur according to a vertical height difference of a speaker installed while forming a pair of up and down pairs. Made up,

That is, when two speakers are installed up and down, it is irrelevant if the installation interval of the speaker is large, but if the installation interval is small, it is difficult to use the stereoscopic sound effect according to the height. Therefore, the setting module 26 capable of correcting the delay time small or large according to the height difference of the installed speaker is required. In addition, the setting module 26 reflects the direct sound, the reflected sound, or the reverberation pattern for the sound source by the size, structure, wall, material, etc. of the space together with the application, so as to derive a more accurate sound effect. .

In addition, the reason that a person can recognize the direction of the location of the sound source is because there is a time difference for the sound coming into the two ears, the delay module 24 is the time difference (ITD: Interaural Time Difference) to reach both ears To adjust the position and direction of the sound source. That is, among the speakers installed at the top and the speakers installed at the bottom, it is possible to know that the direction of recognizing the sound of the first output speaker according to the time difference is the position of the sound source.

In addition, the gain module 25 of the signal compensation module 23 adjusts the intensity difference (IID: Interaural Intensity Difference) reaching the two ears to secure a sense of distance of the sound source. In other words, when the output level of the speaker installed in the upper part decreases gradually and the output value of the speaker installed in the lower part becomes larger and larger, the viewers have a feeling of being moved from the top to the bottom by the increasing output value.

In addition, FIG. 5 shows a process in which the dual channel signal and the lower channel signal are filtered, and according to an embodiment, the signal of the upper channel is output before the signal of the lower channel based on the head transfer function. The upper channel signal is getting smaller and the lower channel signal is getting bigger.

That is, the signal adjusted through the delay module 24 and the gain module 25 is that the speaker installed at the top of the speaker installed at the top and the bottom outputs a specific sound first, and the speaker at the bottom is specified later. The sound is output to express that there is an object on the upper side. Also, when the sound of the upper speaker decreases and the sound of the lower speaker becomes louder, the upper object falls down. It will be possible.

Therefore, the present invention by controlling the delay time and the output value through the delay module 24 and the gain module 25, by securing the position and distance of the sound source for the up and down height can derive the three-dimensional stereoscopic sound effect according to the change in height Will be.

6 and 7 are exemplary views and block diagrams showing a state in which a dense sound is output based on a user by recognizing a resident's position and automatically rotating the enclosure according to another embodiment of the present invention. to be.

As shown in the drawing, the present invention is installed in four directions with an enclosure including one or more speaker units (hereinafter referred to as speakers) centered around a center speaker. At this time, the enclosure forming a pair is divided into the upper enclosure (2) and the lower enclosure (4), they are connected to form a height difference in the upright and upright state to form a body. In addition, the connection between the upper enclosure and the lower enclosure is made to include a drive unit (4) for changing the output direction of the sound by rotating the upper enclosure or the lower enclosure from side to side.

In particular, the enclosure (1) is provided with a location-recognition camera (5) to shoot the location of the occupant is located indoors inside,

In the corresponding audio reproducing apparatus 20, the audio reproducing apparatus 20 connected to the enclosure includes a decoder 21 for separating the audio signal into 10 channel signals;

A control module for identifying and instructing an upper channel or lower channel signal based on the UFL, UFR, DFL, DFR, CEN, WO, UBL, UBR, and DBL DBR channel signals separated by the decoder, instructing and correcting the same; 22),

A signal correction module 23 for correcting the time difference and the output value of the signals of the upper channel and the lower channel allocated by the control module, respectively, so as to sense the position and distance of the sound source moving from the bottom to the top or top to bottom;

It includes a position recognition module 28 for receiving the image information taken through the position recognition camera 5 to recognize the user's position and determine the radius of rotation.

For reference, the position recognition module checks the position of the user based on the received image information, and determines the rotation radius of the upper enclosure or the lower enclosure. Then, the determined value is applied to the control module to control the driving unit to rotate the upper enclosure and the lower enclosure to the determined position so that the sound is output in the determined direction.

Therefore, even if the user sits comfortably on the wall, lying on a carpet, or sitting on a sofa, regardless of the location, the speaker outputs sound in the direction in which the user is located, so that the speakers can hear stereoscopic and dense sound. Will be.

1: Enclosure 2: Upper enclosure
3: Lower Enclosure 4: Drive Section
4a: Ball joint 4b: Inner part
4c: curved surface 5: position recognition camera
10: upper front left speaker 11: upper front light speakers
12: Lower front left speaker 13: Lower front light speaker
14: center speaker 15: woofer
16: Upper rear left speaker 17: Upper rear light speaker
18: Lower rear left speaker 19: Lower rear light speaker
20: Audio playback device 21: Decoder
22: control module 23: signal correction module
24: Delay module 25: Gain module
26: setting module 27: driving module
28: position recognition module

Claims (6)

In a speaker system in which a woofer of a plurality of speakers is provided everywhere, the speaker and the woofer are controlled by an audio reproducing apparatus, and a sound source is reproduced.
The speaker system is installed so that the height difference occurs by standing up and down in a state in which an enclosure containing one or more speakers (pair) is paired,
The upper enclosure and the lower enclosure of the pair of enclosures include a drive unit for changing the output direction of the speaker by rotating the upper or lower enclosure from side to side,
An audio reproducing apparatus connected to the enclosure includes a decoder which separates an audio signal into ten channel signals;
A control module for identifying and instructing and assigning an upper channel or lower channel signal based on the UFL, UFR, DFL, DFR, CEN, WO, UBL, UBR, and DBL DBR channel signals separated by the decoder; ,
And a signal correction module configured to change the time difference and the output value of the signals of the upper channel and the lower channel allocated by the control module, respectively, so as to sense the position and distance of the sound source moving from the bottom to the top or the top to the bottom. 9.1-channel speaker system that can easily express the sound effect according to the position change. The method of claim 1,
The upper enclosure or the lower enclosure has a location-aware camera that photographs the occupant's location indoors when driven;
The corresponding audio reproducing apparatus further includes a position recognition module which receives the image information captured by the position recognition camera and recognizes the occupant's position based on the received image information and determines the rotation radius of the upper and lower enclosures. 9.1-channel speaker system that can easily express the sound effect of the position change. 3. The method according to claim 1 or 2,
The driving part is formed between the upper enclosure and the lower enclosure through the eccentric body having different heights on one side and the other side to move integrally, the upper part of the ball joint is fitted inside the inner part of the upper enclosure to the top of the eccentric body 9.1-channel speaker system that can easily express the sound effect of the change in position, characterized in that the rotation is coupled in a supported state. 3. The method according to claim 1 or 2,
The signal correction module of the audio reproducing apparatus connected to the upper enclosure and the lower enclosure,
Delay module implemented to recognize the position and direction of the sound source by adjusting the delay time of the upper channel and the lower channel,
9.1-channel speaker system that can easily express the sound effect according to the position change, characterized in that it further comprises a gain module implemented to recognize the sense of distance of the sound source by adjusting the output value of the upper channel and the lower channel. 5. The method of claim 4,
The signal correction module 9.1 channel speaker system that can easily express the sound effect of the position change, characterized in that further comprises a setting module that reflects the delay time error that may occur according to the installation interval of the enclosure. 3. The method according to claim 1 or 2,
The driving unit is formed to be inclined to the upper surface and the lower surface of the upper enclosure inclined to each other, and the inner indentation and the inner surface of the inner inlet to the lower surface to form a curved surface by bending outwards to the inner edge of the upper edge of the upright ball joint 9.1, which can be easily expressed by changing the position of the upper enclosure, while the upper enclosure is inclined along the upper surface of the lower enclosure while the upper enclosure rotates. Channel speaker system.

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