KR20170091569A - System and method for compatible multi channel audio - Google Patents

Abstract

Disclosed are a multi-channel audio converting method and system. The multi-channel audio converting system comprises an output position confirming unit, a signal assigning unit, a signal distributing unit, and a channel signal calculating unit. The output position confirming unit confirms an output position for each channel of an output multi-channel audio signal and an input multi-channel audio signal. The signal assigning unit assigns a channel signal of an input channel to an output channel when the input channel and the output channel having the same output position for each channel exist in the output multi-channel audio signal and the input multi-channel audio signal. The signal distributing unit distributes a channel signal of the input multi-channel audio signal to two channels of the output multi-channel audio signal which is closest to a channel of the input multi-channel audio signal. The channel signal calculating unit calculates a channel signal assigned to each channel of the output multi-channel audio signal based on a signal assigned for each channel of the output multi-channel audio signal or the distributed channel signal.

Description

SYSTEM AND METHOD FOR COMPUTIBLE MULTI CHANNEL AUDIO < RTI ID = 0.0 >

The present invention relates to a multi-channel audio conversion system and method, and more particularly, to a system and method for converting 10.2 channel audio signals to other multi-channel audio signals.

Multichannel audio playback technology has been extended to 5.1 channels and 7.1 channels starting from 2-channel stereo, and recently a 22.2-channel audio playback system using three layers has also been developed.

However, since the 22.2 channel audio system has a high sound field reproduction performance, it requires too many speakers, so that it is difficult to apply it to an environment where it is difficult to secure a sufficient space such as a home.

Therefore, new multichannel that can provide a sound field similar to 22.2 channels using less than 22.2 channels, compatibility with new 2.0 / 5.1 / 7.1 channels and new 22.2 standard channels A method for enabling a user to have a plurality of devices is required.

The present invention provides a system and method for converting a 10.2 channel audio signal to another multi-channel audio signal that can provide a sound field similar to 22.2 channels using less than 22.2 channels.

According to an aspect of the present invention, there is provided a multi-channel audio conversion system including an output position confirmation unit for confirming output positions of output multi-channel audio signals and input multi-channel audio signals, A signal assigning unit for assigning a channel signal of the input channel to the output channel when the input multi-channel audio signal and the input multi-channel audio signal have an input channel and an output channel, A signal distributor for distributing a channel signal of the input multi-channel audio signal to two channels of an output multi-channel audio signal closest to a channel of the input multi-channel audio signal; And a channel signal calculation unit for calculating a channel-by-channel signal of the output multi-channel audio signal based on the channel signal allocated to each channel of the output multi-channel audio signal, or the divided channel signal.

The channel signal calculation unit of the multi-channel audio conversion system according to an embodiment of the present invention may calculate a channel signal of the 22-channel audio signal according to a predetermined constant for each of the upper layer, the middle layer, the bottom layer, Channel audio signal to adjust the overall sound level of the output multi-channel audio signal.

The channel signal calculation unit of the multi-channel audio conversion system according to an embodiment of the present invention may be configured such that when the input multi-channel audio signal is a 10.2-channel audio signal, the channels located on the plane, The overall sound level of the output multi-channel audio signal can be adjusted by multiplying each channel by a specific constant.

According to another aspect of the present invention, there is provided a method for converting multi-channel audio, comprising: checking an output position of an output multi-channel audio signal and an input multi-channel audio signal; Determining whether there is an input channel and an output channel which are channels having the same output position per channel among the output multi-channel audio signal and the input multi-channel audio signal; Assigning a channel signal of the input channel to the output channel when the input multi-channel audio signal and the input multi-channel audio signal include an input channel and an output channel, Channel audio signal and the input multi-channel audio signal have the same output position for each channel, the output multi-channel audio signal closest to the channel of the input multi-channel audio signal is input to two channels of the input multi- Distributing a channel signal; And calculating a channel-by-channel signal of the output multi-channel audio signal based on the channel signal allocated to each channel of the output multi-channel audio signal, or the divided channel signal.

The present invention can increase the compatibility of a 10.2 channel audio signal by converting a 10.2 channel audio signal, which can provide a sound field similar to 22.2 channels, to another multi-channel audio signal using less than 22.2 channels.

1 is a block diagram illustrating a configuration of a multi-channel audio conversion system according to an embodiment of the present invention.
2 is a diagram showing an example of the layout of a conventional 22.2 channel audio signal.
3 is a diagram showing an example of the layout of a 10.2 channel audio signal according to the present invention.
FIG. 4 is a diagram illustrating an example of matching between a 22-channel audio signal and an L-channel signal of a 10.2-channel multi-channel audio signal according to an embodiment of the present invention.
5 is a diagram illustrating an example of matching between a C-channel signal of a 22.2-channel audio signal and a 10.2-channel multi-channel audio signal according to an embodiment of the present invention.
6 is a diagram illustrating an example of matching between a LH channel signal of a 22.2-channel audio signal and a 10.2-channel multi-channel audio signal according to an embodiment of the present invention.
FIG. 7 is a diagram illustrating an example of matching between an LS channel signal of a 22.2-channel audio signal and a 10.2-channel multi-channel audio signal according to an embodiment of the present invention.
8 is a diagram illustrating an example of matching between a 22.2 channel audio signal and an LB channel signal of a 10.2 channel multi-channel audio signal according to an embodiment of the present invention.
9 is a diagram illustrating an example of matching between a 10-channel audio signal and an L channel signal of a 7.1-channel multi-channel audio signal according to an embodiment of the present invention.
10 is a diagram illustrating an example of matching between a 10.2 channel audio signal and an LB channel signal of a 7.1 channel multi-channel audio signal according to an embodiment of the present invention.
11 is a diagram illustrating an example of matching between LS channel signals of a 10.2 channel audio signal and a 5.1 channel multi-channel audio signal according to an embodiment of the present invention.
12 is a diagram illustrating an example of matching between a 10-channel audio signal and an L channel signal of a 2.0-channel multi-channel audio signal according to an embodiment of the present invention.
13 is a flowchart illustrating a multi-channel audio conversion method according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The multi-channel audio conversion method according to an embodiment of the present invention can be performed by a multi-channel audio conversion system.

1 is a block diagram illustrating a configuration of a multi-channel audio conversion system according to an embodiment of the present invention.

The multi-channel audio conversion system according to an exemplary embodiment of the present invention converts a 10.2-channel audio signal, which can provide a sound field effect similar to a 22.2-channel audio signal, to another multi-channel audio signal using a smaller number of channels than a 22.2- Can be converted.

Referring to FIG. 1, the multi-channel audio conversion system may include an output position confirmation unit 110, a signal allocation unit 120, a signal distribution unit 130, and a channel signal calculation unit 140.

The output position confirmation unit 110 can check the output position of each input multi-channel audio signal received from the user and the output position of each output multi-channel audio signal generated by converting the input multi-channel audio signal.

At this time, the input multi-channel audio signal may be a 22.2-channel audio signal as shown in FIG. At this time, the 22.2 channel audio signal has a position 210 for outputting the channel signal of each channel, and each channel includes an upper layer 221, a middle layer 222, a bottom layer bottom layer < RTI ID = 0.0 > 223 < / RTI >

The upper layer 221 includes channels output from a higher position on the basis of the user, the middle layer 222 includes channels output from the same height as the user, and a lower layer Output channels, or subwoofer channels.

In addition, as shown in FIG. 3, the 10.2 channel audio signal according to the present invention sets output positions of seven channels on a plane of the same height around a user, Output position, and can provide two subwoofer channels.

150° 위치에 출력 위치가 배치된 LB/RB(Left Back/Right Back)채널을 포함할 수 있다.Specifically, the seven planar channels include a C (Center) channel in which the output position is arranged at the front center of the user, an L / R (Left / Right) channel in which the output position is disposed at the front ± 30 ° position of the user, An LS / RS (Left Side / Right Side) channel in which the output position is placed at a position of ± 90 ° of the user,

And an LB / RB (Left Back / Right Back) channel in which the output position is disposed at a 150 [deg.] Position.

Also, The three channels having a high height include an LH / RH (Left Height / Right Height) channel in which an output position is disposed at an upper 30 ° to 45 ° position of the L / R channel, And a TC (Top Center) channel.

The multi-channel audio conversion system is a multi-channel audio conversion system in which, when the input multi-channel audio signal is a 10.2 channel audio signal, a multi-channel audio conversion system such as a 7.1 channel audio signal, a 5.1 channel audio signal, Channel audio signal as an output multi-channel audio signal.

When the input multi-channel audio signal and the input multi-channel audio signal have an input channel and an output channel, which are channels having the same output position per channel, the signal assigning unit 120 assigns a channel signal of the input channel to the output channel have.

For example, when the output positions of the SiL channel of 22: 2 channel and the LS channel of 10.2 channel are the same, the signal allocation unit 120 assigns the channel signal of the SiL channel to the LS channel, The channel signal of the SiL channel can be reproduced.

씩 나누어 분배할 수 있다.The signal distributor 130 divides the channel signal of the input multi-channel audio signal into two channels of the output multi-channel audio signal closest to the channel of the input multi-

You can divide by division.

TpFc 채널 신호를 분배할 수 있다.For example, in the case of a top forword center (TpFc) channel output to an output device located at the center of a 22: 2 channel, the signal distributor 130 divides the LH channel and the RH channel at the same height

The TpFc channel signal can be distributed.

The channel signal calculation unit 140 may calculate a signal for each channel of the output multi-channel audio signal based on the channel signal allocated to each channel of the output multi-channel audio signal or the divided channel signal.

For example, when converting a 22.2 channel audio signal to a 10.2 channel audio signal, the channel signal calculation unit 140 multiplies a specific constant for each of the upper layer, the middle layer, the bottom layer, and the sub-woofer channel, To adjust the overall sound level.

A process of calculating a signal for each channel by the channel signal calculation unit 140 when converting a 22.2 channel audio signal to a 10.2 channel audio signal will be described in detail with reference to FIG. 4 to FIG.

In another example, when the 10.2 channel audio signal is converted into a channel audio signal of less than 10.2 channels, the channel signal calculator 140 may calculate a specific constant for each of the channels located on the plane, the channels having the height, and the sub- And may adjust the overall sound level of the output multi-channel audio signal.

The process of calculating the signal for each channel by the channel signal calculation unit 140 when converting a 10.2 channel audio signal into an output multi-audio signal using less than 10.2 channels will be described in detail with reference to FIGS. 9 to 12 do.

In the case where the multi-channel audio conversion system according to the embodiment of the present invention converts a 22.2 channel audio signal input thereto into a 10.2 channel audio signal, the channel signal calculator 140 uses the table 1 to calculate a signal for each channel of 10.2 channels Can be calculated.

As shown in Table 1 and FIG. 4, the channel signal calculation unit 140 may calculate a channel number of a 22-channel audio signal 410, such as a FL (Forward Left) channel, a FLc (Forward Left center) channel, and a BtFL Channel audio signal 420 based on the channel signal of the 10.2 channel output multi-channel audio signal 420. [ At this time, the FL channel and the BtFL channel have the same output position as the L channel, and the FLc channel is the channel between the L channel and the C channel.

을 곱한 값에 각각 미들 레이어로 설정된 상수 m을 곱하고, 보텀 레이어인 BtFL 채널의 채널 신호에 보텀 레이어로 설정된 상수 b를 곱한 다음 상기 결과 값들을 더하여 L 채널의 최종 채널 신호를 계산할 수 있다.More specifically, the channel signal calculator 140 calculates the channel signal of the FL channel and the channel signal of the FLc channel,

Multiplied by a constant m set as a middle layer, multiplying a channel signal of a BtFL channel as a bottom layer by a constant b set as a bottom layer, and adding the resultant values to calculate a final channel signal of the L channel.

Since the output position of the R channel is symmetrical with the L channel, the channel signal calculator 140 calculates the FR channel (Forward Right), which is a channel in which the output position is symmetric with respect to the channels used for the L channel, ) Channel, and a BtFR (Bottom Forward Right) channel signal to calculate an R channel channel signal.

As shown in Table 1 and FIG. 5, the channel signal calculation unit 140 may calculate a channel number of a 22-channel audio signal 510 using a Forward Center (FC) channel, an FLc channel, an FRc channel, and a BtFC (Bottom Forward Center) The channel signal of the C channel of the 10.2 channel output multi-channel audio signal 520 can be calculated based on the channel signal of the 10.2 channel output multi-channel audio signal 520. [ At this time, the FC channel and the BtFC channel have the same output position as the C channel, the FLc channel is the channel between the L channel and the C channel, and the FRc channel is the channel between the R channel and the C channel.

을 곱한 값, FRc 채널의 채널 신호에

을 곱한 값 에 각각 미들 레이어로 설정된 상수 m을 곱하고, 보텀 레이어인 BtFC 채널에 보텀 레이어로 설정된 상수 b를 곱한 다음, 상기 결과 값들을 더하여 C 채널의 최종 채널 신호를 계산할 수 있다.Specifically, the channel signal calculation unit 140 calculates the channel signal of the FC channel, the channel signal of the FLc channel,

, The value obtained by multiplying the channel signal of the FRc channel by

Multiplied by a constant m set as a middle layer, multiplies a BtFC channel, which is a bottom layer, by a constant b set as a bottom layer, and adds the resultant values to calculate a final channel signal of the C channel.

As another example, the channel signal calculator 140 may calculate the channel signals of the TpFL (top Forward Left) channel and the TpFC (top Forward center) among the 22.2 channel audio signals 610 as shown in Table 1 and FIG. 6 The channel signal of the LH channel of the 10.2 channel output multi-channel audio signal 620 can be calculated. At this time, the channel signal of the TpFL channel is the same channel as the output channel of the LH channel, and the TpFC channel is the channel between the LH channel and the RH channel.

을 곱한 값에 각각 어퍼 레이어로 설정된 상수 t을 곱한 다음, 상기 결과 값들을 더하여 LH 채널의 최종 채널 신호를 계산할 수 있다.More specifically, the channel signal calculation unit 140 calculates the channel signal of the TpFL channel and the channel signal of the TpFC channel,

Is multiplied by a constant t set in the upper layer, and the resultant values are added to calculate the final channel signal of the LH channel.

Since the output position of the RH channel is symmetrical with the L channel, the channel signal calculation unit 140 calculates the channel used for the LH channel and the TpFR (top forward right) channel in which the output position is horizontally symmetric, Signal may be used to calculate the channel signal of the RH channel.

As another example, the channel signal calculation unit 140 may calculate a 10.2 channel output multi-channel audio signal (FIG. 7) based on the TpSiL channel and the SiL channel signal among the 22.2-channel audio signal 710 as shown in Table 1 and FIG. 720 of the LS channel. At this time, the TpSiL channel and the SiL channel are the same channel as the LS channel.

Specifically, the channel signal calculation unit 140 multiplies the channel signal of the middle layer SiL channel by a constant m set as a middle layer, multiplies the channel signal of the upper layer TpSiL channel by a constant t set as an upper layer, Can be added to calculate the last channel signal of the LS channel.

Since the output position of the RS channel is symmetrical with the LS channel, the channel signal calculation unit 140 uses the TpSiR channel, which is a channel in which the output position is symmetric with respect to the channels used in the LS channel, and the channel signal of the SiR channel The channel signal of the RS channel may be calculated.

As another example, the channel signal calculation unit 140 may calculate a TpBL (TopBackwordLeft) channel, a TpBC (TopBackwordCenter) channel, a BC (Backward Center) channel and a BL The channel signal of the LB channel of the 10.2 channel output multi-channel audio signal 820 can be calculated based on the channel signal of the BackwardLeft channel. At this time, the TpBL channel and the BL channel are the same channel and the output channel is the LB channel, and the TpBC channel and the BC channel are channels between the LB channel and the RB channel.

을 곱한 값에 각각 미들 레이어로 설정된 상수 m을 곱하고, 어퍼 레이어인 TpBL 채널의 채널 신호와 TpBC 채널의 채널 신호에

을 곱한 값에 각각 어퍼 레이어로 설정된 상수 t를 곱한 다음, 상기 결과 값들을 더하여 LB 채널의 최종 채널 신호를 계산할 수 있다.Specifically, the channel signal calculation unit 140 calculates a channel signal of the BL channel and a channel signal of the BC channel,

Is multiplied by a constant m set as a middle layer, and the channel signal of the upper layer TpBL channel and the channel signal of the TpBC channel are multiplied

Multiplied by a constant t set in the upper layer, and adding the resultant values to calculate the final channel signal of the LB channel.

Since the output position of the RB channel is symmetric with that of the L channel, the channel signal calculation unit 140 calculates the TbBR (TopBackwordRight) channel, the TbBC (TopBackwordCenter) channel, the channel used for the LB channel, , A BC (Backward Center) channel, and a BR (Backward Right) channel to calculate a channel signal of an RB channel.

In the case where the multi-channel audio conversion system according to the embodiment of the present invention converts a 10.2 channel audio signal input thereto into a 7.1 channel audio signal, the channel signal calculator 140 calculates a channel signal Can be calculated.

For example, as shown in Table 1 and FIG. 9, the channel signal calculation unit 140 may calculate the L channel of the 7.1 channel audio signal 920 based on the channel signals of the L channel and the LH channel among the 10.2 channel audio signals 910, Can be calculated. At this time, the L channel and the LH channel of the 10.2 channel audio signal 910 are the same channel as the L channel of the 7.1 channel audio signal 920. Also, the channel signal calculation unit 140 sets a constant a to a channel located on a plane, and a constant c to a channel having a height.

Specifically, the channel signal calculation unit 140 multiplies the L channel of the 10.2 channel audio signal 910, which is a channel located on the same plane as the user, by a predetermined constant a, and outputs a predetermined constant c to the LH channel, which is a channel having a height And then adds the resultant values to calculate the final channel signal of the L channel of the 7.1 channel audio signal 920.

Since the output position of the R channel is bilaterally symmetric with the L channel, the channel signal calculation unit 140 calculates the channel R and the RH channel of the 10.2 channel audio signal 910, The channel signal of the R channel of the 7.1 channel audio signal 420 may be calculated using the channel signal of the channel.

As another example, the channel signal calculation unit 140 may calculate the LB of the 7.1 channel audio signal 1020 based on the channel signals of the LB channel and the TC channel of the 10.2 channel audio signal 1010, as shown in Table 1 and FIG. 10, The channel signal of the channel can be calculated. In this case, the LB channel of the 10.2 channel audio signal 920 is equal in output position to the LB channel of the 7.1 channel audio signal 1020, and the TC channel is the channel between the LB channel and the RB channel of the 7.1 channel audio signal 1020 to be.

을 곱한 값에 기 설정된 상수 c를 곱한 다음 상기 결과 값들을 더하여 7.1채널 오디오 신호(420)의 LB 채널의 최종 채널 신호를 계산할 수 있다.More specifically, the channel signal calculation unit 140 multiplies the LB channel of the 10.2 channel audio signal 910, which is a channel located on the same plane as the user, by a predetermined constant a, The channel signal of the TC channel

Channel audio signal 420. The final channel signal of the LB channel of the 7.1 channel audio signal 420 may be calculated by multiplying the result of the multiplication by the predetermined constant c.

Since the output position of the RB channel is bilaterally symmetric with the LB channel, the channel signal calculator 140 calculates the RB channel of the 10.2 channel audio signal 910, which is a channel in which the output positions are horizontally symmetric with the channels used in the LB channel, The channel signal of the RB channel of the 7.1 channel audio signal 420 may be calculated using the channel signal of the channel.

In the case where the multi-channel audio conversion system according to the embodiment of the present invention converts a 10.2 channel audio signal input thereto into a 5.1 channel audio signal, the channel signal calculation unit 140 calculates a channel- Can be calculated.

For example, the channel signal calculator 140 may calculate the 7.1 channel audio signal 1120 based on the channel signals of the LS channel, the LB channel, and the TC channel of the 10.2 channel audio signal 1110, as shown in Table 1 and FIG. Lt; RTI ID = 0.0 > LS < / RTI > At this time, the TC channel of the 10.2 channel audio signal 1110 is a channel located between the LS channel and the RS channel of the 7.1 channel audio signal 920.

을 곱한 값에 기 설정된 상수 c를 곱한 다음 상기 결과 값들을 더하여 7.1채널 오디오 신호(420)의 LS 채널의 최종 채널 신호를 계산할 수 있다. 이때, 10.2채널의 LS채널은 5.1채널의 L채널과 LS채널의 중간에 위치하고 있으나, 10.2채널의 LS채널은 후면으로 판단되는 사이드 채널이므로 채널 신호 계산부(140)는 10.2채널의 LS채널를 L채널에 분배하지 않고, 5.1 채널의 후면에 위치한 LS채널로만 인가할 수 있다.Specifically, the channel signal calculation unit 140 multiplies the LS channel of the 10.2 channel audio signal 910, which is a channel located on the same plane as the user, with a constant a set in the LB channel, To the channel signal of the TC channel, which is the channel between

Channel audio signal 420. The final channel signal of the LS channel of the 7.1-channel audio signal 420 may be calculated by multiplying the result of multiplication by the predetermined constant c. In this case, the 10.2 channel LS channel is located between the 5.1 channel L channel and the LS channel, but the 10.2 channel LS channel is the side channel judged as the back side. Therefore, the channel signal calculator 140 calculates the 10.2 channel LS channel as the L channel And can be applied only to the LS channel located on the rear side of the 5.1 channel.

Since the output position of the RS channel is symmetric with the LS channel, the channel signal calculation unit 140 calculates the channel used for the LB channel and the RS channel of the 10.2 channel audio signal 1110, The channel signal of the RS channel of the 7.1 channel audio signal 420 may be calculated using the channel signal of the channel and the TC channel.

In the case where the multi-channel audio conversion system according to the embodiment of the present invention converts 10.2 channel audio signals input thereto into 2.0 channel audio signals, the channel signal calculator 140 calculates the channel- Can be calculated.

As shown in Table 1 and FIG. 12, the channel signal calculation unit 140 calculates channel signals of the L channel, the C channel, the LH channel, the LS channel, the LB channel, and the TC channel of the 10.2 channel audio signal 1110 The channel signal calculator 140 may calculate the channel signal of the L channel of the 7.1 channel audio signal 1120 based on the amount of the output of the front channel, It is possible to calculate the channel signal so that the size of the output mapped to the input signal is small.

13 is a flowchart illustrating a multi-channel audio conversion method according to an embodiment of the present invention.

In step S1310, the output position confirmation unit 110 may check the output position of the output multi-channel audio signal and the input multi-channel audio signal,

In step S1320, the output position confirmation unit 110 can check whether the output multi-channel audio signal and the input multi-channel audio signal have the same channel-based output position. In this case, a channel of an input multi-audio signal having the same output position per channel is referred to as an input channel, and a channel of an output multi-audio signal having the same output position per channel may be referred to as an output channel. If the output multi-channel audio signal and the input multi-channel audio signal do not have the same channel-by-channel output position, in step S1330, the signal assigning unit 120 assigns the channel signal of the input channel to the channel of the same position . That is, when the output multi-channel audio signal and the input multi-channel audio signal include the input channel and the output channel, the signal allocation unit 120 may assign the channel signal of the input channel to the output channel in step S1330. On the contrary, if there is no channel having the same output position for each channel among the output multi-channel audio signal and the input multi-channel audio signal, in step S1340, the signal distributor 130 outputs the output closest to the channel of the input multi- You can see two channels of multi-channel audio signals.

In step S1350, the signal distributor 130 may distribute the channel signal of the input multi-channel audio signal to the adjacent channels identified in step S1340.

In step S1360, the channel signal calculation unit 140 may calculate an output for each channel of the output audio signal based on the channel signal allocated in step S1330 or on the channel signal distributed in step S1350.

Specifically, the channel signal calculation unit 140 can calculate the channel-by-channel output of the output audio signal using Tables 1 to 4.

The present invention can increase the compatibility of a 10.2 channel audio signal by converting a 10.2 channel audio signal, which can provide a sound field similar to 22.2 channels, to another multi-channel audio signal using less than 22.2 channels.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

110: Channel position confirmation unit
120: Signal allocation unit
130: Signal distributor
140: channel signal calculation unit

Claims (12)

Checking the output position of each of the output multi-channel audio signal and the input multi-channel audio signal,
Determining a channel-specific signal of the output multi-channel audio signal;
Lt; / RTI >
Wherein one of the input multi-channel audio signal or the output multi-channel audio signal corresponds to a speaker configuration of a 10.2 channel audio signal,
The 10.2 channel audio signal is a signal
A multi-channel audio conversion method, which is provided through a speaker corresponding to an upper layer, a speaker corresponding to a middle layer, and a speaker corresponding to a bottom layer with a user as a center. The method according to claim 1,
The step of determining the channel-
Wherein the total sound level of the output multi-channel audio signal is adjusted by multiplying each of the upper layer, the middle layer, the bottom layer, and the sub-woofer channel by a specific constant when the input multi-channel audio signal is a 22.2- Multi-channel audio conversion method. The method according to claim 1,
The step of determining the channel-
When the input multi-channel audio signal is a 10.2-channel audio signal, the overall sound level of the output multi-channel audio signal is adjusted by multiplying the channels located on the plane, the channels having the height, and the sub- Channel audio conversion method. The method according to claim 1,
The step of determining the channel-
Wherein the channel signals of the input multi-channel audio signals are distributed to the two channels of the output multi-channel audio signals closest to the channels of the input multi-channel audio signals. The method according to claim 1,
The upper layer includes:
An LH, a RH (Left Height / Right Height) channel arranged between 30 ° and 45 °, and a TC (Top Center) channel on the upper side of the user,
Wherein the middle layer comprises:
An L / R (Left / Right) channel in which an output position is disposed at a center (C) channel in front of the user and a front ± 30 ° position in front of the user, an LS / A Left Side / Right Side (RS) channel, and an LB / RB (Left Back / Right Back) channel in which an output position is located at a 150 [deg.
Wherein the bottom layer comprises two LFE channels. The method according to claim 1,
The step of determining the channel-
When the input multi-channel audio signal is 22.2 channels, a forward left channel (FL) channel, a forward left channel (FLc) channel, a bottom right channel (BtFL) channel, a forward right channel (FR) channel, And a top forword center (TpFR) channel, a top forword center (TpFL) channel, a bottom forward center (BtFC) channel, ) Channel, TpSiL channel, SiL channel, TpSiR channel, SiR channel, TpBL (TopBackwardLeft) channel, TpBC (TopBackwordCenter) channel, BC (BackwordCenter) channel and BL (BackwordLeft) channel, TpBR (TopBackwordRight) channel, BR Channel audio signal based on the output of the multi-channel audio converter. In a multi-channel audio conversion system,
The system includes a processor,
The processor comprising:
Output multi-channel audio signal and input multi-channel audio signal, determines the channel-by-channel signal of the output multi-channel audio signal,
Lt; / RTI >
Wherein one of the input multi-channel audio signal or the output multi-channel audio signal corresponds to a speaker configuration of a 10.2 channel audio signal,
Wherein the 10.2 channel audio signal comprises:
A multi-channel audio conversion system provided through a speaker corresponding to an upper layer, a speaker corresponding to a middle layer, and a speaker corresponding to a bottom layer, centering on a user. 8. The method of claim 7,
The processor comprising:
Wherein the total sound level of the output multi-channel audio signal is adjusted by multiplying each of the upper layer, the middle layer, the bottom layer, and the sub-woofer channel by a specific constant when the input multi-channel audio signal is a 22.2- Multichannel audio conversion system. 8. The method of claim 7,
The processor comprising:
When the input multi-channel audio signal is a 10.2-channel audio signal, the overall sound level of the output multi-channel audio signal is adjusted by multiplying the channels located on the plane, the channels having the height, and the sub- Channel audio conversion system. 8. The method of claim 7,
The processor comprising:
Channel audio signals, and distributes the channel signals of the input multi-channel audio signals to the two channels of the output multi-channel audio signals closest to the channels of the input multi-channel audio signals. 8. The method of claim 7,
The upper layer includes:
An LH, a RH (Left Height / Right Height) channel arranged between 30 ° and 45 °, and a TC (Top Center) channel on the upper side of the user,
Wherein the middle layer comprises:
An L / R (Left / Right) channel in which an output position is disposed at a center (C) channel in front of the user and a front ± 30 ° position in front of the user, an LS / A Left Side / Right Side (RS) channel, and an LB / RB (Left Back / Right Back) channel in which an output position is located at a 150 [deg.
Wherein the bottom layer comprises two LFE channels. 8. The method of claim 7,
The processor comprising:
When the input multi-channel audio signal is 22.2 channels, a forward left channel (FL) channel, a forward left channel (FLc) channel, a bottom right channel (BtFL) channel, a forward right channel (FR) channel, And a top forword center (TpFR) channel, a top forword center (TpFL) channel, a bottom forward center (BtFC) channel, ) Channel, TpSiL channel, SiL channel, TpSiR channel, SiR channel, TpBL (TopBackwardLeft) channel, TpBC (TopBackwordCenter) channel, BC (BackwordCenter) channel and BL (BackwordLeft) channel, TpBR (TopBackwordRight) channel, BR Channel audio signal based on the 10-channel output multi-channel audio signal.

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