一文搞懂多声道

wj102901 · 发表于 20-2-25 23:40

家庭音响5.1、7.1音响系统图

各个声道的定义
名称解释
FL front left
FR front right
FC front center
LFE low frequency
BL back left
BR back right
FLC front left-of-center
FRC front right-of-center
BC back center
SL side left
SR side right
TC top center
TFL top front left
TFC top front center
TFR top front right
TBL top back left
TBC top back center
TBR top back right
DL downmix left
DR downmix right
WL wide left
WR wide right
SDL surround direct left
SDR surround direct right
LFE2 low frequency 2

音响系统布置（声道分布）定义
名称声道分布情况
mono FC
stereo FL+FR
2.1 FL+FR+LFE
3.0 FL+FR+FC
3.0(back) FL+FR+BC
4.0 FL+FR+FC+BC
quad FL+FR+BL+BR
quad(side) FL+FR+SL+SR
3.1 FL+FR+FC+LFE
5.0 FL+FR+FC+BL+BR
5.0(side) FL+FR+FC+SL+SR
4.1 FL+FR+FC+LFE+BC
5.1 FL+FR+FC+LFE+BL+BR
5.1(side) FL+FR+FC+LFE+SL+SR
6.0 FL+FR+FC+BC+SL+SR
6.0(front) FL+FR+FLC+FRC+SL+SR
hexagonal FL+FR+FC+BL+BR+BC
6.1 FL+FR+FC+LFE+BC+SL+SR
6.1(back) FL+FR+FC+LFE+BL+BR+BC
6.1(front) FL+FR+LFE+FLC+FRC+SL+SR
7.0 FL+FR+FC+BL+BR+SL+SR
7.0(front) FL+FR+FC+FLC+FRC+SL+SR
7.1 FL+FR+FC+LFE+BL+BR+SL+SR
7.1(wide) FL+FR+FC+LFE+BL+BR+FLC+FRC
7.1(wide-side) FL+FR+FC+LFE+FLC+FRC+SL+SR
octagonal FL+FR+FC+BL+BR+BC+SL+SR
hexadecagonal FL+FR+FC+BL+BR+BC+SL+SR+TFL+TFC+TFR+TBL+TBC+TBR+WL+WR
downmix DL+DR

多声道（大于2.0的，如4.0、5.0、5.1、6.1、7.1等）转2.0立体声处理方法
1、Channels＝2.1，处理为：FL=FL+0.5*LFE|FR=FR+0.5*LFE
2、Channels＝3.0 and pan=FL+FR+FC，处理为：FL=0.5*FC+FL|FR=0.5*FC+FR
3、Channels＝3.0 and pan=FL+FR+BC，处理为：FL=0.5*BC+FL|FR=0.5*BC+FR
4、Channels＝4.0 and pan=FL+FR+FC+BC，处理为：FL=FL+0.5*FC+0.5*BC|FR=FR+0.5*FC+0.5*BC
5、Channels＝4.0 and pan=FL+FR+BL+BR，处理为：FL=FL+BL|FR=FR+BR
6、Channels＝4.0 and pan=FL+FR+SL+SR，处理为：FL=FL+SL|FR=FR+SR
7、Channels＝3.1，处理为：FL=0.5*FC+FL+0.5*LFE|FR=0.5*FC+FR+0.5*LFE
8、Channels＝5.0 and pan=FL+FR+FC+BL+BR，处理为：FL=0.5*FC+FL+BL|FR=0.5*FC+FR+BR
9、Channels＝5.0 and pan=FL+FR+FC+SL+SR，处理为：FL=0.5*FC+FL+SL|FR=0.5*FC+FR+SR
10、Channels＝4.1'FL+FR+FC+LFE+BC，处理为：FL=FL+0.5*FC+0.5*LFE+0.5*BC|FR=FR+0.5*FC+0.5*LFE+0.5*BC
11、Channels＝5.1 and pan=FL+FR+FC+LFE+BL+BR，处理为：FL=0.5*FC+FL+BL+0.5*LFE|FR=0.5*FC+FR+BR+0.5*LFE
12、Channels＝5.1 and pan=FL+FR+FC+LFE+SL+SR，处理为：FL=0.5*FC+FL+SL+0.5*LFE|FR=0.5*FC+FR+SR+0.5*LFE
13、Channels＝6.0 and pan=FL+FR+FC+BC+SL+SR，处理为：FL=0.5*FC+0.5*BC+FL+SL|FR=0.5*FC+0.5*BC+FR+SR
14、Channels＝6.0 and pan=FL+FR+FLC+FRC+SL+SR，处理为：FL=FLC+FL+SL|FR=FRC+FR+SR
15、Channels＝6.0 and pan=FL+FR+FC+BL+BR+BC，处理为：FL=0.5*FC+0.5*BC+FL+BL|FR=0.5*FC+0.5*BC+FR+BR
16、Channels＝6.1 and pan=FL+FR+FC+LFE+BC+SL+SR，处理为：FL=0.5*FC+0.5*BC+FL+SL+0.5*LFE|FR=0.5*FC+0.5*BC+FR+SR+0.5*LFE
17、Channels＝6.1 and pan=FL+FR+FC+LFE+BL+BR+BC，处理为：FL=0.5*FC+0.5*BC+FL+BL+0.5*LFE|FR=0.5*FC+0.5*BC+FR+BR+0.5*LFE
18、Channels＝6.1 and pan=FL+FR+LFE+FLC+FRC+SL+SR，处理为：FL=FlC+FL+SL+0.5*LFE|FR=FRC+FR+SR+0.5*LFE
19、Channels＝7.0 and pan=FL+FR+FC+BL+BR+SL+SR，处理为：FL=FL+0.5*FC+BL+SL|FR=FR+0.5*FC+BR+SR
20、Channels＝7.0 and pan=FL+FR+FC+FLC+FRC+SL+SR，处理为：FL=FL+0.5*FC+FlC+SL|FR=FR+0.5*FC+FRC+SR
21、Channels＝7.1 and pan=FL+FR+FC+LFE+BL+BR+SL+SR，处理为：FL=FL+0.5*FC+BL+SL+0.5*LFE|FR=FR+0.5*FC+BR+SR+0.5*LFE
22、Channels＝7.1 and pan=FL+FR+FC+LFE+BL+BR+FLC+FRC，处理为：FL=FL+0.5*FC+BL+FLC+0.5*LFE|FR=FR+0.5*FC+BR+FRC+0.5*LFE
23、Channels＝7.1 and pan=FL+FR+FC+LFE+FLC+FRC+SL+SR，处理为：FL=FL+0.5*FC+SL+FLC+0.5*LFE|FR=FR+0.5*FC+SR+FRC+0.5*LFE
24、Channels＝8.0，处理为：FL=FL+0.5*FC+0.5*BC+BL+SL|FR=FR+0.5*FC+0.5*BC+BR+SR
25、Channels＞8，处理为：混合为2.0立体声。

大于5.0的（如6.1、7.1）转5.1处理方法
1、Channels＝6.0 and pan＝FL+FR+FC+BC+SL+SR，处理为：FL=FL|FR=FR|FC=FC+BC|BL=SL|BR=SR
2、Channels＝6.0 and pan＝FL+FR+FLC+FRC+SL+SR，处理为：FL=FL|FR=FR|FC=FLC+FRC|BL=SL|BR=SR
3、Channels＝6.0 and pan＝FL+FR+FC+BL+BR+BC，处理为：FL=FL|FR=FR|FC=FC+BC|BL=BL|BR=BR
4、Channels＝6.1 and pan＝FL+FR+FC+LFE+BC+SL+SR，处理为：FL=FL|FR=FR|FC=FC+BC|BL=SL|BR=SR|LFE=LFE
5、Channels＝6.1 and pan＝FL+FR+FC+LFE+BL+BR+BC，处理为：FL=FL|FR=FR|FC=FC+BC|BL=BL|BR=BR|LFE=LFE
6、Channels＝6.1 and pan＝FL+FR+LFE+FLC+FRC+SL+SR，处理为：FL=FL|FR=FR|FC=FLC+FRC|BL=SL|BR=SR|LFE=LFE
7、Channels＝7.0 and pan＝FL+FR+FC+BL+BR+SL+SR，处理为：FL=FL|FR=FR|FC=FC|BL=BL+SL|BR=BR+SR
8、Channels＝7.0 and pan＝FL+FR+FC+FLC+FRC+SL+SR，处理为：FL=FL|FR=FR|FC=FC+FLC+FRC|BL=SL|BR=SR
9、Channels＝7.1 and pan＝FL+FR+FC+LFE+BL+BR+SL+SR，处理为：FL=FL|FR=FR|FC=FC|BL=SL+BL|BR=SR+BR|LFE=LFE
10、Channels＝7.1 and pan＝FL+FR+FC+LFE+BL+BR+FLC+FRC，处理为：FL=FL|FR=FR|FC=FC+FLC+FRC|BL=BL|BR=BR|LFE=LFE
11、Channels＝7.1 and pan＝FL+FR+FC+LFE+FLC+FRC+SL+SR，处理为：FL=FL|FR=FR|FC=FC+FLC+FRC|BL=SL|BR=SR|LFE=LFE
12、Channels＝8.0，处理为：FL=FL|FR=FR|FC=FC+BC|BL=SL+BL|BR=SR+BR
13、Channels＞8，处理为：混合为5.0（无低音时）或5.1（有低音时）环绕声。