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This articles shows how automatic matrix mixing routes channels.
 
This articles shows how automatic matrix mixing routes channels.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
== Introduction ==
 
== Introduction ==
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* Normalization
 
* Normalization
 
* Input and output gains
 
* Input and output gains
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
=== Notations ===
 
=== Notations ===
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* <tex>B_R</tex> - back right
 
* <tex>B_R</tex> - back right
 
* <tex>B_C</tex> - back center
 
* <tex>B_C</tex> - back center
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
== Channel routing ==
 
== Channel routing ==
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[[File:Mixing routes.png|thumb|right|300px|Mixing routes]]
 
[[File:Mixing routes.png|thumb|right|300px|Mixing routes]]
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
Here you can see the whole routing picture.
 
Here you can see the whole routing picture.
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Voice and surround levels are always applied to appropriate channels. When mixing, levels are applied ''before'' mixing, acting as mixing levels.
 
Voice and surround levels are always applied to appropriate channels. When mixing, levels are applied ''before'' mixing, acting as mixing levels.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
=== Center channel ===
 
=== Center channel ===
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where <tex>g_c</tex> is the {{opt|Voice level}}.
 
where <tex>g_c</tex> is the {{opt|Voice level}}.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
=== Main channels ===
 
=== Main channels ===
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[[File:Mixing-Side of center.png|thumb|right|300px|Mixing of side of center]]
 
[[File:Mixing-Side of center.png|thumb|right|300px|Mixing of side of center]]
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
When 3 front channels present (1st route), each of side of center channels goes to the center and a main channel. This creates 'virtual' side of center channels placed in between of main and center channels. To preserve loudness -3db gain is applied:
 
When 3 front channels present (1st route), each of side of center channels goes to the center and a main channel. This creates 'virtual' side of center channels placed in between of main and center channels. To preserve loudness -3db gain is applied:
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In mono output mode (3rd route), everything goes to the center.
 
In mono output mode (3rd route), everything goes to the center.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
=== Side channels ===
 
=== Side channels ===
  
 
[[File:Mixing-Side.png|thumb|right|300px|Mixing of side channels]]
 
[[File:Mixing-Side.png|thumb|right|300px|Mixing of side channels]]
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
Routes for side channels:
 
Routes for side channels:
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{{opt|Surround level}} is always applied to all surround channels.
 
{{opt|Surround level}} is always applied to all surround channels.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
=== Back channels ===
 
=== Back channels ===
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{{opt|Surround level}} is always applied to all surround channels.
 
{{opt|Surround level}} is always applied to all surround channels.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
=== Back center ===
 
=== Back center ===
  
 
[[File:Mixing-Back center.png|thumb|right|300px|Mixing of back center]]
 
[[File:Mixing-Back center.png|thumb|right|300px|Mixing of back center]]
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
Routing of the back cemter is very simple. It goes to either:
 
Routing of the back cemter is very simple. It goes to either:
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In most cases one channel goes into two, so -3db gain is applied to preserve the resulting loudness (excluding mono mixing mode). Also, {{opt|Surround level}} is always applied to all surround channels.
 
In most cases one channel goes into two, so -3db gain is applied to preserve the resulting loudness (excluding mono mixing mode). Also, {{opt|Surround level}} is always applied to all surround channels.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
=== Subwoofer ===
 
=== Subwoofer ===
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This means that the sound coming from LFE level should be produced 10dB louder than sound from other channels. But by applying +10dB gain we loose 10db of dynamic range. It is not too bad, but the more correct way is to tune the subwofer itself. Many audio systems have an independent volume for the subwoofer, so you may set it to +10dB and leave {{opt|LFE level}} at zero level.
 
This means that the sound coming from LFE level should be produced 10dB louder than sound from other channels. But by applying +10dB gain we loose 10db of dynamic range. It is not too bad, but the more correct way is to tune the subwofer itself. Many audio systems have an independent volume for the subwoofer, so you may set it to +10dB and leave {{opt|LFE level}} at zero level.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
== Voice control ==
 
== Voice control ==
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Note, that decreasing of {{opt|Voice level}} may lead to distorted sound because audio codec (especially at low bitrates) may encode the channel difference with much lower quality.
 
Note, that decreasing of {{opt|Voice level}} may lead to distorted sound because audio codec (especially at low bitrates) may encode the channel difference with much lower quality.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
== Expand stereo ==
 
== Expand stereo ==
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Note, that sometimes surround may receive distorted sound, because audio codec (especially at low bitrates) may encode the channel difference with much lower quality.
 
Note, that sometimes surround may receive distorted sound, because audio codec (especially at low bitrates) may encode the channel difference with much lower quality.
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
== Normalization ==
 
== Normalization ==
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
== Per-channel gains ==
 
== Per-channel gains ==
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 
 
  
 
== See also ==
 
== See also ==
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[[Category:Todo]]
 
[[Category:Todo]]
 
 
'''Source(s):'''  [http://www.downloadranking.com  Mixing]
 

Latest revision as of 14:23, 8 February 2014