|
Surround format |
Number of channels |
Types of channels |
Type of media with which the format may be used |
|
Dolby® Pro Logic® |
4 |
-
2 discrete, full-bandwidth channels (front left and right)
-
1 matrixed, full-bandwidth channel (center)
-
1 matrixed, limited-bandwidth channel (surround left and right)
|
-
stereo and Dolby Surround-encoded VHS movies and broadcast TV programs
-
can be downconverted from any Dolby Digital source
|
|
Dolby Pro Logic II |
5.1 |
-
2 discrete, full-bandwidth channels (front left and right)
-
3 matrixed, full-bandwidth channels (center, surround left and right)
-
1 subwoofer channel via Pro Logic II's bass management
|
-
stereo and Dolby Surround-encoded VHS movies and broadcast TV programs
-
stereo music
-
some video games
|
|
Dolby Digital |
up to 5.1 |
-
5 discrete, full-bandwidth channels (front left and right, center, surround left and right)
-
1 discrete LFE channel (subwoofer)
|
-
all DVDs
-
some broadcast HDTV
-
some satellite and cable TV
-
some video games
|
|
DTS® |
5.1 |
-
5 discrete, full-bandwidth channels (front left and right, center, surround left and right)
-
1 discrete LFE channel (subwoofer)
|
-
some DVDs are DTS-encoded
-
some CDs are DTS-encoded
|
|
DTS Neo:6 |
up to 6.1 |
-
2 discrete, full-bandwidth channels (front left and right)
-
3 or 4 matrixed, full-bandwidth channels (center, surround left and right, and back surround)
-
1 subwoofer channel via DTS Neo:6's bass management
|
-
most audio sources connected to a Neo:6-capable receiver
|
|
Dolby Pro Logic IIx |
up to 7.1 |
-
2 discrete, full-bandwidth channels (front left and right)
-
5 matrixed, full-bandwidth channels (center, surround left and right, and back right and left surrounds)
-
1 subwoofer channel via Pro Logic IIx's bass management
|
-
most audio sources connected to a Pro Logic IIx-capable receiver
|
|
Dolby Pro Logic IIz |
up to 9.1 |
-
2-7 discrete, full-bandwidth channels, depending on audio source (front left and right, center, surround left and right, and back right and left surrounds)
-
2-7 matrixed, full-bandwidth channels, depending on audio source (front right height, front left height, center, surround left and right, and back right and left surrounds)
-
1 subwoofer channel (discrete, or via Pro Logic IIx's bass management, depending on audio source)
|
-
most audio sources connected to a Pro Logic IIz-capable receiver
|
|
Dolby Digital EX |
6.1 |
-
5 discrete, full-bandwidth channels (front left and right, center, surround left and right)
-
1 matrixed, full-bandwidth channel (back surround)
-
1 discrete LFE channel (subwoofer)
|
-
some DVDs are Dolby Digital EX-encoded
-
regular Dolby Digital 5.1 DVDs can also be used with a Dolby Digital EX decoder
|
|
THX Surround EX™ |
6.1 |
-
5 discrete, full-bandwidth channels (front left and right, center, surround left and right)
-
1 matrixed, full-bandwidth channel (back surround)
-
1 discrete LFE channel (subwoofer)
|
-
can decode any Dolby Digital or Dolby Digital EX source
-
can be used to enhance Pro Logic, Pro Logic II, DTS, or DTS-ES decoding
|
|
DTS-ES™ |
6.1 |
-
6 discrete, full-bandwidth channels (front left and right, center, surround left and right, and back surround)
-
1 discrete LFE channel (subwoofer)
|
-
some DVDs are DTS-ES-encoded
-
regular DTS 5.1 DVDs can also be used with a DTS-ES decoder
|
|
Dolby Digital Plus |
7.1 |
-
7 discrete, full-bandwidth channels (front left and right, center, surround left and right, and back left and right surround)
-
1 discrete LFE channel (subwoofer)
|
-
some Blu-ray discs are encoded with Dolby Digital Plus
-
can be downconverted for playback on a 5.1-channel system
|
|
Dolby TrueHD (lossless) |
7.1 |
-
7 discrete, full-bandwidth channels (front left and right, center, surround left and right, and back left and right surround)
-
1 discrete LFE channel (subwoofer)
|
-
some Blu-ray discs are encoded with Dolby TrueHD
-
can be downconverted for playback on a 5.1-channel system
-
as a lossless format, offers sound that's "bit-for-bit" identical to the original recording for more detailed, accurate surround sound
|
|
DTS-HD™ |
7.1 |
-
7 discrete, full-bandwidth channels (front left and right, center, surround left and right, and back left and right surround)
-
1 discrete LFE channel (subwoofer)
|
-
some Blu-ray discs are encoded with DTS-HD
-
can be downconverted for playback on a 5.1-channel system
|
|
DTS-HD Master Audio (lossless) |
7.1 |
-
7 discrete, full-bandwidth channels (front left and right, center, surround left and right, and back left and right surround)
-
1 discrete LFE channel (subwoofer)
|
-
some Blu-ray discs are encoded with DTS-HD Master Audio
-
can be downconverted for playback on a 5.1-channel system
-
as a lossless format, offers sound that's "bit-for-bit" identical to the original recording for more detailed, accurate surround sound
|
|
Dolby Atmos® |
5.1.2 and up |
-
5 discrete, full-bandwidth channels (front left and right, center, surround left and right, and back left and right surround)
-
1 discrete LFE channel (subwoofer)
-
2 in-ceiling speakers or Dolby enabled upward firing speakers that reflect sound off the ceiling
|
-
some Blu-ray discs are encoded with Dolby Atmos soundtracks
-
creates a high, deep soundstage with a more "3D" sound than conventional surround setups
-
scalable to accomodate different setups
-
Dolby recommends a 7.2.4 system for the best experience
|
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