• Dolby Digital Live Pack Download
• Creative Dolby Digital Live Pack
• Sound Blaster Dolby Digital Live Pack
• Dolby Digital Live Download

Using Dolby Home Theater for surround/ multi-channel sound ® Your Acer notebook comes with the Dolby Home Theater audio enhancement ® ® ® ® featuring Dolby PRO LOGIC II, Dolby Digital Live, Dolby Headphone, Dolby Virtual Speaker technologies to give you high-quality digital surround sound for enjoying movies, games and music in a realistic. Use Dolby Atmos Surround Sound on Windows 10 #3 In the above step of you choose the “ With my Headphones ” then the Windows will prompt to check for the system audio hardware spatial requirements. * Dolby Digital Live™ oh, thanks dude, it would seem that the hardware does indeed do encoding.its listed at the bottom of the dolby functions.a few down from master studio, thanks for your help Long Service. Dolby Digital Live works inside your PC or game console while you play, encoding the 5.1-channel audio in the game's audio engine into a Dolby Digital output bitstream. This makes the audio compatible with all Dolby Digital 5.1 playback systems, including A/V receivers, home-theater-in-a-box (HTiB) systems, and integrated 5.1 speaker systems. However Optical can carry Dolby Digital all the way up to Plus which can do Dolby Atmos. Keep in mind Dolby Atmos at home and Dolby Atmos in the movie theater are distinctly different. Install the Media Feature Pack to Enable Dolby Digital Live/DTS Interactive with Win 10 CU. Sometimes, Windows 10 Dolby Digital Live or DTS connect concern after Creators Update can be simply fixed by installing the latest Media Feature Pack.

Supports any model of the following Sound Blaster cards (based on Emu10kx DSP):
- Audigy
- Audigy 2
- Audigy 2 ZS
- Audigy 4
- Audigy 5/RX
For Audigy SE/LS/Value and Live! 24-bit cards, click here for a compatible version.
Operating systems supported:
- 32-bit and 64-bit editions of Windows 10 / 8.1 / 8 / 7 SP1 / Vista SP2 / XP SP3
Included in the pack:
- Audigy series driver 3.01.0046 (Windows Vista or later) (**)
- Audigy series driver 2.09.0016 (Windows XP)
- ALchemy 1.45.12
- Audio Console 1.41.02
- DDL License Activation 1.00.04 (*)
- Dolby Digital Live Pack 3.03.08 (*)
- EAX Console 3.00.61 (Windows Vista or later)
- EAX Console 3.00.59 (Windows XP only)
- Feature Mode Selection Utility 2.10.07
- Graphic Equalizer 2.10.02
- MediaSource DVD-Audio Player 2.00.78 (***)
- On Screen Display 2.20.03 (Windows XP only)
- Remote Control System 5.00.35
- SB Audigy Control Panel 1.00.17
- SoundFont Bank Manager 3.21.02
- Speaker Calibrator 1.60.14 (Windows XP only)
- Speaker Settings 2.10.05 (Windows Vista or later)
- Speaker Settings 2.10.04 (Windows XP only)
- Surround Mixer 4.00.76 (Windows XP only)
- THX Setup Console 2.20.08 (Windows XP only)

(*) Purchase and activation required, more info at http://buy.soundblaster.com.
(**) - For Audigy 5/RX (SB1550) and Audigy 4 Series II (SB0612) this driver also supports Windows XP.
(***) - Requires Audigy 2, Audigy 2 ZS ou Audigy 4

Fixes and improvements:
- 6.2: Updated driver to latest version.

- 6.2: Updated shared components.


- 6.1: Unless Creative releases a driver update, this is the final version. I'll release an updated Installation Disc, before you ask.

- 6.1: Fixed EAX Console crash on Windows 8 or later. Speaker Settings and Graphic Equalizer still crash on exit and couldn't fix them, unfortunately.

- 6.1: Fixed CMSS2 not available in Audio Console / Audigy Control Panel with Audigy 5/RX.

- 6.1: Fixed RCLDMWND: DLLML.exe application error.

- 6.1: Updated shared components.

- 6.0: Based on official Audigy 5/RX Windows 10 driver

- 6.0: Fixed Graphic Equalizer sometimes does not load.

- 6.0: Added support for EEPROM corrupted Audigy '1' cards. Feedback is appreciated.
- 6.0: Updated KillDrvX to support changes in Windows 10, now warns if Audigy driver service is still running.

- Fixed Audigy 5/RX support.

- Readded 'EndPoint Utility' to enable the use of other digital devices to output Dolby Digital Live encoded audio.

- Fixed driver installation issues on Windows 10.

- Fixed Audigy '1' or Audigy 2 mute issue.

- Audigy RX is now fully supported.

- EAX Console now works on Windows Vista or later.

- Karaoke effects now work properly on Windows Vista or later, just use EAX Console to enable them. Effects will only be applied to the Microphone input.

- Sound Blaster Audigy Control Panel now available for all cards, but it lacks many settings available on Audio Console, so use the later.

- Added instructions on how to install the Gameport.

- Fixed missing speaker settings strings on Windows XP when DDL is enabled.

- Improved driver installation, less confirmation prompts.

- Improved setup procedure and scripts.

- Removed Encode switcher for now, only DDL is available.

- Installation now customizable, select what you want to install.

- New integrated Post Driver Install Helper tweaks the driver without tampering certificate.

- CMSS2 is now available.

- OpenAL 64-bit support.

- Dolby Digital Live now works on Windows 8.1 (update 1). Creative Audio Service was not being installed on that OS.

- Special FX, Advanced EQ, Studio and Custom presets now available on Windows Vista or later.

- Audio Console does not crash anymore on non-English localized installs. Localized resources for Online Karaoke tab were missing; added mostly localized Korean and Chinese (Traditional) resources.

- Online Karaoke page is available for all Audigy cards on Windows Vista or later; this is NOT a new feature, but an easier way to configure the Microphone.

- EAX Settings for Windows Vista or later includes EAX Studio, a fancy version of EAX Control Panel, no changes in functionality, except the Test button now works.

- Added fully localized Korean and Chinese (Traditional) resources for EAX Studio, which were missing.
Undocumentend fixes by Creative (not listed in the release notes):
- Headphone mode now sticks and does not revert automatically to Speakers mode on Windows Vista or later.
- Special FX, Advanced EQ and Studio presets were not working on Windows Vista or later.
IMPORTANT: Driver uninstall on Windows Vista or later
The included driver for Windows Vista or later has a bug that causes a stop (blue screen) error when unloaded by disabling the Audigy or uninstalling the driver.
To workaround this issue, run the KillDrv.exe utility included and restart when asked to do so. Proceed normally and uninstall all the software or only the driver.
If you have previously installed the Audigy 5/RX driver, you MUST run this utility.
As the KillDrvX verify the driver version installed, running it won't do any harm, even if the driver version is not affected.
HOW TO INSTALL THE GAMEPORT DRIVER
You can find a GameportReadMe.htm file in the folder where you unpacked the Support Pack.
Just follow the steps shown in the screenshots.
WINDOWS 8 OR LATER DOES NOT SAVE SETTINGS
Configure all settings and shutdown, hibernate or put your computer to sleep so that your settings will be saved.
This does not work if you disable Fast startup permanently or temporarily (by holding the Shift key while shutting down) or if you disable Hybrid Sleep.
OpenAL 2D benchmark in RightMark 3DSound crashes your system
The included driver for Windows Vista or later has a bug that crashes your system if you run the OpenAL 2D benchmark using 63 buffers.
No problem With 62 or fewer buffers.
OpenAL 3D and OpenAL 3D + EAX benchmarks are not affected.
Details: DRIVER_IRQL_NOT_LESS_OR_EQUAL (0x000000D1) - ctoss2k.sys
There is no DirectSound hardware acceleration on Windows XP 64-bit (x64) with 4GB RAM or more
The Audigy driver does not support 64-bit addressing, disabling the DirectSound hardware acceleration and causing multichannel sound to be played only in the stereo channels (front left/right).
Workarounds:
- install the 32-bit (x86) version of Windows XP.
- limit to less than 4GB the amount of RAM available to Windows.
- enable the 'Memory Hole' setting in the BIOS Setup, if your motherboard supports it.
- install and use Creative ALchemy to convert the DirectSound API calls into OpenAL, which is not affected by this issue.
Karaoke effects make the audio play in mono
You can avoid this issue by using EAX Console to enable Karaoke effects. Audio Console is affected by the issue.
Optionally, follow the steps below.
Open EAX Settings, select a Karaoke effect, then click the Edit button.
Click on the Source (Wave) tab and change the Original sound to 100% and Pitch Shift to 0%. Click the Save environment button.
Repeat the steps for all Karaoke effects.
These changes will be valid only for the current speaker configuration. If desired, repeat the same process for each speaker configuration.
Using other devices to output the DDL encoded audio
Only for Windows Vista or later, you can use any 'SPDIF/HDMI Out' from HD Audio, PCI or USB device to output 5.1 encoded audio.
To expose all SPDIF/HDMI Out devices to Audio Console, run the EndPtUtl.exe in the Audio Console installation folder.
MediaSource DVD-Audio Player system requirements
- 32-bit edition of Windows XP or later
- any Audigy 2, Audigy 2 ZS or Audigy 4 card
Built-in Decoder on Windows Vista or later
To use the built-in decoder, make sure it is enabled in Audio Console.
Select 'SPDIF Out (Creative SB Audigy (WDM))' as the output device of your player and then configure the AC3/DTS filter to send the stream through SPDIF.
When you restart your computer, the Tone settings (Bass and Treble) are not applied.
Just readjust one of the controls one time per boot.

Dolby Digital Live Pack Download

Equalizer and EAX effects are not available when using OpenAL or ALchemy
Only Tone (Bass and Treble) and CMSS 3D (CMSS, CMSS2 and Stereo Surround) features are available.
There is no sound in games with OpenAL support
Disable Advanced EQ and Special FX by selecting 'No effect' before running the game or program.
Equalizer settings are not applied after using OpenAL or ALchemy
After you run a game with OpenAL support or using Creative ALchemy, the Equalizer settings are applied.
Just run Equalizer and the saved setting is loaded automatically.
Tone settings are lost when speaker configuration is changed
Bass and treble settings reset to their default values when speaker configuration is changed.
Download:
Filename: Audigy_SupportPack_6_2.exe
File size: 119 MB
CRC32 hash: BBFFE301
SHA-1 hash: 804AE233F8A10D9D14A9B090A2A5C15EC1A04A24
Mirrors: Google Drive
All files are property of Creative Technology Ltd, unless otherwise stated.

Dolby Digital is the name for audio compression technologies developed by Dolby Laboratories. Originally named Dolby Stereo Digital until 1994, except for Dolby TrueHD, the audio compression is lossy. The first use of Dolby Digital was to provide digital sound in cinemas from 35mm film prints; today, it is now also used for other applications such as TV broadcast, radio broadcast via satellite, digital video streaming, DVDs, Blu-ray discs and game consoles.

• 2Versions
• 7License

In the cinema[edit]

Batman Returns was the first film to use Dolby Digital technology when it premiered in theaters in the summer of 1992.^[1] Dolby Digital cinema soundtracks are optically recorded on a 35 mmrelease print using sequential data blocks placed between every perforation hole on the sound track side of the film. A constant bit rate of 320 kbit/s is used. A charge-coupled device (CCD) scanner in the image projector picks up a scanned video image of this area, and a processor correlates the image area and extracts the digital data as an AC-3 bitstream. The data is then decoded into a 5.1 channel audio source. All film prints with Dolby Digital data also have Dolby Stereo analogue soundtracks using Dolby SR noise reduction and such prints are known as Dolby SR-D prints. The analogue soundtrack provides a fall-back option in case of damage to the data area or failure of the digital decoding; it also provides compatibility with projectors not equipped with digital soundheads. Almost all current release cinema prints are of this type and may also include SDDS data and a timecode track to synchronize CD-ROMs carrying DTS soundtracks.

The simplest way of converting existing projectors is to add a so-called penthouse digital soundhead above the projector head. However, for new projectors it made sense to use dual analogue/digital soundheads in the normal optical soundhead position under the projector head. To allow for the dual-soundhead arrangement the data is recorded 26 frames ahead of the picture. If a penthouse soundhead is used, the data must be delayed in the processor for the required amount of time, around 2 seconds. This delay can be adjusted in steps of the time between perforations, (approximately 10.4 ms).

As of 2015, Dolby Digital in film sound mixing is being gradually replaced with Dolby Surround 7.1, with the more advanced Dolby Atmos technology also gaining in popularity. While majority of movie theaters currently utilize Dolby Digital, virtually all films released today are mixed in Dolby Surround 7.1 and Dolby Atmos.

Versions[edit]

Dolby Digital^[2] has similar technologies, included in Dolby Digital EX,^[3] Dolby Digital Live,^[4] Dolby Digital Plus,^[5] Dolby Digital Surround EX,^[6] Dolby Digital Recording,^[7] Dolby Digital Cinema,^[8] Dolby Digital Stereo Creator^[9] and Dolby Digital 5.1 Creator.^[10]

Dolby Digital[edit]

Dolby Digital is the common version containing up to six discrete channels of sound. The most elaborate mode in common use involves five channels for normal-range speakers (20 Hz – 20,000 Hz) (right, center, left, right surround, left surround) and one channel (20 Hz – 120 Hz allotted audio) for the subwoofer driven low-frequency effects.^[11]Mono and stereo modes are also supported. AC-3 supports audio sample-rates up to 48 kHz.

This format has different names:

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• Dolby Digital
• DD (an abbreviation for Dolby Digital, often combined with channel count; for instance, DD 2.0, DD 5.1)
• AC-3 (Audio Codec 3, Advanced Codec 3, Acoustic Coder 3. [These are backronyms. Adaptive Transform Acoustic Coding 3 is a separate format developed by Sony.])^[12]
• ATSC A/52 (name of the standard)^[13]
• Before 1996, was marketed as Dolby Surround AC-3, Dolby Stereo Digital, and Dolby SRD.^[14]

In 1991, a limited experimental release of Star Trek VI: The Undiscovered Country in Dolby Digital played in 3 US theatres.^[14] In 1992, Batman Returns is the first movie to be released in Dolby Digital.^[15][16] In 1995, the LaserDisc version of Clear and Present Danger featured the first home theater Dolby Digital mix, quickly followed by True Lies, Stargate, Forrest Gump, and Interview with the Vampire among others.^[17][18]

Dolby Digital EX[edit]

Dolby Digital EX is similar in practice to Dolby's earlier Pro-Logic format, which utilized matrix technology to add a center surround channel and single rear surround channel to stereo soundtracks. EX adds an extension to the standard 5.1 channel Dolby Digital codec in the form of matrixed rear channels, creating 6.1 or 7.1 channel output.

Dolby Digital Surround EX[edit]

It provides an economical and backwards-compatible means for 5.1 soundtracks to carry a sixth, center back surround channel for improved localization of effects. The extra surround channel is matrix encoded onto the discrete left surround and right surround channels of the 5.1 mix, much like the front center channel on Dolby Pro Logic encoded stereo soundtracks. The result can be played without loss of information on standard 5.1 systems, or played in 6.1 or 7.1 on systems with Surround EX decoding and added speakers.Dolby Digital Surround EX has since been used for the Star Wars prequels on the DVD versions and also the remastered original Star Wars trilogy. A number of DVDs have a Dolby Digital Surround EX audio option.

The cinema version of Dolby Digital EX was introduced in 1999, when Dolby and Skywalker Sound, a division of Lucasfilm Ltd., codeveloped Dolby Digital Surround EX™ for the release of Star Wars: Episode I – The Phantom Menace.^[15][19] Dolby Digital Surround EX has since been used for the Star Wars prequels on the DVD versions and also the remastered original Star Wars trilogy.^[19]

Dolby Digital Live[edit]

Dolby Digital Live (DDL) is a real-time encoding technology for interactive media such as video games. It converts any audio signals on a PC or game console into a 5.1-channel 16-bit/48 kHz Dolby Digital format at 640 kbit/s and transports it via a single S/PDIF cable.^[20] A similar technology known as DTS Connect is available from competitor DTS. An important benefit of this technology is that it enables the use of digital multichannel sound with consumer sound cards, which are otherwise limited to digital PCM stereo or analog multichannel sound because S/PDIF over RCA, BNC, and TOSLINK can only support two-channel PCM, Dolby Digital multichannel audio, and DTS multichannel audio. HDMI was later introduced, and it can carry uncompressed multichannel PCM, lossless compressed multichannel audio, and lossy compressed digital audio. However, Dolby Digital Live is still useful with HDMI to allow transport of multichannel audio over HDMI to devices that are unable to handle uncompressed multichannel PCM.

Dolby Digital Live is available in sound cards using various manufacturers' audio chipsets. The SoundStorm, used for the Xbox game console and certain nForce2 motherboards, used an early form of this technology. DDL is available on motherboards with codecs such as Realtek's ALC882D,^[21] ALC888DD and ALC888H. Other examples include some C-Media PCI sound cards and Creative Labs' X-Fi and Z series sound cards, whose drivers have enabled support for DDL.

NVIDIA later decided to drop DDL support in their motherboards due to the cost of involved royalties, leaving an empty space in this regard in the sound cards market.Then in June 2005 came Auzentech, which with its X-Mystique PCI card, provided the first consumer sound card with Dolby Digital Live support.

Initially no Creative X-Fi based sound cards supported DDL (2005~2007) but a collaboration of Creative and Auzentech resulted in the development of the Auzentech Prelude, the first X-Fi card to support DDL. Originally planned to extend DDL support to all X-Fi based sound cards (except the 'Xtreme Audio' line which is incapable of DDL hardware implementation), the plan was dropped because Dolby licensing would have required a royalty payment for all X-Fi cards and, problematically, those already sold.^[22]In 2008, Creative released the X-Fi Titanium series of sound cards which fully supports Dolby Digital Live while leaving all PCI versions of Creative X-Fi still lacking support for DDL.

Since September 2008, all Creative X-Fi based sound cards support DDL (except the 'Xtreme Audio' and its based line such as Prodigy 7.1e, which is incapable of DDL in hardware). X-Fi's case differs.

While they forgot about the plan, programmer Daniel Kawakami made a hot issue by applying Auzentech Prelude DDL module back to Creative X-Fi cards by disguising the hardware identity as Auzentech Prelude.^[23]

Creative Labs alleged Kawakami violated their intellectual property and demanded he cease distributing his modified drivers.^[24][25][26]

Eventually Creative struck an agreement with Dolby Laboratories regarding the Dolby license royalty by arranging that the licensing cost be folded into the purchase price of the Creative X-Fi PCI cards rather than as a royalty paid by Creative themselves.^[22] Based on the agreement, in September 2008 Creative began selling the Dolby Digital Live packs enabling Dolby Digital Live on Creative's X-Fi PCI series of sound cards. It can be purchased and downloaded from Creative. Subsequently Creative added their DTS Connect pack to the DDL pack at no added cost.^[27]

Dolby Digital Plus[edit]

E-AC-3 (Dolby Digital Plus) is an enhanced coding system based on the AC-3 codec. It offers increased bitrates (up to 6.144 Mbit/s), support for even more audio channels (up to 15.1 discrete channels^[28] in the future), and improved coding techniques (only at low data rates) to reduce compression artifacts, enabling lower data rates than those supported by AC-3 (e.g. 5.1-channel audio at 256 kbit/s). It is not backward compatible with existing AC-3 hardware, though E-AC-3 codecs generally are capable of transcoding to AC-3 for equipment connected via S/PDIF. E-AC-3 decoders can also decode AC-3 bitstreams. The fourth generation Apple TV supports E-AC-3.^[29] The discontinued HD DVD system directly supported E-AC-3. Blu-ray Disc offers E-AC-3 as an option to graft added channels onto an otherwise 5.1 AC-3 stream, as well as for delivery of secondary audio content (e.g. director's commentary) that is intended to be mixed with the primary audio soundtrack in the Blu-ray Disc player.

Dolby AC-4[edit]

Dolby AC-4 is an audio compression standard supporting multiple audio channels and/or audio objects. Support for 5.1 channel audio is mandatory and additional channels up to 7.1.4 are optional.^[30] AC-4 provides a 50% reduction in bit rate over AC-3/Dolby Digital Plus.^[30]

Dolby TrueHD[edit]

Dolby TrueHD, developed by Dolby Laboratories, is an advanced lossless audio codec based on Meridian Lossless Packing. Support for the codec was mandatory for HD DVD and is optional for Blu-ray Disc hardware. Dolby TrueHD supports 24-bit bit depths and sample rates up to 192 kHz. Maximum bitrate is 18 MBit/s while it supports up to 16 audio channels (HD DVD and Blu-ray Disc standards currently limit the maximum number of audio channels to eight). It supports metadata, including dialog normalization and Dynamic Range Control.

Channel configurations[edit]

Although commonly associated with the 5.1 channel configuration, Dolby Digital allows a number of different channel selections. The options are:

• Dolby Digital 1/0 - Mono (center only)
• Dolby Digital 2/0 - 2-channel stereo (left + right), optionally carrying matrixed Dolby Surround
• Dolby Digital 3/0 - 3-channel stereo (left, center, right)
• Dolby Digital 2/1 - 2-channel stereo with mono surround (left, right, surround)
• Dolby Digital 3/1 - 3-channel stereo with mono surround (left, center, right, surround)
• Dolby Digital 2/2 - 4-channel quadraphonic (left, right, left surround, right surround)
• Dolby Digital 3/2 - 5-channel surround (left, center, right, left surround, right surround)

These configurations optionally include the extra low-frequency effects (LFE) channel. The last two with stereo surrounds optionally use Dolby Digital EX matrix encoding to add an extra Rear Surround channel.

Many Dolby Digital decoders are equipped with downmixing to distribute encoded channels to speakers. This includes such functions as playing surround information through the front speakers if surround speakers are unavailable, and distributing the center channel to left and right if no center speaker is available. When outputting to separate equipment over a 2-channel connection, a Dolby Digital decoder can optionally encode the output using Dolby Surround to preserve surround information.

The '.1' in 5.1, 7.1 etc. refers to the LFE channel, which is also a discrete channel.

Applications[edit]

Dolby Digital audio is used on DVD-Video and other purely digital media, like home cinema. In this format, the AC-3 bitstream is interleaved with the video and control bitstreams.

The system is used in bandwidth-limited applications other than DVD-Video, such as digital TV. The AC-3 standard allows a maximum coded bit rate of 640 kbit/s. 35mm film prints use a fixed rate of 320 kbit/s, which is the same as the maximum bit rate for 2-channel MP3. DVD-Video discs are limited to 448 kbit/s, although many players can successfully play higher-rate bitstreams (which are non-compliant with the DVD specification). HD DVD limits AC-3 to 448 kbit/s. ATSC and digital cable standards limit AC-3 to 448 kbit/s. Blu-ray Disc, the PlayStation 3 and the Xbox game console can output an AC-3 signal at a full 640 kbit/s. Some Sony PlayStation 2 console games are able to output AC-3 standard audio as well, primarily during pre-rendered cutscenes.

Dolby is part of a group of organizations involved in the development of AAC (Advanced Audio Coding), part of MPEG specifications, and considered the successor to MP3.

Dolby Digital Plus (DD-Plus) and TrueHD are supported in HD DVD, as mandatory codecs, and in Blu-ray Disc, as optional codecs.

Dolby technologies in packaged media formats[edit]

HD DVD			Blu-ray Disc			DVD-Video			DVD-Audio			LaserDisc
Codec	Player support	Channels (max)	Max bit rate	Player support	Channels (max)	Max bit rate	Player support	Channels (max)	Max bit rate	Player support	Channels (max)	Max bit rate	Player support	Channels (max)	Max bit rate
Dolby Digital	Mandatory	5.1	504 kbit/s	Mandatory	5.1	640 kbit/s	Mandatory	5.1	448 kbit/s	Optional in video zone for playback compatibility on DVD-Video players	5.1	448 kbit/s	Optional	5.1	384 kbit/s
Dolby Digital Plus		7.1	3 Mbit/s	Optional	7.1	1.7 Mbit/s	N/A
Dolby TrueHD		7.1	18 Mbit/s		7.1	18 Mbit/s

Technical details[edit]

The data layout of AC-3 is described by simplified 'C-like' language in official specifications. An AC-3 stream is a series of frames; The frame size code is used along with the sample rate code to determine the number of (2-byte)words before the next syncword. Channel blocks can be either long, in which case the entire block is processed as single modified discrete cosine transform or short, in which case two half length transforms are performed on the block. Below is a simplified AC-3 header. A detailed description is in the ATSC 'Digital Audio Compression (AC-3) (E-AC-3) Standard', section 5.4.

Field Name	# of bits	Description
Syncword	16	0x0B77, data transmission is left bit first: big endian
Cyclic redundancy check	16
Sampling frequency	2	'11'=reserved '10'=32 kHz '01'=44.1 '00'=48
Frame size code	6
Bit stream identification	5
Bit stream mode	3	'000'=main audio service
Audio coding mode	3	'010'=left, right channel ordering
Center mix level	2
Surround mix level	2
Dolby Surround mode	2	'00'=not indicated '01'= Not surround encoded '10'= Yes, surround encoded

Creative Dolby Digital Live Pack

License[edit]

Audio codec AC3 is covered by patents (expired since March 2017). Patents are used to ask to pay a commercial license to publish an application that decodes AC3. This leads some audio app developers to ban AC3 from their apps, although the open source VLC media player supports AC-3 audio without having paid for any kind of patent license.^[31]

In Dolby's 2005 original and amended S-1 filings with the SEC, Dolby acknowledged that 'Patents relating to our Dolby Digital technologies expire between 2008 and 2017.'^[32][33][34]

The last patent covering AC-3 expired March 20, 2017, so it is now generally free to use.^[35][36]

Open source implementation[edit]

A free ATSC A/52 (AC3) stream decoder, liba52, is available under the GPL license. ffmpeg and the VLC media player each include code for handling AC-3.

See also[edit]

• C-Media – producer of DDL audio chipsets used in many sound cards and motherboards
• Dialnorm – Dolby Digital metadata parameter controlling decoder gain
• Dolby Laboratories – company history and technology development
• Dolby noise-reduction system – analogue recording on magnetic tape, including compact cassette tapes
• Dolby Stereo – first cinema analogue surround sound system
• Dolby SR - professional analogue recording on magnetic tape
• Dolby Surround - renamed Pro Logic in 1987
• Dolby Pro Logic – consumer version of the Dolby Stereo analogue surround sound system
• Dolby TrueHD – lossless codec for HD DVD and Blu-ray Disc
• Dolby E - allows 6 to 8 channels of audio to be compressed into an AES-EBU digital audio stream
• DTS (sound system) – formerly Digital Theater Systems
• SoundStorm – a real-time AC-3 encoder included in certain nForce2 motherboards

References[edit]

1. ^'COMPANY NEWS: A Sound Idea; Dolby Theater Format Adapted to Home Uses'. The New York Times.
2. ^'Dolby - Dolby Digital Details'. Dolby Laboratories.
3. ^'Dolby - What is Dolby Digital EX?'. Dolby Laboratories.
4. ^'Dolby - What is Dolby Digital Live?'. Dolby Laboratories.
5. ^'Dolby - Dolby Digital Plus Details'. Dolby Laboratories.
6. ^'Dolby - What is Dolby Digital Surround EX?'. Dolby Laboratories.
7. ^'Dolby - What is Dolby Digital Recording?'. Dolby Laboratories.
8. ^'Dolby - Dolby Digital Cinema Details'. Dolby Laboratories.
9. ^'Dolby - Dolby Digital Stereo Creator Details'. Dolby Laboratories.
10. ^'Dolby - What is Dolby Digital 5.1 Creator?'. Dolby Laboratories.
11. ^'Dolby-Frequently Asked Questions'(PDF). Dolby Laboratories.
12. ^'Sony USA'. Sony.
13. ^'A/52B: Digital Audio Compression (AC-3) (E-AC-3) Standard, Rev. B'. Advanced Television Systems Committee.
14. ^ ^ab'Movie Sound Chronology'. spannerworks.net. Retrieved 2017-04-02.
15. ^ ^ab'History: 50 YEARS OF INNOVATION'. Dolby Laboratories. Retrieved 2017-03-22.
16. ^'`Batman Returns` To Try Double Dolby'. The Chicago Tribune. May 13, 1992. Retrieved 2017-03-22.
17. ^'Laserdisc Database Search By Date'. Laserdisc Database. Retrieved 2017-04-02.
18. ^'LaserDisc Database Clear and Present Danger'. LaserDisc Database. Retrieved 2017-04-02.
19. ^ ^ab'Dolby Launches Dolby Digital Cinema in Theatres Worldwide with Star Wars Episode III: Revenge of the Sith'. Dolby Investor Relations. Retrieved 2017-03-22.
20. ^'Dolby Digital Live'. Dolby Laboratories.
21. ^Key, Gary (June 8, 2006). 'Nvidia nForce 500: Biostar and MSI Aim for the Gold'. AnandTech.
22. ^ ^ab'A Korean reply comment (the fifth), which explains Dolby license royalty issue of X-Fi. Since the information leaked from SoundPrime, the Korean partner of Auzentech, all sources about this information are Korean'.
23. ^'What Daniel_K wrote to the public is 'This utility was written from scratch and does not contain any copyrighted code. Creative's director of developer relations, George Thorn told me, in a chat session, that is OK to provide mods as patches. It does not modify any executable or DLL, so it is NOT a crack.' Daniel_K's driver MOD itself did not include any DDL module, until it began to support Creative's official DDL pack. Daniel_K's 'DDLUnlocker.exe' merely used disguise to install Auzentech Prelude DDL module'.
24. ^Beschizza, Rob (April 1, 2008). 'Daniel_K, Who Fixed Creative's Broken Vista Drivers, Speaks Out'. Wired.com.
25. ^'There is BrokenBlaster blame about CL - Creative Labs, its much later than the issue but show common case who blame Creative Labs and admire Daniel_K'. Creative Technology.
26. ^Beschizza, Rob (March 31, 2008). 'Silence From Sound Card Maker After Customer Revolt'. Wired.
27. ^'Dolby Digital Live pack, its DDL pack but also say 'Get DTS Connect Pack FREE! for every purchase of Dolby Digital Live Pack.''. Creative Technology.
28. ^'Dolby Digital Plus Audio Coding Tech Paper'(PDF).
29. ^'Apple TV - Tech Specs'. Retrieved 1 January 2017.
30. ^ ^ab'Dolby AC-4: Audio Delivery for Next-Generation Entertainment Services'(PDF). Dolby Laboratories. 2015-06-01. Retrieved 2016-04-26.
31. ^VideoLAN. 'VideoLAN - VLC - Features'. Retrieved 1 January 2017.
32. ^'SEC Form S-1'. ADOBE investor relations website. Retrieved 2017-03-22.
33. ^'SEC Form S-1'. United States Securities and Exchange Commission (SEC) EDGAR system, filed November 19, 2004. Retrieved 2017-03-22.
34. ^'Amendment No. 1 to SEC Form S-1'. United States Securities and Exchange Commission (SEC) EDGAR system, amended February 12, 2005. Retrieved 2017-03-22.
35. ^'The last patent on AC-3 (Dolby Digital) expires at midnight Hacker News'. news.ycombinator.com. Retrieved 2017-05-06.
36. ^https://ac3freedomday.org/

External links[edit]

Sound Blaster Dolby Digital Live Pack

Wikimedia Commons has media related to Dolby Digital.

• Official website, Dolby Laboratories
• Digital Audio Compression Standard (AC-3, E-AC-3) at the ATSC website

Dolby Digital Live Download