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By comparison, a movie recorded in 5.1 and encoded in Dolby Digital looks like this:ĭolby Digital 5.1/7.1 bitstream > Dolby Digital Decoder (6/8 channel PCM bitstream out)> Windows Audio Service > Sound Driver > Software post processing > Codec > Hardware post processing (Analog) > Speakers It's never recorded and the only thing that ever touches the hard disk is the set of raw audio files. Throughout this entire chain the audio remains uncompressed. Set of single channel wave files > Sound rendering engine (6/8 channel PCM bitstream out) > Windows Audio Service > Sound Driver > Software post processing > Codec > Hardware post processing (Analog) > Speakers The path that sound takes looks something like this: So why not use Dolby Digital in game? There's no place for it. 1 which is sent to low frequency speakers such as the subwoofer) which can be handled by the decoder whether or not the device actually has an appropriate speaker setup. There's also the benefit of being able to have a discrete LFE channel (Low Frequency Effect, the. The benefits of Dolby Digital are only realized when pre-recorded scenes (full scenes, not individual sounds) are compressed in order to save space.
Call of duty modern warfare 3 guns Pc#
When a PC game box features the "Dolby Digital" logo, it typically means that the game contains cutscenes that are recorded in 5.1/7.1 and then encoded into Dolby Digital. Windows Audio is blissfully unaware that this is going on, because as far as the game is concerned the audio is being piped to the speakers as it normally would. The external decoder (such as one in an amplifier) will pick it up as being a dolby digital signal and decode it appropriately. The solution to this is to use Dolby Digital Live, which is a software Dolby Digital decoder that is capable of capturing the 5.1/7.1 signals that are passed to the Audio service and encoding them in real time into a Dolby Digital signal which can be transmitted by a compatible sound card to the external decoder.
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Unlike this, the PS3 and XBox360 support full 7.1 PCM over SPDIF. So, if you want to use an optical cable to connect to an external amplifier you will only be able to use stereo audio by default. If it is played through the speakers the PCM signals generated by the sound engine are passed directly to the Windows Audio service which passes them to the DAC and subsequently to each speaker channel as they were intended.Ī little known fact about Windows Audio is that by default it only allows 2 channel PCM over SPDIF. Once all is said and done, the audio can either be encoded or played through the speakers. Adding an echo is trivially easy when the data is already in a wave format. Ingame audio is almost always recorded in lossless single channel wave files and then passed through the sound engine which modifies them based on their 3D location, environment, etc. Dolby Digital is an encoding scheme which is used to matrix encode a number of discrete channels (typically 5+1 or 7+1) into a single channel for easy recording and transmission. Strictly no witch-hunting, or "calling out", be it of players, (b)admins, or servers.Ĭlick here for further details & explanations of these rules.ĭolby has nothing to do with it. Submissions advertising, selling, buying, trading, or begging for anything, will be removed. Low-effort/quality submissions (rants, memes, image-macros, reposts, "upvote if"-posts) may be removed at the moderators' discretion.ĭiscussions of cheating, exploiting, piracy (etc.) are not allowed. Posting of original or user-made content is encouraged, excessive self-promotion is not. Arguments and disagreements are a part of conversation, insults and harrassment are not. Keep it cordial & on topic - Submissions should be directly related to Battlefield 3 or its universe.
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