AAC and multi-channel audio

Can AAC be used to encode multi-channel audio, such as DTS-HD Master Audio?
DTS-HD Master Audio is an optional audio format in Blu-Ray. It uses lossless compression.
There are other audio formats from Dolby Digital, for example, that are used to encode HD audio in Blu-Ray. Can AAC be used to encode those as well, without any loss of information?
Is there any work in progress to make HD audio such as DTS-HD Master Audio available discretely on disc, like what the older DVD-Audio format made possible for 5.1 channel surround sound on disc?
Thanks.

What adjustments do you want to make?

Similar Messages

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    What adjustments do you want to make?

  • This is a very simple question about multi-channel audio playback

    I have an mp4 file that i made and i made it 7.1 surround sound, and i'm pretty sure that this 7.1 surround sound works, as it can be played in VLC. i'm using netstream to load my files now. How do i make it so that flash can playback all 8-channels of sound? I suppose kglad would know the answer

    Flash doesn't support multi-channel audio (yet?)

  • No multi-channel audio from DVD Player or Quicktime?

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  • Multi Channel Audio Instrument [Kontakt 2]: Auxes not working?

    Hi,
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    Dual 1GHz PowerMac G4 (Quicksilver)   Mac OS X (10.3.9)   MOTU 828

    Okay, I found the solution to this, and it's odd enough that I figured that I'd post it just in case anyone else ran into it.
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  • Multi Channel Audio Setup

    I've been trying to follow various tutorials for setting up multi channel audio insruments and I always get stuck at the point where you select Output 3-4, 5-6 etc. from the Aux 1, 2. 3 etc. objects. I never have more than Output 1-2 to choose from. I usually use the built- in audio or sometimes a Lexicon Omega. Do I need another interface to accomplish this or am I doing something wrong. I've accomplished quite a lot of things with Logic, but this has been hanging me up for a year now. Any thoughts?
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  • Multi channel audio outputs from a laptop such as 5.1 or 7.1

    is it possible to get multi channel audio outputs from a laptop such as 5.1 or 7.1 for watching Movies or television while using Windows media Center.

    Ok so i order to help anyone who is interested.
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  • Wanted: Multi-Channel Audio Interface for iMac & GB (USB)

    I am looking for an affordable multi-channel audio interface for my iMac for use with Garageband. My goal is to playback old songs from my old computer (Atari ST) through my Yamaha gear and record the audio into GB so I can mix it. (READ: Not interested in transferring MIDI.)
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    Thanks.

    As you imply, keeping it below $100 makes it tough.
    Generally only the two channel interfaces are close to $100.
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  • Multi channel audio output

    i am trying to output a wav file from a avi file.
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    After Effets, mono or stereo is the only available choice.
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    I'm 99% sure that only the first 2 channels will be imported. I've seen some weirdness where multichannel audio has been bounced to a stereo pair on import causing a jump in levels. Your best bet is to use Soundbooth (or Premiere) or an audio/editing app to do the conversion.

  • Multi-channel audio? How ? (Dolby Digital, PCM etc.)

    So,
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    I am wondering if anyone has gotten that to work.
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    Thanks,
    Dan

    1. Not a great fan of detaching audio except in multicam clips. Generally I'd suggest using the expand audio components function to access the channels.
    2. Yes. Switch off the auto tracks in the browser and only turn them back on for the clips you need in the project. With expanded audio components, if you turn the channels back on they will reappear in the timeline.
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  • Multi channel audio not exporting from fcpx xml as mono to logic always comes in a mixed surround

    I have a long edit cut with 24 bit multi channel wav files (i.e 6 microphones on separate tracks but in a single wav file.)
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    it shows that all 6 are seen as 5.1 surround indicated by the icon.
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    Any ideas on how to get fcpx not to export the audio xml as surround? (it seems that it is locked to that on import no matter how i modify after)

    Ok so i order to help anyone who is interested.
    The only ironic solution to this problem i found was to use a plugin called xto7 to convert the xml to the old fcp7 format.
    i then imported this into premiere pro.
    this was then able to export an OMF that when imported into logic 10 that was using the correct 6ch mono setting as separate tracks.
    Insane but it works until Apple fixes the incorrect meta data import in FCPX that sets the xml export to the default import that is always surround.
    this is the only way i was able to send stems with all the edit points and fades for the sound editor.
    If you don't have premiere lying around you maybe able to do it with fcp7 too we just didn't have it in this studio.
    Fingers crossed Apple fixes the fcpx xml export.

  • Questions on Handling Multi-Channel Audio

    Hi there,
    I'm an Editor at a news shop that has been running FCP 7.0.3 for a good length of time now. Everyone loves it, I love it - however I understand it is becoming dated and eventually we will need to upgrade to a new NLE if we want to stay up to par with latest codec support for new cameras and simple process enhancements (64bit, background rendering, etc.)
    FCPX is one of several options we're trying out, and I have been toying around with the Trial version, seeing the workflow, cutting VO/SOTs and Packages on it.
    The 'new' workflow does not bother me at all, I think there are a lot of enhancements that come with X, despite it seeming foreign to the FCP7 loyalists like myself. However, one thing I'm not quite sold on (or understanding of) yet is multichannel audio. So I'd like to ask a few questions regarding that if anyone would be willing to loan some tips. As a preface here's how we handle audio:
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    Ch 3 / 4 - Usually copies of 1/2 but at Auto volume.
    1.) Is there a quicker way to make detached / split audio channels a default state?
    - I understand that I can take a clip and detach the audio, and then after that, take it one step further and expand the tracks to see all 4 audio tracks on the timeline. However, that doesn't seem like a very efficient way to go about viewing all 4 tracks (or at the very least the 2 main tracks) if I need to select all and take 2 actions to see them.
    2.) What is the best way to 'bring in' only the channels I want to the timeline?
    - Right now the best method I've found has been to select the clip in the browser, deselect the Audio channels I don't want in the inspector, and then make the necessary edit. Maybe in theory I could Select All clips in browser and globally change active tracks? I equate this to disconnecting A/V tracks in FCP7. Is this the best way to handle this?
    3.) Is there a way to designate channels for export?
    - Since there aren't really any 'tracks' in FCPX, it's hard for me to understand what audio goes where on the way out. Usually on our exports, Ch 1 will be dialogue (reporter track, sound bytes, etc.) and Ch 2 will be nat sound. This makes it easy for editors to re-cut from previously edited elements. How do I even go about assigning this? Do channels keep their position (ie. if I dropped in Ch 2 audio from the camera, does that simply NEED to export to Ch 2 on the output?)
    That's about it - although if anyone is particularly passionate about the subject I'd also ask what they think about how all of this - if this is an audio workflow that when learned, can be better... OR if you feel it is a step backwards from other NLEs like FCP7, Avid, etc.
    I would appreciate any and all answers regarding this. Thanks for your time!

    1. Not a great fan of detaching audio except in multicam clips. Generally I'd suggest using the expand audio components function to access the channels.
    2. Yes. Switch off the auto tracks in the browser and only turn them back on for the clips you need in the project. With expanded audio components, if you turn the channels back on they will reappear in the timeline.
    3. You use roles for this. I know time is tight for news, but taking a few moments to assign roles to the clips in the borwser, which you can do in globally, will allow you to export with separate tracks.

  • Multi-channel audio play

    I want to play one or more simultaneous sources to each of several stereo outputs.
    So either a multi-channel soundcard (eg 5.1, 7.1) or several cards, or even several multi-channel cards.
    As far as I understand it the multi-channel cards are made up of several stereo channels (main, surround, centre etc).
    I want to play different sound files (or even several files simultaneously) on EACH of these stereo outputs.
    Just to prove that I am completely crazy, the reasoning behind this lunatic requirement is that the loudspeakers are all mounted under a model railway layout, and are to be used to create ambiance.
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    I have searched several code examples on sun, and on jsresources but cannot find anything that uses m ultiple simultaneous outputs.
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    Many thanks,
    Howard Amos

    You are looking to do SPDIF passthrough.........
    If you have that option in your DVD software you need to be sure you are passing the signal through untouched. There is a post of how to do this on the shark007.net forum,
    http://shark007.net/forum/Thread-problem-spdif-passthrough-x-fi-decoder-Win7
    and make sure that in PowerDVD or WinDVD or whatever player you are using, that SPDIF passthrough is selected. If you have Dolby digital or DTSConnect enabled you are sending a signal and encoding it, when your receiver is the device that wants to decode it.

  • Firewire Multi channel Audio Inputs

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  • Multi-Channel Audio to USB converter

    We have an old windows pc with an awesome Altec Lansing ADA995 audio system, and I was wondering if it was possible to hook this system up to our new Macbook Pro with a converter to USB or the like.
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    wow wasn't that speaker system branded by Dell? A friend of mine had them and I remember setting them up for him - those things were LOUD! The volume at like 10% was loud enough to be heard thought the house - and isn't this the model that doesn't even have a volume knob? (other then the bass volume knob on the back of the sub) I think you had to have a special sound card correct? SantaCruz or something like that?
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    http://www.amazon.com/Channel-Surround-Sound-Speaker-Adapter/dp/B0009S9SU6
    Hope that helps.
    -Scott

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