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.
Clearly I cannot use the Java Sound Engine mixer as that can only drive the primary output.
I have searched several code examples on sun, and on jsresources but cannot find anything that uses m ultiple simultaneous outputs.
Can anyone point me at any useful starting point.
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.

Similar Messages

  • 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?

    I have the A52Codec 1.7.6 installed. The codec preferences are set to output multi-channel audio. I have my Audio MIDI setup speaker configuration setup for multi-channel audio and the speaker assignment tests are all perfect. VLC plays back files with AC-3 soundtracks in perfect 5.1 multi-channel sound. Final Cut plays multi-channel audio properly as well.
    When I watch a DVD, it is decoded to stereo. The dialog on 5.1 always comes from the left and right speakers and never from the center channel. It doesn't matter whether I remove the A52Codec and try again the result is aways the same, 5.1 audio in Quicktime and DVD Payer gets decoded to stereo. It is not that extra channels are missing, if that were true I'd get no dialog at all.
    What do I have to do to make the DVD and Quicktime multi-channel audio decode as multi-channel audio and not stereo.

    I'm not sure if this will resolve your issue or not, but have you configured it using /Utilities/Audi MIDI Setup ?

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

    Hi,
    I've searched the forums and come up with several posts about using multi-channel audio instruments, but none seems to exactly address the issue I'm seeing (and being confused by). I'm trying to set up Native Instruments' Kontact 2 sampler in multi-channel mode in Logic Pro 7. I perform the following steps:
    1. On an available audio instrument object, I click the input drop-down, select Multi Channel -> AU Instruments -> Native Instruments -> Kontakt 2.
    2. When Kontakt 2 opens, I load, say, three different instruments.
    3. In Kontakt 2's Outpus area, I create three outputs, labelled "st. 1", "st. 2", "st. 3". I cable these to "Plugin Output 1" and "Plugin Output 2" for st.1, "Plugin Output 3" and "Plugin Output 4" for st.2, "Plugin Output 5" and "Plugin Output 6" for st.3.
    4. In Kontakt 2, I assign the output of instrument 1 to st. 1, the output of instrument 2 to st. 2 and the output of instrument 3 to st. 3.
    5. Back in Logic Pro, I create two new (stereo) audio objects and assign them to channels Aux 1 and Aux 2 (and name them accordingly).
    6. In my Aux1 object, I select its input drop-down and choose Instrument1 -> Kontakt2 3 & 4.
    7. In my Aux2 object, I select its input drop-down and choose Instrument1 -> Kontakt2 5 & 6.
    Okay, so basically I'm set up now, right? So to test this out, I set the MIDI receive channel of all of my instruments in Kontakt 2 to omni and click on the built-in keyboard in Kontakt 2. I can see the volume level indicators on all three instruments light up. I can also hear all three instruments coming out of my speakers. However, when I look at the environment page where I've created these objects, I find that they're all coming as a stereo sum from the original audio instrument object. The Aux1 and Aux2 objects are just sitting there doing nothing.
    What gives?
    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.
    It turns out that the multi-channel thing does not work at all when you play Kontakt 2 from the built-in keyboard (in K2). Visually, K2 still shows all the audio going out on the corresponding channels, etc., but I guess it's summing it and outputting in stereo only when you do that. If you send it data from Logic, it works just fine. So I had this setup correctly all along.

  • 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?

  • Multi channel audio output

    i am trying to output a wav file from a avi file.
    this file has multi channel audio, in this case 4 channels, though when outputting the audio by
    After Effets, mono or stereo is the only available choice.
    In this case, which channel will be extracted from the avi file?

    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 mapping and adjusting.

    Hello All,
    I am trying to understand the concept of multi-channel audio and the way premiere handles the files.
    I have an MXF file which contains 4 channels of audio.  I am able to get premiere to view all 4 channels with an adaptive track, however, how do I make adjustments to each track? 
    EX: Say I want to adjust one of the channels within that adaptive track, how would I do that.
    Former FCP user thanks you.
    - Ryan

    What adjustments do you want to make?

  • 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?
    Thanks,
    Tom
    G4 iMac 1Ghz   Mac OS X (10.3.9)  

    multi channel audio instrument doesn't require a special card or interface
    any interface with stereo output should work
    you need to make sure your audio instrument supports multi channel
    logic pro only has Ultrabeat and EXS24 as multi channel
    under the plug-ins choose multi channel instead of stereo or mono then choose what ever is under multi channel
    example BFD, RMX, KORG LEGACY and other 3rd parties that support Multi
    stash

  • 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.
    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.

  • 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.)
    My goal is to get at least 4 and ideally 6 channel/track recording in GB. I’m not sure if the multi-channel units I see, such as the Alesis MultiMix 4 or the Behringer Xenyx Q802USB send all channels to the Mac or if they mix it down to two channels first.
    I’d prefer to mix all the channels in GB rather than pre-mix it. Also, I’d prefer to have 1/4” jacks; XLR would be a nice bonus. USB; since Firewire is going away and Thunderbolt is too new.
    Any suggestions? I’m trying to keep this under $100. (Also, I know I can use multiple low-budget devices and aggregate them in Audio/Midi, but I do NOT want to go that route.)
    Thanks.

    As you imply, keeping it below $100 makes it tough.
    Generally only the two channel interfaces are close to $100.
    Check out Hang Times FAQ:
    http://www.bulletsandbones.com/GB/Interfaces.html

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

    So,
    Take 2 now support 5.1 channels audio out, at least for some HD rentals.
    I am wondering if anyone has gotten that to work.
    I have Apple TV connected via HDMI to my receiver (which can decode both the bitstream as well as linear PCM for multi-channel tracks).
    However, I don't seem to get any multichannel, and the Dolby Digital toggle in Apple tunes makes no difference.
    Has anyone gotten 5.1 to work, and if so, which which movie/tv show/trailer?
    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.
    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 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.)
    This is very a very common production practice.
    when i import into fcpx it defaults to seeing the files as surround. I change this to mono so i can mix and spit the audio between each mic.
    The last step in the edit is to hand the mix off to the sound designer in logic.
    however no matter how i export the xml file for logic. it always comes in as a surround file again instead of mixed mono files.
    it shows up in logic as 6 tracks but all but generally only the top track has a mono mix of all 6 and the rest are blank.
    it shows that all 6 are seen as 5.1 surround indicated by the icon.
    interestingly if i just import the file directly into logic it comes in as 6 mono files. (the icon for mono showing and all are separate microphones)
    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.

  • Firewire Multi channel Audio Inputs

    Is there a list of all the portable multi channel firewire A/D D/A devices for the powerbook in with Logic Pro?

    What adjustments do you want to make?

  • Multi-channel Audio Recording

    I am using a Canon XL1s and recording to 4 audio channels. On Location recognizes this and says it is capturing all 4 channels. But how do I access the 3/4 channels after recording? Channels 1/2 are the only ones that play back.

    OnLocation currently records only 2 channels of audio. It looks like you found a bug in that the metadata shows 4 channels even though only two are preserved.

  • Outputting Multi-Channel audio to DA-88

    I am trying to layback 8 channels of audio to a DA-88. I am sending 8 channels of AES out of my Multibridge extreme to a IF88-AE AES to TDIF converter that feeds the DA-88 deck. I am able to see the audio on all 8 channels of the DA-88 deck when
    playing the project. When I try to "edit to tape", FCP is able to control the machine and it goes into record but there is no audio when it is recording. I have checked everything and can't seem to get this to work. Any advice??

    so you've deselected video on the edit to tape window and you have 8 channels of audio selected in the edit to tape window, and your sequence preset has 8 mono channels of audio output? if your controlling and it goes into record the only other instructions it should need would be to record enable the tracks and what clock to look at. are you manually record enabling the tracks or letting fcp do that?

Maybe you are looking for