Multi-channel loudspeakers and headpho

i have the audigy 2nx and am using the www.alcatech.com bpm pro4 audio software. This software requires either 2 soundcards or one which has multi-channel support. Its basically a mixer - i want to listen to one song through the loudspeakers and another song simultaneously through my headphones. How do i do this ? is there an option in the creative software which enables this ? I have enabled the option in the bpm software accordingly. However i cant use two seperate channels - ie. i always get this same output on headphones and loudspeakers....PLEASE HELP :-) i would dearly love to use this software at a party on saturday the 3th august (in one day

Hi Greg,
See if this article helps: Exporting Multichannel Quicktimes in Premiere Pro: Part 2 | Strypes In Post
Thanks,
Kevin

Similar Messages

New logic user, need help with multi-channel inst and aux strips.

Greetings all,
So I just purchased a new Mac Pro 2.66 and Logic Pro 7 to run with it. I have been a long time Nuendo/Cubase user on the PC side of things but since I got the Mac I wanted a DAW that was supported fully for the apple platform.
Anyways, its a world of difference and I am very confused as I wrap my head around the learning curve, so in the meantime I have one important question maybe some one could help me with.
The question is regarding Aux channel stips for Multi channel instruments. In this scenario I am working with Battery 3, it took me a while to understand that I actually needed to create these aux channels just to have seperate outs in Battery which seems really wierd and overly time consuming.
As an example in Nuendo once you create the instance of Battery, the audio mixer automatically just creates the corresponding stereo and mono channels instantly. This obviously makes is a sinch to assign Batteries pads to seperate outs for eq/comps for seperate sounds.
Now the Battery manual doesnt even make a reference to Aux channels for assigning outs in Logic, I actually had to do a Google search to figure this out.
Anways, sorry for rambling...
Here is the main issue.... How can I quickly and easily create multiple Aux's? In the mixer there is really only enough room in there to add like 1 more Aux strip, if I want to add more than that I need to re-arrange the entire global mixer which seems like a crazy system, surely there must be a more convenient method for getting muti-channel audio instruments set up quicker.
Any help you can assist with would be exceptional!
Thanks in advance.

Not sure what exactly your question is, especially since I don't use battery. But as far as creating aux tracks:
• go to the audio layer of the environment (not the track mixer window), find the two defalt aux tracks
• Highlight all tracks to the right of the aux tracks (these should be bus and output tracks), and drag to the right far enough to fit in a bunch of aux tracks; you might even want to drag the all underneath the aux tracks, if your screen accomodates
• use the key command shift-command-a multiples times to create several new "audio objects", and double click each one to expand
• highlight all the new objects and select options/clean up/ align objects (makes it look nicer)
• still highlighted, over in the parameters section (left side) select a channel, setting it to the highest number aux (at this point, probably "aux 3")
• now individual set the channel for each aux track – you'll see that now you have available "aux 4"; next time you set a successive track you'll see "aux 5" and so on
• once you've got things set up the way you want, save it as a template so you don't have to do this again later

I'm having trouble with a multi channel acquisition and download with PXI-5922

I am having trouble with getting data out from both channels of a PXI-5922. My software seems to be working, but when I do the fetch there is no data for the second channel. I am using the same format for all of the channelList inputs (0,1). I've checked the instrument handles and anything else I can think of, but this is my first time trying to collect data on 2 channels of a digitizer. Any help would be appreciated.

Hi schliepe,
Try checking your code against an existing example. The
Developer Zone Example: Independent
Channel Configuration with NI-SCOPE is a good VI to reference. Also note
that there are several examples that come with the NI-SCOPE driver. They can be
found in Windows by going to Start »
Programs » National Instruments » NI SCOPE » Examples. Additionally, if you find that the examples are not working either, verify that both channels are functioning by running the
NI-SCOPE Soft Front Panel.
Please post back if you have any questions. Have a great
day!
Ryan D.
District Sales Manager for Boston & Northern New England
National Instruments

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?

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 Input on Recei

http://img202.imageshack.us/img202/586/5pchinputlarge9cj.jpg[/img] width="300" alt="Image Hosted by ImageShack.us" >
Ok I know that for the front and rear I would use a 3.5mm stereo to RCA but for the center/sub channel what should I use? Should it be a 3.5mm mono to RCA or something different or can it be a regular stereo red and white one?
Btw how much does this degrade the quality of the sound? I hoping that this method with the multi channel inputs and nice home theater speakers sounds better than a PC speaker system like the 5500.

My setup is similar to yours.
- I have the 5. channel analog outputs of my X-Fi goes to the 5. multi-channel inputs of my preamp-processor. This setup alllow me not only to play my ripped music in 5. also allows me to play DVD-audio disc. You can also play DTS/DD encoded movies as well as long as you set the DD/DTS decoding option to off (internal decoding) in the creative console mixer.
Advantage: Can use the X-Fi CMSS-3D to get 5./7/ expansion
2- I also have the SPDIF output of the X-Fi goes to one digital coax input of my preamp-processor. This setup gives me the same processing as the above except the playback of DVD-audio disc.
Disadvantage: SPDIF will ouput only in stereo, you will need to use the receiver processing modes(Dolby prologic I/II, Neo6, Stereo 5/7) to get 5./7. expansion
For me connection 2 is the better choice for playback mode except DVD-audio, the reason is my preamp processor is a $4K unit with the highest (Audiophile) quality DACs, plus I have the flexibility of setting the bass-management of this unit independently. Plus, I have a multitude of processing modes on this unit such as : DPL-IIx, Neo-6, 5./7. Music etc... to expand a 2 channels signal into 5./7.
I can see you have a digital coax input on your receiver, just buy a mono 3.5mm to coaxial convertor. Connect the 3.5mm SPDIF end to the X-FI SPDIF flexi-jack, and the Coax digital end to your receiver Digital coax in. With this connection you need to set DD/DTS decoding on the X-Fi to ON (External decoder).
http://www.ramelectronics.net/html/RCA-mini-spdif.html#rcabncMessage Edited by BrokenOath on 2-8-2005 0:7 PM

Mult-channel PID control using PID Toolkit

I am controlling the light level in six locations (zones) using light sensors, dimmable ballasts (which respond to a 2 to 10 VDC signal) and the PID toolkit. In my VI, I loop through 6 times (once for each zone) to control the light levels. I use the simple PID.vi to determine the next setpoint for the dimmable ballast on the lights. My problem is as follows, I think:
The PID algorithm uses past response and the current difference between the measured variable and the setpoint to calculate the next setpoint. If my understanding is correct, then I am confusing the PID algorithm by calling it with 6 different data sets. It is almost as if I need 6 separate PID functions, one for each zone.
Perhaps I am wrong about the operation of the PID algorithm. Can someone straighten me out?
Attached is a snapshot of the VI. The FOR loop goes from 1 to 6, that is, once for each sensor zone.
Message Edited by rgentry on 04-29-2007 09:11 PM
Attachments:
temp.jpg ‏92 KB

rgentry,
The PID has two modes of operation: Single Channel and Muti-channel. The way you developed your algorithm, you are using single channel algorithm with multiple setpoint and variables. This will not work properly since LV will not keep the internal states correct for each channel.
To fix this, it is pretty simple. Remove the For Loop and provide the whole 1D array to the PID.vi. This will enable the "multi-channel" mode and every time you call your VI, it will keep the internal states for each channel, as if you had 6 different PIDs in parallel. Notice that the interpolation also will work the same way, you just need to remove the build array primitive.
Hope this helps!
Barp - Control and Simulation Group - LabVIEW R&D - National Instruments

X-Fi: cannot get multi-channel sound or SPDIF passthrough

I've owned an X-Fi XtremeMusic since it first came out, and have been running it with a MCE2005 system. I've had it hooked up to a home theater receiver via SPDIF and 5. analog, but have only had stereo speakers until today. So, right now I'm trying to get multi-channel sound to work. I'm using the latest drivers (have also tried the original drivers) and have all Microsoft patches applied.
First, I cannot seem to get it out of stereo mode. Using the analog outputs to the 5. analog input on my receiver and setting the X-Fi to 5. speakers refuses to produce sound from anything except front left/right. I've used the Speaker Connection Wizard, the THX Console, the Speaker & Headphone console... and no matter what speaker icon I click on the sound comes out of the front left or right as if it is downmixing. I've also tried 4.0, 6. and 7. modes - no improvement. Also, multi-channel sound does not work in MCE setup, games, etc.
Quite by accident I discovered that if I enable CMSS I can get *some* sort of sound from the rear speakers, but only in the sense of an effect. Also, with CMSS enabled, when testing the front center I get the word "front" out of the left/right speakers which then fades out before "center". If I test it again I get nothing (except a slight effect from the rear).
Finally, I cannot get the SPDIF passthrough to work (it DOES work just fine passing out stereo 48khz sound). I've enabled SPDIF on the flexi-jack, I've set Dolby Digital and DTS to "external decoder required", and NONE of my applications present me with an option to use the SPDIF. This includes MCE, VLC and the latest version of CyberLink PowerDVD. Basically it seems that they can't see that there is a SPDIF on the system to use.
Anyone else experienced this? I've spent 5 hours testing everything I can think of and trying different combinations of settings and I am completely at a loss!

Well, I guess I'll answer my own problem in the hopes that it might help someone else.
It seems that hour 8 of frustrated troubleshooting turned up the cure: all of this boils down to Logitech's stupid Quickcam Fusion drivers. With Logitech's "AEC" echo cancellation mode enabled for the built-in microphone, their drivers automatically turn audio acceleration down to second from the bottom. This results in the X-Fi performing nearly no hardware processing (later testing with DXDiag also said I had no hardware buffer). This results in no multi-channel audio, and no SPDIF passthrough.
There are a couple of solutions...
) Disable "AEC" mode from the Logitech Quickcam control panel applet's Audio tab (and reboot). This worked for me.
2) If this doesn't work, go into the Device Manager and disable the Quickcam's microphone (and reboot). This worked for me, but then I tried # which also worked and still let me use the microphone.
3) Logitech's site (which mentions this problem/solution but only in the context of it causing BSOD crashes, not with it messing up multi-channel sound cards) mentions renaming one of their Audio directories to disable the microphone, although I don't see why this would be better than #2 (see http://logitech-en-amr.custhelp.com/...p?p_faqid=4066 for more).
4) Unplug the camera.
So, I'm back in business - or rather, I'm only NOW in business!
Interesting that the Creative diagnostics utility turned up anything amiss. It claimed that everything was hunky dory, when the card was obviously in a mode where it could not possibly work correctly.

Why can I not set dpi in a multi channel file?

I was sent a file that was saved in "multi channel and cannot do the settings I need to do for output. cannot add registration marks, cannot resave as a lower version file and cannot set the dpi I need for screenprinting. I have only been doing this for 20 years and of course this is the first ti,me I have had this problem and the customer is out of town and needs the job at the end of the week.

Open the multi-channel file and Select All>Copy>New, which will let you make a new grayscale image to the same pixel dimensions:
Then you can simply drag and drop the spot channels to the new file. Here my multi-channel spot plates are set as Pantone 7495, 212, and 279:
I can then save the grayscale as a PSD (DCS is no longer needed), place it in InDesign (InDesign does not support a multi-channel color space so it has to be GS, RGB, CMYK, plus spot channels), and either print separations with crops at a chosen line screen, or export the spot separations to PDF.
If you want to skip the InDesign step you can save the grayscale plus spots directly to PDF (PDF/X-4) from Photoshop:

Important question: I have got a PXI-4472 and I am able to do single-channel acquisition. How does multi-channel acquisition work?

Look at the VI: it is quite eleborate, but the crucial point is Data Acquisition and Trigger&Gate (and, consequentely, Write to File operation).
I can add plot on the Waveform Graph DATA, this is rather easy, simply adding the channel numbers in the channel control (es. writing 0,3,7 will collect data from the three channels).
First question: is this operation of adding plots correct?
Second question: does the sampling rate dwindle when I consider multi-channel acquisition? I mean: 1 channel-->100KHz ; 2 channels-->50 KHz
More over, and MORE IMPORTANT: is it possible to set different trigger conditions for different channel
s? How can I control this operation?
Third: can you have a look at the VI as all (the appearence, the functionality, the logical sequence...). I am looking forward to get your advice. In particular:
Look at the frontal panel: what do you suggest to make it "smaller"? More tab controls?
Look at the Block Diagram: do I have to connect ERROR IN and ERROR OUT to every suVI or function that makes this connection possible (as Trigger&Gate and Write File)?
Attachments:
Start&StopTrig_SpectralMeas_style+image.vi ‏700 KB

First: yes, the operation is correct.
Second: yes again. When you consider a multi-channel acquisition, your sampling rate must be shared among the channels.
Third: when you specify a list of channels you want to acquire from, the channel considered for analog triggering is the first you put in the list.
Connect the error clusters whenever you can,in particular when you are dealing with I/O operations.
Bye!

Multi-channel, well-coded and versatile oscilloscope vi

I'm looking to make a really nice multi-channel (e.g. up to 8 signals or more displayed) "oscillscope" type program in labview. I have a board with 16 analog inputs, and would like to be able to display those (or choose from among them certain ones to display). It'd be great to have triggering, saving to csv format, re-scaling the voltage and time scales, etc... all operating on the fly, similar to a Tektronix TDS 2024 'scope, only with more channels.
I've looked at the examples that ship with Labview, and am familar with state-architecture and such that I'm sure I could make it all... but if someone already has something close to this it'd be a big time-saver.
Anyone have any multi-channel, analog signal aquistion Labview VIs they like, use, or would be willing to share?
Thanks!
-Abe

Hi Abe,
Have you considered using NI-Scope Soft Front Panels? You can configure your triggering, channels to display, scaling and save to file (though not csv format) all in this interface. Also, If you haven't already, you may want to check out ni.com/community. There are several user-posted Labview examples that could come close to what you're looking for. Hope this helps!
Cheers!
Brandon G
National Instruments
Precision DC Hardware Engineer

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 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.

How can I use all tracks from multi-channel source audio with Multicam clips?

I cannot figure this out. Working in Premiere I'm prepping for a 2 camera show, with typically 4 to 6 track dual-system audio recorded by the sound guy. I can sync, and make multicam clips any number of ways–whether sync by timecode, sync by audio, or eyeballing–but whenever I edit using the MC clip, Premiere mixes down all the audio channels into a stereo single track, and I cannot pick and choose which audio track from the original to use. With 2-5 people mic'd on lavs, I need to be able to choose which audio is either cut in or heard at any given shot.
Is there any way to have control in multicam clips over which track of audio gets edited into the timeline, or even: that all tracks of audio get cut in? It's very important for the editors to be able to see waveform (which also disappears for some reason in the mixdown) and pick and choose which audio is heard?
I'm sure this might be a simple fix, but I cannot get my head around it for workflow purposes for my assistant editors. We need to use multicam, but this audio thing is driving all of us crazy. None of us can figure out how to have a multicam clip and use it with control over what audio is cut in.

True, but what I need to be able to do is have my multicam sequence in the source monitor, and cut into my working sequence with either just the audio I need from the sound guy's multi-channel WAV, OR cut in all the sound and from then I can just enable or disable what I need or don't need. But also be able to match back to the Multicam source from my working sequence.
I don't want to have to open the synced sequence, and razor blade the things I need and have to copy and paste into my working sequence in order to have the full spectrum of my multi-channel mono lav WAV files...with their waveforms visible.
Essentially, I want my Multicam clips to load in the source monitor, and the ability to cut them into the working sequence without it mixing down the audio into a single track with no visible waveform–which is what it is doing currently. Can I choose to edit in either ALL of the tracks of the WAV file along with the camera shot I want, or control which audio gets cut in?

How to display multi-channel image in the 'proxy'?

There're many examples to show how to display composite channels in the 'proxy'. But I don't find any example to show how to display multi-channel image in the 'proxy'. I found that I can use PSPixelOverlay to display alpha channel data like this:
int nSpotChannel = gChannelCount - 4;
PSPixelOverlay* overlay = new PSPixelOverlay[nSpotChannel];
for(int i = 0; i < nSpotChannel; i++){
       if( i != (nSpotChannel - 1) )
             overlay[i].next = overlay + i + 1;
       else
       overlay[i].next = NULL;
       overlay[i].data = gChannelData + (4 + i) * nPlaneBytes;
       overlay[i].rowBytes = gProxyRect.Width() * gDocDesc->depth / 8;
       overlay[i].colBytes = 1;
       overlay[i].r = 230;
       overlay[i].g = 161;
       overlay[i].b = 174;
       overlay[i].opacity = 255;
       overlay[i].overlayAlgorithm = kStandardAlphaOverlay;
pixels.pixelOverlays = overlay;
Then, Seeing red part, it will trigger a new problem, that is how to get the color value of the alpha channel by plung-in itself? It seems that no channel color value info is in FilterRecord.
If you have other solution, please tell me. Many thanks!

This is what I've been doing - was just curious if there was a way to see a more cohesive image.
If the individual EQ plugins are in fact the answer, is there any way to smooth how the Analyzer displays? The image I posted above, all of the tonal curves are very smooth. The analyzer tool shows a lot of peaks and valleys within the overall curve and it's hard to pinpoint each instrument's "sweet spot." Vocals for example are very hard to spot.
- Morgan

Multi-channel loudspeakers and headpho

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