7.1 Channel Audio on HP HDX 16t

Hi! I have an HP HDX 16t laptop with a blu-ray player. On one particular blu-ray set the audio only plays in 7.1 channel audio, which plays at a very low volume. How can I get 7.1 audio using the laptop? Thanks for the help.
/Mike Biel

You need the docking station, although I get 5.1 Dolby and DTS on my logitech 5500 with only 2 channel output from the headphone out. In the IDT
panel you should check the plug type icon to check "use other device" so the equalisation is not set for headphones.

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I found a temporary solution :
1) Open the registry editor (Windows key + R, then enter "regedit")
2) Go to this directory :
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}\0001\Settings\Drv7246_DevType_0892_SS146210c7
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Hi Dast Media,
Have you resolve the multi channel export?
I have the same problem...(the export it's ok but i hear only the first two tracks)
i need to export a MXF file with 8 tracks, 6 stereo and 2 mono.
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I purchased my HDX 16t 1200 back in late June 2008. It (currently) runs Windows 7 Professional 64bit and has 4GB of RAM and has anIntel P7450 2.13ghz processor. From the very beginning I had issues, the keyboard suddenly freaked out on me as well as the touchpad and I had to send it back for replacements on both those parts. Then pixels in the middle of the screen died, but not enough to warrant a return for a replacement. Then the hard drive inexplicably began to fail and I had to get it replaced. The replacement I received as a 500gb, 7200rpm ST9500420AS. For a few hours it worked fine but then I began to notice a sequence of clicks and beeps coming from where the hard drive is placed. This happens randomly but if I am doing graphical work, playing a game or watching a video when the clicks occur there will be a visible hang:
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I've already called into HP support and they will be replacing the replacement drive and I asked that they test the replacement before they send it out to me - which they agreed to do.
Now I did a bit of research on my own as to this issue and I found that the click-lag-click (and beeping) issues are extremely common with the replacement hard drive's model. Seagate is aware of the issue but has not released anything to fix it. So far only Apple users have a fix, direct from apple. My concern is that my replacement's replacement will be the same model or will have the same issue. This "top of the line" laptop has really been more trouble than it's worth and I don't have time to keep switching parts in and out. Is anyone else having this issue? If so have you found any fixes?
Message Edited by AvalonWitch on 12-03-2009 04:20 PM
Message Edited by AvalonWitch on 12-03-2009 04:21 PM

The clicking has become incrementally worse and I was assigned a Case Manager with HP. However I have been waiting a week and a half just to speak with them (they called me as I was heading out the door and I gave them hours during which I could be reached: "anytime after 1:30 pm pst). I have not been called. I was told by someone who works at HP that there was no way I could simply return this laptop for a refund and that the best I could hope for was that they would send me a new laptop. However none of HP's curren laptops have what I need, they either lack a full size keyboard, a backlit keyboard, dedicated video or sound cards, or a high-def display at 1080. I am considering just contacting my credit card company and a Lawyer specializing in lemon law as this is literally the 5th replacement done to this laptop in the last 6-7 months and things keep malfunctioning. I would really prefer just to return this laptop for a full refund and be done with it but no one has gotten back to me either here or on the phone.
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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?)

Noob.. GB '08 on MBP Won't Record Right Channel Audio

Hi, I'm a noob to Macs so please forgive me if I've missed something obvious.
I wanted to do some light, goofing around with GB '08 V 4.1.2 with my Roland V-Drums. The Roland V-Drum module output uses two, 1/4" jacks (a "Left" and "Right" channel) which I have coming together in a "Y"-shaped stereo adapter, plugged into my MBP (Latest Leopard - bought new last week - 4 gigs of RAM, updated all OS & GB files 3 days ago) and for the life of me, I cannot get anything to play in the right-channel audio *but only when recording in GB* - otherwise both audio channels work fine.
My Roland V-Drum unit can do mono by simply using one of the two designated Output channels; then I use a mono plug instead of a stereo. Even then I only get my drums recorded on the left side!
I've gone into every obvious configuration setting I can find - both in System Preferences>Sounds and those within GB '08, but for the life of me, cannot find where I've set something wrong. I've swapped cables and adapters. I've also tried speaking into a microphone plugged in and the same thing happens when recording in Garageband - only the left channel gets any sound. If you pan the result to the right, all the sound just goes away.
Anyone have any suggestions to try? Is this a bug? TIA...

Snud wrote:
Thanks to all. - But Matt, I know you just solved the "built-in stuff not working problem"! You certainly win whatever Grand Prize goes along with diagnosing "Drummer Dysfunctional Disorder". Your suggestion most certainly works with the built-in stuff - Thank you!
Your welcome and... I'm pretty sure the award for curing Drummer Dysfunctional Disorder is a combination Nobel Prize + sneakers with the Nobel logo embroidered onto it, which is really great since I could use a new pair. I'm only grateful that this didn't occur last year because I would feel terribly guilty if my own award interfered with Al Gore's since, as I have read, he is also thrilled by the complementary sneakers.
Now see if Apple was really smart, they'd have the *opening screen* of GB ask: "Are you a drummer?" and if you answer "Yes", well that would take us to a much simpler version! Hmm... Perhaps I could design it for them - or be the "Test Monkey". But I digress...
I'm guessing your humility is not exactly warranted... but perhaps an even easier version could be developed and named something like, I don't know, iTunes?
I'm happy to report that, thanks to you Matt, my stream of obscenities is not only causing the LED to register but... I can *record them in stereo* too! I'll try your final suggestion after I sleep on it. Today, the built-in mic... tomorrow, the world!
Words to the wise! (particularly when recorded in stereo and including obscenities)
(I still hope it's ok to leave this as "unanswered" until I try recording my drums instead of the built-in mic, tomorrow)
I suppose there's a sort of philosophical appeal to leaving all questions unanswered: for what is knowledge, and what can we truly know? But now I digress...
So back to your Garagebanding.
The thing is, if you can get your internal mic to work just fine, stereo and everything, that lets you know that at least your system is working, and that there isn't a bug that's crawled into it and is messing things up. Knowing that, you can narrow down your search for the culprit. If the internal mic works just fine, and the software works just fine, what is it about your original setup that's broken?
I would go back to the notion that the computer never received both channels of your output (its input) to begin with, and that perhaps the physical plug is either mono or, by virtue of its shape, not able to properly seat itself in order to make contact on both channels. That's just a guess, but at least the search for the culprit has been narrowed down to likely suspects.
(One possibly helpful distinction: a mono signal can record to both channels through a stereo minijack, but perhaps if the minjack itself is mono - or not connecting to both channels of the input - the signal (stereo or otherwise) might be restricted to one side?)

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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.

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Terry Woolf
Thanks for the reply.
The link to your prior thread is
Audio
I suspect that the issue of no audio for your .mp4 file goes to your conversion method MXF to .mp4.
Please excuse if I am saying what you already know. When you import your video into Premiere Elements (in your case 12 Mac), a project
preset is established, either by you manually or the project automatically. That project preset contains a description of the project settings
for audio as well as video. Unless you select one of the project presets which are described for use with 5.1 channel, your audio in video audio
imports into a stereo project. It is in the export area that you will find your opportunity to customize (if necessary) the settings for audio.
In the project, if applicable to your situation, you can duplicate an audio channel (See Fill Left or Fill Right under fx Effects/Audio Effects).
Please let me ask this to make sure of the details.
If you import your .mp4 with 2 channel audio (derived from your .mxf convert and dragged to Video Track 1/Audio Track 1) and cannot hear the sound....
a. do you see any evidence for an audio file in the Timeline Audio track 1?
b. if you do, how many wave forms do you see, one or two?
c. if you have the audio meters opened while you are playing back the Timeline content in Edit area, do you see 1 or 2 channels and is
there activity in both.
d. when you import the file into Project Assets, do you observe any conforming activity going on in progress bar in the lower right cover of the workspace...if
so, do you wait for it to go to completion before continuing on?
We could also try deleting the conformed audio in the Media Cache Files Folder to force the program to re-conform the audio. See Edit Menu/Preferences/Scratch Disks should show you the location of the Media Cache Files Folder whose contents you will be deleting.
Please review and consider, and then let me know if I targeted your question. If not, please do not hesitate to let me know, and I will rethink my reply based
on your response.
Thank you.
ATR

How get one channel of data from two-channel audio file?

I need to either convert a 2-channel audio file to 1-channel or else get just one channel of data (does this lose some sound?) for a calculation. How would I do that?

In terms of a loop over byte[] data, double[] left, double[] right...
8-bit mono
for (int i = 0; i < data.length; i += 1) {
left[i] = (double)data;
16-bit monofor (int i = 0; (i*2) < data.length; i++) {
left[i] = ((double)data[2*i] << 8) + (double)data[(2*i)+1]);
8-bit stereofor (int i = 0; (i*2) < data.length; i++) {
left[i] = (double)data[2*i];
right[i] = (double)data[(2*i)+1];
16-bit stereofor (int i = 0; (i*4) < data.length; i++) {
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The sequence settings are set as discrete channels. What am I missing?

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Hello,
I am looking to put AVCHD video files (*.MTS) containing 5.1 audio and 2-channel (stereo) audio onto bluray. I would like to convert the 2 channel audio to 5.1 audio, so that all of the files can be encoded onto bluray with 5.1 audio in Encore. I am using Premiere Pro CS6 version 6.0.3. I have tried to bring the MTS files into Premiere Pro, and convert stereo audio to 5.1 using Audition. However when the file is exported to Encore, upon transcoding there is no audio. Please let me know what is the best way to resolve this. Also, would I require something like Surcode plugin, or are there other ways to get around this? Thanks.

"Hi seaspray07,
"Hope this clarifies."
sorry it doesn't - it confuses me and I don't get why you want to do it this complicated way ;-)
1. If you have problems try to simplify your workflow. Why do you try to work with dynamic link in Encore? This isn't the classic route and I don't see why you need it in this case.
2. In a classical workflow you load final encoded audio and video files in Encore - in this case a .m4v and a .ac3 file encoded in Adobe Media Encoder.
3. To get this files you create a Premiere timeline with 5.1 master audio and load your clips onto it.
For all 5.1 clips Premiere will create a 5.1 audio track. For all stereo clips Premiere will create a stereo audio rack.
--> Keep in Mind you can't export a premiere audio track. That isn't possible even though this would be handy in a lot of situations. You alway only export the master audio track of a timeline. That master audio track get's it input from all audio tracks of a timeline. If there is a 5.1 audio track 6 channes are mixed to the master audio - if it's only a stereo track only L, R get's mixed up to the 5.1 master.
The master audio track is what you can hear if you play back a timeline.
4. Why do you want to convert stereo audio tracks into 5.1 audio tracks in the timeline? It needs much more filesize/ ram slows down your playback and gives you a unhandy viewing with lots of emty audio channels... Why dont store and view a stereo track as a stereo track?
5. If you have placed your stereo and 5.1 audio tracks on the timeline you can export the final mix via Adobe Media Encoder with the Surcode plugin as Dolby Digital 5.1 .ac3
"I sent the audio to Audition because I wanted to modify the audio file from stereo to 5.1, and bring it back into PrPro to combine with the video clip from the corresponding MTS file..."
That doesn't make any sense... because Premiere does it automatically for you without Audition. You simply have to do nothing - just place your stereo clip on the timeline and ready.
If you want to use Audition you have to have a real reason for it - for example do extensive audio work and mastering Tasks - conform it to R128 loudness or something like that.
Does this make sense to you? ;-)

7.1 Channel Audio on HP HDX 16t

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