Confusion about digital audio handling in Apple eco-sphere

Confusion among Apple users. We need some answers about bit rate and word lengths in the Apple eco-sphere. This is the source material we have today:
CD 16/44.1 -> iTunes rip at 16/44.1
CD 16/44.1 -> iTunes rip at 16/48
HD audio 24/96 -> iTunes 24/96 downloads (maybe in FLAC or WAV converted to AIFF or ALAC?)
On the Mac lots of things happen with audio:
1 Conversion programs are available for CD ripping and file format changes. I have a small contribution to this part of the confusion, I purchase FLAC files and convert to AIFF using the program XLD, which seems to me to be ideal. Others may have different solution. iTunes also has a good reputation for direct CD ripping.
2 The setting of AudioMIDI (number of bits and rate) can be changed for the output up to 24/96, what effect does this have? I know for certain you have to restart iTunes if you change the settings as it reads them only once at startup.
3 Playing a file with a different bits/rate may or may not up-/down-sample. For example with AudioMIDI set to 24/96, what comes out when you play a 16/44.1 file? And vice versa, play a 24/96 with AudioMIDI set to 16/44.1, what comes out? Is it the setting of AudioMIDI that defines the output itself or the setting iTunes reads from AudioMIDI when it starts up?
For example if I start iTunes with AudioMIDI set at 16/44.1, then change it to 24/96, does iTunes continue to output 16/44.1 or does the system up-sample to 24/96? And vice versa.
4 Now the confusion gets worse if you stream the files to an Airport Express or New Apple TV. What conversions does iTunes make, does AudioMIDI have any effect, what is the bits/rate spec for the stream,is this different for Ethernet wired or WiFi connections, what conversion do the AE or ATV do, if any, and what does it output for each of the stored file types.
We need a complete and clear description of all of these issues so we can resolve the many, many discussions that are on the forum.
Any volunteers to prepare the manual?

I have had no issues with the D3 and Apple TV working after sleep. Indeed, there is no data connection between the two except that the Apple TV sends a laser based digitial audio signal to the D3 for DA conversion. The D3 does not communicate with the Apple TV and the Apple TV does not signal to the D3 that it is asleep or awake. The D3 just sits there and waits for the light to come in for conversion to analog.
I suspect your problem is in the Apple TV. Perhaps you have a bad unit and need to get a replacement under warranty (ASAP if still under the 90 day but hopefully you bought the Apple care 1-3 year warranty with it?) Regardless, even out of warranty, if you make an appointment with an Apple store via the web, show up, very nicely tell the Genius Bar person that the toslink feature seems to never have been working (does not matter that it goes to a D3 or a $6000 DAC so don't mention it!), they will check your warranty, see that it is bad, and 9 times out of ten, hand you a brand new Apple TV unit! They take the old one back, refurb it, and resell it. No one looses. Be nice the whole time! Even if they say you are out of luck, just be nice. Nice really works at the Apple store!
The other issue that might cause this is syncing. If the D3 or Apple TV are hooked up to a power strip that shuts off to save power (or that you shut off manually), this might unsync the two. So leave both on power lines that always remain on. That's how I have mine set up.

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Confused about digital signatures

Please refer to this archived thread:
http://www.adobeforums.com/webx?128@@.59b4d8d6
I'm researching digital signatures because we have a request form that was created in Acrobat 7.1, and that a user signed by creating his own signature in Reader 8.x. In Acrobat 7.1, I see a message when the file is opened that it has been digitally signed, and it verifies the signature. I'm trying to figure out whether that signature process would satisfy an auditor as to its authenticity.
But according to the above thread, I'd need at least Acrobat 8.0 to "enable" a PDF to be signed. What does that mean? The form I received, by all appearances, *was* signed. It didn't need a special signature field... the signature was added over a standard text field and it was recognized and authenticated, and appeared in the signature pane in both Acrobat 7.1 and Reader 8+.
Also, what does the 500 signature limit mean? By what process is it determined how many times a form has been used and signed? There is no tie, as far as I can see, from one copy of the form to another. The user simply saves a copy, fills it out, and sends it in. Many different people use that form (it's a work request form for IS services). Does the 500 limit apply in this scenario?
If anyone could please advise and point me toward documentation that would help me understand how all this should work, I'd be deeply grateful.

>But according to the above thread, I'd need at least Acrobat 8.0 to "enable" a PDF to be signed. What does that mean?
It means that you need to use Acrobat 8.0 Professional or above to
prepare a PDF in a special way.
If this is not done, Reader cannot sign it.
> The form I received, by all appearances, *was* signed.
One possibility is that the person who signed it was not clear about
what software they actually have.
>
>Also, what does the 500 signature limit mean?
The EULA gives the legal details that lawyers would apply. It has
seemed that each copy used counts towards the 500. If there is ANY
POSSIBILITY of this limit being reached it is prudent to use Adobe's
server enabling software instead.
Aandi Inston

I'm confused about the apple ID transition from my aol screen name. Does it continue to use my aol email as my apple ID, converting it somehow or do I need to provide a new email address or just create a new username for the apple ID?

I'm confused about the transition to an apple ID that doesn't use my aol email to sign in. The instructions are vague and ambiguous. Any help would be appreciated.

OK, so if your current Apple ID using your AOL Username (like johndoe), then you need to log onto Manage your Apple ID and EDIT that AOL Username to a valid email address: Apple - My Apple ID
If you have an AOL email address (like [email protected]), and you are not using that as another Apple ID, you can change the AOL Username Apple ID to that. Otherwise, you can change it to any valid email address (which you will have to verify when you change to it).
Hope that clears it up. Post back if it doesn't!
Cheers,
GB

Installing OS9 onto G4 Digital Audio

Hi,
I was directed here to get better help with this topic. As the title says, I want to install OS9 onto my Digital Audio G4 tower but having little success. I have ttried various discs (9.0, 9.1, 9.2) and none let me install the OS. The best I can get is the "Welcome to Mac OS 9.1" before the bomb screen shows saying there was an unimplemented trap problem. To get that far I have to boot off of a 9.0 disc to get the Floppy and ? error before I change to a 9.1/9.2 disc to start the installer. If I try to boot from the 9.1 or 9.2 discs directly, my Mac complains that there's no bootable medium. I have tried various images and even retail discs (including one that came with the original OSX package) to no avail.
Is there anyone that can help?
Thanks,
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Make sure your 1/2 AA 3.6V PRAM battery is under 4 years old. Make sure you are in fact using a Digital Audio:
http://support.apple.com/kb/HT3082
The Digital Audio never officially supported 10.5. If you used LeopardAssist to install 10.5 on it, double check with LeopardAssist's author that didn't affect your ability to use 9 with it, since 10.5 is not compatible with Classic, but is compatible with dual booting into Classic.
If the Mac has a third party processor upgrade, the firmware may have affected its ability to use 9.
Use this article to determine which versions of 9 CD can work with your Mac, once you have identified your Mac accurately with HT3082:
http://support.apple.com/kb/HT2191
Make sure your 9 retail copy says in black text the version of 9 that is newer than the minimum shown in the article:
9(.0), 9.0.2, 9.0.4, 9.1, 9.2.1 are all retail releases in the sequence of release.
The 9 CD has an orange 9 logo with a white background, and does not Upgrade, or Dropin on it, or any Mac model on it. Lastly, verify the startup manager can see the 9 CD after being inserted:
http://support.apple.com/kb/TA27043
And the curly arrow is clicked on it. If it doesn't see the CD, then it is not compatible.

TS3789 digital audio from apple tv not working

the digital audio output from my apple tv to my reciever was working initially. It is no longer working. Any ideas?

Welcome to the Apple Community.
Have you tried adjusting the "Audio Out" and the "Dolby Digital" settings in settings > audio and video? It may be worth trying several combinations of these settings, although typically it is the "Dolby Digital" setting that causes most problems for users.
Also make sure that you have correctly mapped the input port on your sound system to the output, if you are unsure about how to do this, refer to the manual that came with your sound system.
Have you tried playing various content sources (i.e. podcasts, music, iTunes Store video, other video etc), do you have the same problem with all types of comments? You might also check that you can see a red light at the end of your optical audio cable. Is your optical audio cable plugged straight into your sound system, or does it go through a switch or other device?

I'm confused about TV Out... dissappointed with Apple...

Hello!
Well, I'm really confused with the information regarding TV out.
Now I see Apple sells a A/V cable ($19) that plugs into the Headphone port of the iPhone but that doesn't work with the iPhone (but audio works).
Apple also sells a component and composite A/V cable ($49) that plugs into the dock port of the iPhone. From what I can tell, this does work with the iPhone. Wow $49 is alot of money for a cable...
I also see a nice little universal dock with a remote control ($49). However, I don't see any info regarding the use of both the $49 A/V cable plus this will work. I see many posts saying the dock that comes with the iPhone will not work. All of this unofficial and nothing official from Apple.
I see a lovely little tutorial on how to purchase songs from the WiFi iTunes store but nothing on what I need to make the TV Out work with my TV/Home Stereo.
So, can anyone help? Can I get both the universal dock w/remote and the component cables and use them both?
Can Apple produce some information regarding TV out and the devices needed to get this to work? Am I blind and stupid because its already out there (in a non-forum based response)?
Thanks in advanced

Dave's right but let me answer this particular question:
Can I get both the universal dock w/remote and the component cables and use them both?
Yes. That's exactly what I have and it works great. You get get the component cables and use them without the dock, but you'll have to plug the cable in and out of your iPhone. You can't use the dock that came with the iPhone because it doesn't have all the pins out (plus it doesn't have the remote). So buy both (about $100 total) and you just dock the iPhone and use the remote (which works great but remember the remote will have limited functionality -- start/stop, FF/Reverse, and jumps.
The image is great whether you use the component cable or the composite cable and I highly recommend it.

Will an optical digital audio cable improve the sound when I am viewing content thru Apple TV

I have a 2nd generation Apple TV. When I view content via my Apple TV the sound gets "fuzzy" as I increase the volume on my TV. If i connect Apple TV to my Samsung HDTV with an optical digital audio cable, with the sound quality improve??

people say that if the atv2 dont have a connection to the tv optical is muted
I have a atv1 and been using the optical out with my sony stereo system for ages mute the tv so only 1 audio source and on atv1 it play out the optical even with the tv off
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Just hooked up my APPLE TV to my Pioneer Elite Pro 1120 HD Just hooked up my APPLE TV to my Pioneer Elite Pro 1120 HD TV (2004/05). I get picture fine (although only 720p), but I can't get sound. Any ideas? I have a Optical Digital Audio cable, but not su

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how is it connected?
if you use a hdmi to dvi converter then you only get picture and not audio because dvi don't carry audio same with vga

If I download a video from my video camera to a new (current 1/12) iMac 21 inch, how can I burn it to a DVD using the computer itself. Is this possible? Do I need to buy additional software. Two salespeople at the Apple were a little confused about this.

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The DVD recorder I'm referring to is one I've use for years. It is not attached to my aging iMac in any way. I simply play the video from my camcorder (mini-dv tape based Canon HV20) into the DVD recorder and create a DVD that can be played in any DVD player. I can only do minimum editing so what goes in is what I get. This has been fine for creating dupes of the various things I shoot.
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What I'm understanding from you and others is that this would be possible if Apple had included iDVD in the software that comes with the iMac, or if I purchase the iLife Family Pack, or buy the correct version of Toast. I'm hoping I can persuade Apple to sell me an iMac with iDVD installed.
Essentially I want to move from a basic process of creating DVD copies to the more sophisticated process of creating one from an iMac.
Thank you again for your help and wisdom.

HT201320 I am having trouble with password. Forgetting password,as I have many mail IDs like yahoo,gmail,hotmail,apple, I cloud etc.,thus confusing about password and restating through procedures. The altered password is not accepted I Safari

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I'm having the same problem, what did you do?

Apple TV3 HDMI - DVI jack fine. TV has no DVI digital audio input.

I can buy a converter from HDMI to DVI for video, My TV does not have a digital audio input for the optical cable. I may be able to plug into my sony surround sound amp in to the SA-DC CD in optical port and just play through the surround sound all the time? Which would not give me sound if I used the TVs internal speakers? Or there may be a converter from an optical audio to a R & L DVI Audio Input Jack?

Before you do just note that HDMI is the only supported connection so there will be no guarantee with any converter used. If it does work you will be unable to view protected content, unless your monitor specifies HDCP compliance. Functionality could also cease at any time.
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Can I out an Apple cpu G4 933hz into an Apple digital audio?

I know that the cpu will fit but will it operate?
reason for asking is that I wish to put a third party dual cpu upgrade in the 933hz and wish to utilise the 933hz cpu by placing it into an older G4 digital audio.

I just installed my 533 digital audio CPU in a 450MHz cube. It fit amd works. However you need to take into account pin configuration with bus speed and processor speed when swapping cpu's
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Laish

About the digital audio input/output

So, those accept optical digital audio, and what kind of other digital audio signals?, what kind of adapter i need to use this feature?, so it is compatible with any 5.1 audio system like home theathers etc?

so it is compatible with any 5.1 audio system like home theathers etc?
As long as the stereo has a digital optical audio input, yes.
The port is a "mini-Toslink" port so you'll need a mini-Toslink to Toslink adapter and then a standard digital optical audio cable (Toslink cable). Sometimes you can find a cable with one of each plug at either end.
-Doug

New 15" HD PB's have digital audio in/out - what about older

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Tim

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Has anyone experienced the loss of audio when using Apple TV when it has been working fine?

I can't get any audio through my reciever when using Apple TV. It's been working fine until a week ago. I've check my reciever, unplug the TV, and Apple TV as described but nothing. I switch to my Direct TV input and I can get audio when not using ATV. I've tried most everything I've read on blogs but nothing. One of those "pull your hair out" issues. Any direction would be appreciated. Thanks, Vince

Hi there Vfall!
I have some information for you that can help you troubleshoot this issue:
If you can see video but can't hear sound
If Apple TV is connected to a receiver, make sure the receiver is turned on.
Make sure the input setting you've selected on your receiver matches the input you have your audio cables connected to. See the documentation that came with your receiver for more information.
Make sure the volume on your TV or receiver is turned up and isn't muted.
Check whether you can hear sound while playing video only. Also, check whether you can hear audio feedback while clicking through menu options.
If you're connected to the HDMI port on your TV and Apple TV, make sure your TV supports audio through its HDMI port. The HDMI ports on some older TVs support only video.
If you are using HDMI audio, try disconnecting and reconnecting the HDMI cable.
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Try the other audio outputs on Apple TV to see if they work.
If possible, try using different audio cables.
This information is taken from the following article:
Apple TV: Basic troubleshooting
http://support.apple.com/kb/ht1551
Thanks for coming to the Apple Support Communities!
Regards,
Braden

Confusion about digital audio handling in Apple eco-sphere

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