Simultaneous computation and playback

Hey everyone,
I am attempting to simultaneously compute and playback audio
at the same time, but I am not sure how to approach this for my
application. I am computing the audio chunks dynamically by
allowing for real time manipulation of the audio. I have previously
performed all the computation before playing and only updated after
each loop of the approx. 5 sec audio loop. The problem I run into
is that I would like to compute in the background while playing the
audio to the user. Right now I get the obvious periodic spots of
noise in between each section of audio playing because it is taking
time away to compute the next chunk of audio. Can anyone provide
any help/advice or guide me to an example? I took a look at Doom 1
and I noticed the audio can be a bit choppy there also...is that
just what I am left with our can the audio be computed on the fly
(signal passed through a filter basically)? Thanks in advance.

Yeah, but it is a complex setup and not cheap.
PICTURE READY.
http://www.virtualvtr.com/pictureready/pickeyaaresofuse.html
Shane

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Simultaneous capture and playback - is this possible?

Hello all,
I'm looking for a way to simultaneously capture NTSC footage into Final Cut and have that captured file available for playback within another program while it is still recording. Kind of like time-shifting with a Tivo. Does anyone know how to do this? Are there certain software/hardware combinations that would allow something like this?
Thanks for your time,
Mark

Yeah, but it is a complex setup and not cheap.
PICTURE READY.
http://www.virtualvtr.com/pictureready/pickeyaaresofuse.html
Shane

Simultaneous Playback to Computer and Airport Express

As others have posted it appears possible with iTunes 6.0.2 to play to both a Computer and an Airport Express.
I have an Airport Express in my Kitchen, which has been updated with the Airport Setup Assistance.
If I shift-click on the speakers drop-down in iTunes to pick "Kitchen", I get the following:
"The current remote speaker "Kitchen" does not support playback as part of a group. Do you want to switch playback to the computer?"
Any thoughts and ideas are welcome. I've tested this on a Mac mini and a dual G4, both running 10.4.4 and iTunes 6.0.2. The Mac mini has an Airport Extreme card.

My original problem has been resolved. I ended up doing a hard reset of my Airport Express, then running the AirPort Express Firmware Updater. After re-establishing connection to my wireless network, I now get the Multiple Speakers option. Some links:
Airport Express Firmware Updater:
http://discussions.apple.com/thread.jspa?threadID=309565&tstart=0
Resetting a Airport Express:
http://docs.info.apple.com/article.html?artnum=108044

Playback to Computer and Airport Express

Others have posted that you can playback to both a computer and an Airport Express simultaneously with iTunes 6.0.2.
I have an Airport Express in my kitchen, and If I shift-click on the iTunes speaker drop-down and select Kitchen I get a warning:
"The current remote speaker "Kitchen" does not support playback as part of a group. Do you want to switch playback to the computer?"
Single selections on the drop-down merely switch iTunes output between Computer and Kitchen.
I have upgraded the firmware on the Airport Express using the Airport Setup Assistant. My Mac is running 10.4.4 and iTunes 6.0.2. Ideas and thoughts are welcome.

See http://discussions.apple.com/thread.jspa?threadID=309565&tstart=0

Is it possible to do the audio capture and playback simultaneously?

In short :
Is it possible to do the audio capture and playback simultaneously? . If it is not supported directly by Sun, pl suggest another way to achieve the same.
In detail:
I am doing a voice chat application by using the streaming through UDP . I am able to play the byte stream. But , is it possible to capture sound simultaneously (while playing the audio) to send to the other end?
Edited by: dhillarun on Jan 4, 2008 7:11 AM

If you're Airplaying from you computer, you might be able to do this. Here's what I would try:
Go to the Airplay icon in iTunes. You should see both your Apple TV and your speakers listed as options. Select "Multiple speakers." You'll see both devices together. Turn the volume all the way down on the Apple TV. You should be getting the video on the TV, but only hear audio through the speakers.
Using the "Multiple Speakers" option will sync the output of your devices so that the sound matches the picture.
I haven't tried this myself, but I'm thinking this would work. However, this approach will only work when using Airplay from your computer – not from am iPad or iPhone – as they don’t have the "Multiple Speakers" option (as far as I know). It also won't work with content streamed directly to your ATV, obviously, because there's no way to stream from ATV to other devices.
Let me know if this works.

DVD Playback on Computer and Standalone-Player

Hi,
Since a lot of people here author DVDs professionally I wonder how you handle the quality-subject with your customers. Generally I wonder about the differences between standalone players on one hand hand on Computers or Laptops. Different monitors and especially different DVD Software players seem to have a major influence on the quality beside the qualityloss from scaling PAL or NTSC up to computer monitor resolutions anyway.
I already had 2 customers complaining abouth the quality (always on computer-playback!). Standalone-Playback is fine, but computer-playback gives some real bad results with DVD-SP authored DVDs.
I tried tweaking some of the settings in DVD-SP and checking colorlevels/optimizing my menu graphics in Photoshop... which made it a little better. Now one computer gives OK results in fullscreen-mode, the other one blurs like **** and the third one even gives unbelievalble pixelation in some parts of the picture (seems to dislike the colour red... and its not even a full tone!).
Now with these results, how do you handle complaints of customers who get real bad results on their hard/software??
And generally when authoring DVDs, which is more important for you ... standalone-playback or Computer/Laptop-Playback. This issue seems also pretty important for designing the menus, so I wondered why I rarely read about the problem?!
Karim

First of all thanks a lot for the quick replies.
@theshow:
I know that every project is different... at least it should be. In our case nearly every customer wants one thing that fits all to save costs... that is content-wise as well as for the medium its delivered on. Since DVD is the new standard most customers want DVD. Unfortunately most use the DVDs on their laptops for presentation, but also want to have DVDs to hand out to customers. This way its hard to get an optimal solution.
So in my case... the problem is mainly the menus that the customer wants for interactivity and technical details beside the movie on the DVD. Until I saw those awful pixelations I thought that would be a solution.
Now if I change to another way like clips with other codecs or Flash/Director-based Menus I basically get new problems like customers missing codecs and plug-ins, incompatibility between MAC/Windows machines? So I am trading better quality/resolution for perfect handling and a standardized medium.
Do you often work with any other interactive stuff like Flash/Director or HTML-based solutions in which you include movies? Basically it sounds like DVD-Menus for interactive content are a deadend unless the HD-Standard saves it soon.
@Silal:
Yes, I experienced the problems badly and it reminded me of the awful work webdesign used to be.
I don't know what to improve on my DVD menus, I work in PAL 768*576 compostion resized to 720*576 for the aspect ratio. No fulltone colours or full whites in the menus, no serif fonts and the DVDSP-Settings to software-based rendering and a constant bitrate of 7. Comparing to other menus I am not too far off qualitywise anymore, but the computermonitor display really screws it up and I wonder how to get this message to our customer and avoid in future projects.
BTW... I saw some still menus which looked even worse on computermonitors than my first ones and it looks like motion menus turn out best. Could that be true that motion-menus turn out better in MPEG2 than plain Photoshop-stills??
Karim

Hi-I have an old Adobe Audition 1.5 and I used to be able to hear as I was recording. After updating computer and reloading Adobe Audition 1.5, can no longer hear as recording but only on playback. Please advise.

Hi-I have an old Adobe Audition 1.5 and I used to be able to hear as I was recording. After updating computer and reloading Adobe Audition 1.5, can no longer hear as recording but only on playback. Please advise.

All the monitoring is done through your sound device, not Audition. When you updated your PC, the sound device playback settings would have been reset. One of them includes input socket monitoring, and it's this that you need to reinstate. Since we don't know what sound device you are using, that's as much as we can tell you, except that if it's an internal device, you'll need to open the volume control options and alter it there. This varies between OS versions though...

How to play music simultaneously both on my computer and the remote speaker

I have an existing wi-fi station and one Airport Express, but I can not play music simultaneous both on my computer and the remote speaker. I just can select only one speaker.
My iTunes is the latest Windows version 6.03.5, but I can not see the option of "multiple speakers" on the bottom-right menu. What is the problem? How can I do if I want to play music simultaneously both on my computer and the remote speaker?
Thank you!

On that note, long story short, it was very helpful for me to download the latest firmware. Here's a link for the Windows download. Try this first, if you haven't already. One of the fixes "-Resolves issue with Audio dropout when playing to AirPort Express with AirTunes". Not exactly your issue, but worth a try.
link: http://www.apple.com/support/downloads/airportexpressfirmwareupdate63forwindows. html
I just purchased my AirPort Express, too bad they don't recommend updating firmware in BIG BOLD LETTERS, and who would think to do so if the equipment is brand new...anyways, good luck.

How to play music simultaneous both on my computer and the remote speaker

I have an existing wi-fi station and one Airport Express, but I can not play music simultaneous both on my computer and the remote speaker. I just can select only one speaker.
My iTunes is the latest Windows version 6.03.5, but I can not see the option of "multiple speakers" on the bottom-right menu. What is the problem? How can I do if I want to play music simultaneous both on my computer and the remote speaker?
Thank you!

On that note, long story short, it was very helpful for me to download the latest firmware. Here's a link for the Windows download. Try this first, if you haven't already. One of the fixes "-Resolves issue with Audio dropout when playing to AirPort Express with AirTunes". Not exactly your issue, but worth a try.
link: http://www.apple.com/support/downloads/airportexpressfirmwareupdate63forwindows. html
I just purchased my AirPort Express, too bad they don't recommend updating firmware in BIG BOLD LETTERS, and who would think to do so if the equipment is brand new...anyways, good luck.

Simultaneous synching and charging

I just bought the Dock for my iPad, thinking it might perform the same as my iPod dock, ie connecting to both the PC and the power supply. It doesn't! The only cable (none supplied with the dock) provides an either or connection. Does anyone know of a cable which would perform the simultaneous connection?

AAPL: I don't think you're on the same track as what is needed here. The new Shuffle only has a single headphone jack that doubles as the charger/data connector and the headphone input. A USB -> 110 converter, while handy when you don't have a computer around to charge the unit, is not what we're looking for.
Nathan: I can see you are an Apple employee. Why would Apple create a product with such an enormous flaw in the design? What about those that want to use the new shuffle in their car? Those that are using it as a stand-alone device for things such as hold messages for phone systems? I'm astounded that charging and playback is truthfully impossible.
Is it that it is not possible for the new Shuffle to both charge and playback due to internal wiring or simply that no adapter has yet been developed? I can see that the dock has three stripes on the input pin. Two are obviously for audio (stereo) and the third is for power/data. As looterlbc stated, couldn't another stereo jack be integrated into the dock or a splitter be developed to allow both functions simultaneuously?
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How do I : Transfer camera photos to computer and then E-mail to someone.( Power Shot 160 IS)

HOW DO I : Transfer camera photos taken ( POWER Shot 160 IS) to computer and then E-Mail the out.

Hi BobHopkins!
Thank you for posting.
First, you will need to install the software that came with your camera. Then, connect your camera and power it on in playback. Use the Canon software to download the images from your camera.
Once the images are on your computer, there are a couple of ways to e-mail them. Canon's ImageBrowser EX has an e-mail option in it that you can use simply by selecting the images you want to e-mail, clicking on the Share button, then selecting Email Images.
Otherwise, you can open your favorite e-mail application, then use the appropriate options in that application to attach images to a new e-mail.
Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

HT204291 Is it possibly to have iTunes music play out of both the computer and AppleTV while using Airplay Mirroring for the TV?

Is it possibly to have iTunes music play out of both the computer and Apple TV while simultaneously using Airplay Mirroring to view the computer screen on the TV? Whenever I try, by clicking on 'computer' radial button for volume in iTunes Airplay, the TV automatically reverts to the Apple TV screen. I usually end up using preferences to 'bring back' the audio to the computert while leaving the picture on the tv, but this means i have to suffer from the inferior sound quality of my Macbook internal speakers.

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iOS: Troubleshooting applications purchased from the App Store
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Restore from backup. See:
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Restore to factory settings/new iPod
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Download and playback of video podcasts and vodcasts

Hi Folks,
I have looked at the Classic features manual, looking for info on downloading *video podcasts* and Vodcasts into itunes, and playing them in ipod Classic. I couldn't get from the manual what I needed to understand the video issue . Does anyone have any advice, anything that I should know, or do, before downloading and playing these two types of video? I have read bits here and there about having to chang format of videos for successful download to itunes and playback on Classic. I am not techy enough to understand. (Just as info, I downloaded "Best of YouTube." It promptly locked itunes forever. I couldn't even uninstall itunes and reinstall. I had to create another User on my computer, in order to get itunes again.)
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http://www.apple.com/itunes/store/podcasts.html
http://juicereceiver.sourceforge.net/
http://www.floola.com/modules/wiwimod/
EDIT: Well, Juice is not really an ipod manager, but a podcast manager/receiver

ITunes causing computer and everything running to freeze

When I open iTunes, and start selecting music it freezes my computer, my mouse placement, I mean everything for a couple of seconds
When I change songs, search songs, or do whatever with iTunes it causes this
I've made about 4 threads about this before in the past, and it was never helped
It's extremely annyoying, and I would really want some help

Third-party, meaning not from Apple. For example, I have a plug in installed that allows me to control iTunes playback from my menu bar, without having to go to the application or the mini player. Sometimes if you have a plug-in installed, and you update iTunes but not the plug-in, you can run into some weird issues.
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Simultaneous computation and playback

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