Optical Digital Input & XBOX

I have hooked up my XBOX 360 to my computer monitor using the XBOX HDMI output to the monitor's DVI input via a HDMI/DVI adaptor.
Since the monitor obviously doesn't do anything with the audio, I am trying to route the audio to my computer speakers via the Optical Digital input on my Mac Pro. I have the XBOX audio connected this way but for some reason when I go into GarageBand and turn the monitor on (this is the only way I could find to allow the audio input to play straight through to the audio output), I get a lot of buzzing and feedback. The audio from the XBOX is being sent because I can hear it faintly in the background but I cannot figure out why I am getting this feedback.
Has anyone managed to do this successfully? Any ideas?

Hi,
I fell bad about answering a question with a question- but I noticed your comment about "...when I go into GarageBand and turn the monitor on (this is the only way I could find to allow the audio input to play straight through to the audio output)"
I have this problem of not hearing the music inputting at the audio input and tried Garage Band- but still no sound at the audio output. What settings worked for you in Garage Band?
Thanx
Simon

Similar Messages

  • Optical digital input (S/PDIF) problem (sampling rates)

    I have a huge problem with my 2009 iMac's digital input that I didn't run into on my older MacBook running the same OS (10.6.x), and it's driving me nuts!
    Basically, I'm trying to record a digital feed from an ADC hooked up between my hand-built tube amps/turntable and my iMac, with the goal being the transfer of some of my LP records to 48/24 LPCM for archiving and editing. The ADC's output rate is fixed at 48000Hz and cannot be changed. My iMac, however, refuses to lock on to the device rate, instead forcing 44.1kHz in the audio/midi setup. In fact, I can't get it to do anything but 44.1kHz on anything I plug in (even my DAC's passthrough) despite the fact that I need to use 48kHz. The audio is correct for a few seconds, then forces back to the wrong rate again. No matter how many times I try, the computer insists on using the wrong sampling rate, which has rendered impossible any hope of using my iMac as an audio recorder.
    I've tried setting up an aggregate device, but to no avail. Nothing I do seems to work, and since the problem is with Core Audio, any program used to catch the audio records gibberish. Is there a way to force Core Audio to use 48kHz in the terminal? It's not like the computer can't do it, as I get about 2 or 3 seconds of correct audio when changing the sampling rate manually. I just can't get it to stick!

    Seeing the exact same thing here. External digital source is 48kHz, and this Mac Pro Desktop will only stay on that setting very temporarily (for about .10 or .15 seconds) then it reverts back to 44.1kHz. Even if I don't have a signal or even a Toslink cable plugged in to the input.
    (I'm surprised you are getting 2 or 3 seconds of correct audio, when I'm getting about 1/10th that before it reverts back to the wrong sample rate. Maybe related to a buffer size option somewhere?)
    I have tried every known option to reset or re-configure this, and even to the point of creating a new user, resetting PRAM, resetting SMC, etc. I was going to try upgrading to 10.6, thinking maybe it was a 10.5.x problem, but now I'm not sure that will help.
    Had I the choice to set the setting to be 48kHz and lock it in, it should stay on that setting - (even if the chance exists that what I'm getting is not correct.)
    More often than not, I know what I'm doing more than Mac OS does, and I want to force it to do what it needs to.
    There really needs to be a "do it because I told you so" option for most of the Mac audio configuration system. This automatic "the hardware decided to do something for you" stuff is absolutely horrid for a system that is marketed as "Pro". A real "Pro" system would let me edit the configuration once, with the tool (text editor hopefully) of my choice, rather than attempting (and failing) to automate things.
    +1 for another instance of this being "a huge problem" and "it's driving me nuts!"

  • Huge Core Audio issue with Optical digital input (S/PDIF) on MacPro

    Hello to all,
    I just realized that it's just impossible to switch the digital optical input (S/PDIF) on a MacPro to 48kHz, it immediately reswitches to 44.1 !!!
    To reproduce (not sure of the english names, french OS here):
    - launch "Audio MIDI configuration"
    - select "Digital audio input" in Properties
    - try to switch Format to 48kHz / 24bit
    In a few seconds, the format reswitches to 44.1 !!!
    Even if feeding the optical input with a correct S/PDIF signal at 48kHz/24bit, no way to change the sample frequency to something other than 44.1, resulting in wrong tonality or distorted sound.
    Please Apple, fix this ASAP, this is just not usable in a pro or even semi-pro environment !
    Test on Leopard 10.5.8 and Snow Leo 10.6.2. I'm pretty sure it worked with Tiger.
    Bye.

    Thanks Keith, but i don't think Logic users could have a clue on this issue (no pun intended).
    I'm a Pro Tools and Nuendo user, so i'm a bit reluctant to ask in a Logic forum... Too many fanboys there IMHO...
    Thanks anymway.
    Bye.

  • Optical digital audio input does not work

    Hi all,
    I am trying to record some of my old DCC cassettes onto my imac, however, for some reason the optical digital input does not work.
    I have searched everywhere, tried all settings in audio/midi setup.
    I did notice that when I connect the digital cable to the output, the build in audio automatically recognizes it, and switches to 'digital output'.
    Analog input does work fine. I am running a 3.06 GHz intel core 2 duo with mac os 10.6.8. Digital cables are fine too (can play on my receiver).
    Thanks for your help,
    Wouter

    I share your frustration. I record audio tracks into logic using digital optical recording desks.
    I have a phone call appointment with apple tomorrow and will be happy to share any fixes if they find any.
    Steve

  • Optical Digital Audio in

    i have a imac a1208 and in the booklet it says that the line in is an optical digital input, but everywhere i look how to use it says that i only have an optical digital output.whats goin on and how do i use it.

    "Компьютер Apple iMac A1208 (MA590RS/A)" looks like a late C2D 17"
    Audio In / Optical Audio in port
    The Audio In port accommodates both digital optical input and analog audio input. Analog audio line input is accepted through a 3.5mm mini phone jack. The sound input jack accepts line-level stereo signals up to 24-bit stereo 44.1-192kHz sampling rate. It also accepts a stereo miniplug-to-RCA cable adapter for connecting stereo equipment to the computer.
    Optical audio input is SPDIF format and uses a standard Toslink cable with a Toslink mini-plug adapter, accepting up to 24-bit stereo and 44.1-96kHz sampling rate.
    The iMac (Late 2006) also has a built-in microphone near the built-in iSight camera at the top of the computer screen bezel.
    Headphone out / Optical audio out port
    The headphone / line output jack accommodates both digital optical audio output and analog audio output with a 24-bit, 16-96 kHz D/A converter. For analog headphone / line output a standard audio cable with 3.5mm plastic or nylon optical plug should be used.
    17" iMac Intel Core Duo - 1.5GB Ram -   Mac OS X (10.4.9)   - Maxtor 300GB FireWire - Creative Inspire 2.1 - 2G Nano

  • Optical digital audio input

    I have an early 2009 iMac Duo Core 2 with the combo digital audio in/out. I ordered the correct cable which fits perfectly into the back of the iMac. I've plugged the other end into three different audio devices that have digital audio out.
    While I get activity on the input level for the Optical digital-in port in system prefs, it does not come out through the iMac speakers. Other sounds (system alerts, iTunes, etc) play through the speakers but getting the computer to play the digital audio input does not work.

    There's an excellent little piece of software called LineIn from Rouge Amoeba that does exactly what you're looking for, get it from here: http://rogueamoeba.com/freebies/. I was using it for redirecting sound coming in via an optical cable to iMac's digital line-in to my headphones attached to iMac's audio-out. Also works great for outputting anything coming to digital-in out to an external audio receiver using digital-out. My set-up was: PC, Xbox 360, PS3 all connected to Sony's Bravia screen and passing sound through HDMI (plus a Wii attached to Bravia via analog inputs), Bravia's digital audio out connected to iMac's digital-in and then finally iMac analog/stereo-out --> headphones or iMac digital-out to Logitech's Z-5500 receiver's TOSLINK connector. TV's aren't allowed to stream unencrypted AC3/DTS coming in from HDMI to their digital audio out though so only stereo was available in the above setup (connecting a PC/Xbox360/PS3 using an optical cable with TOSLINK and mini-TOSLINK connectors directly to the digital line-in on iMac does enable one to pass through Dolby Digital/DTS to iMac's line-out and to an external receiver). I'm using past tense here becase Apple decided not to include any audio-in functionality whatsoever on the new line of iMacs (late 2012). Still looking for a solution to that problem (a MacBook Alu 13" is doing the sound redirection in the mean time).

  • X-Fi Fatal1ty Pro cannot see 5.1 Dolby Digital input via Optical link (mods, please he

    X-Fi Fatalty Pro cannot see 5. Dolby Digital input via Optical link. I am pumping my Xbox360 through the Digital I/O dongle and every thing works OK using Dolby Stereo, outputing to my 5. analog speakers. However, it does NOT work when choosing Dolby Digital 5.. My SPDIF tab just says unknown input.
    Please help, this is very frustrating...

    Ok, for those who also wanted to know the outcome, I though I'd post.
    I was told that the dongle cannot decode 5. to analog, but the Dri've Upgrade and the Console Upgrade could (at $80/$80 vs. $5).
    Great.
    So what I want to know is this:? what chipset or connection is Creative putting in the Dri've Upgrade and Console Upgrade? It seems to me that the card should be doing the decoding, not the type of optical port. If it's getting the signal, then what is the problem? Is is that the flexijack cannot output/input 5. at all, only stereo?
    Anyway, the Digital I/O dongle is going back, the thing is useless for my purposes. While I can hear 360 games fine, DVD's on it default to 5. if they have that type of audio, and there is no way to switch it to stereo; it gives me only silence then.
    And mods, nothing in my frustration is with you; you seem to be very helpful and responsi've. I just wish the rest of the company would get on the ball.

  • Optical Digital Audio Input on Macbook Pro

    Hi all,
    I am trying to use the optical audio input on my macbook pro (core duo) to record from a (relatively) old DAT recorder. So far, I've had no joy.
    Assuming that the DAT and cable are working (I have done all I can to ascertain that they are), does anyone have any ideas why I am unable to select Digital In from either the Sound Control Panel, or Audi Midi Setup?
    When I put the cable into the output, 'Line In' instantly changes to 'Digital Out' in the sound control panel. I would expect it to do the same for input but it doesn't. At no point am I able to select - in any settings - digital in.
    I have asked at my local Applestore and they are also unaware how to get the input working. Any help would be gratefully recieved.
    Cheers,
    Rob Cowie
    Macbook Pro 15" Core Duo   Mac OS X (10.4.8)   1GB RAM

    Hi,
    The ouput from the DAT recorder is definitely SPDIF, and I've heard reports that it has worked on a G5 tower.
    It's interesting to learn that the name of the input in the Sound Control panel doesn't change when inserting a digital cable... I had assumed it did.
    However, selecting Line In and attempting to record does not work. The DAT plays - I can monitor it - the laptop records, but I get nothing.
    I'm at a loss.... perhaps the port is broken, but the three machines in the applestore behaved in the same way. Perhaps I'm missing a driver, but I doubt it. I haven't messed with Core Audio.
    If you have any more thoughts, please let me know.
    Cheers, Rob C

  • OPTICAL DIGITAL AUDIO INPUT SPECIFICATIONS

    I'm trying to find out what sample rates the digital optical input will accept as OK. I have a mic preamp that has a Spidif output that can select what sampling rate it sends out. Choices are the normal 44.1, 48, & 96K and 88.2 also. The first 3 rated are industry standards. Ideally I would like to set the sample rate output from the preamp to the rate "prefered" by the early 2009 Mac Pro 8 core if there is one, but I'm unable to find any mention of sample rates used by the Mac Pro input circuit.
    The reason I'm asking, is that when I try to set system preferences of sound input, There is absolutely no level indication of an incoming signal when Digital input is selected as you can see in the screen grab below:
    Any help would be appreciated.
    Ken

    Thanks for the tip. I had forgotten completely about that utility. Unforntunately, it didn't shed any light on the problem.
    Even though I'm a longtime music & audio addict I made the mistake of overlooking the connections making good contact. Both the Mic Preamp and the DIgital audio converter had never been used before just like the new SPDIF cable w RCA connectors. I pushed the cable in until I felt resistance but didn't realize it wasn't fully seated.
    After re reviewing my previous steps taken I noticed that the Digital audio converter was not showing a valid source signal. I inspected the connection once again and found I'd made a mistake that many newbies make, not unpluging & repluging connections when chasing down a missing signal.
    Happy trails,
    Ken

  • Optical digital audio input port on MacBook Pro

    I believe that the optical digital audio inputs on the latest MacBook Pros are defective. I am not sure if the problem is with the hardware or the software.
    I use two analog-to-digital converters in my recording studio: the Grace Design Lunatec V3, and the Mytek Stereo96 ADC. Both produce a SPDIF stereo signal with a Toslink output port. I use a Toslink cable with the required 3.5mm adapter.
    Both of these converters work perfectly with my 24" iMac. In mid-December of 2009, I got a 15" MacBook Pro. There was difficulty getting the MacBook Pro to recognize a signal from either converter, and when the signal was recognized, the recordings were crackly, pitch-shifted, off-speed, and sometimes parts of the recording would get repeated. All of the settings were adjusted, including the bit-rate and sampling frequency, as well as the Audio Resolution (in both Garage Band and Twisted Wave).
    I took the MacBook Pro to the Apple Store, and was very pleased with the service there. My MacBook Pro was replaced with a new one. However, when I brought the new MacBook Pro into my studio, there were the same problems.
    At the encouragement of a technician at Apple Care, last weekend I brought one of my converters (the Lunatec V3) to the local Apple Store and made recordings on a number of their machines. The results:
    Perfect recordings on the 27" iMac and the Mac Pro. This is in addition to my own 24" iMac.
    The same problems - dropped connection, crackly noise, shifts in pitch, and repeated phrases - in two 17" MacBook Pros and one 15" MacBook Pro. This is in addition to the two 15" MacBook Pros that I have tried at home.
    I have a case number with Apple Care, but haven't heard back from anyone in a week. I am thinking of just returning the MacBook Pro, but it is a very nice machine in every other way.
    Is this an acknowledged problem at Apple, and can a fix be expected?
    Thanks,
    Mike

    What a great job! I've been enjoying making very amateur "audiobooks" for a young grand-daughter recently (simply using a USB mike plugged into one of the MBPs) and emailing her mother the results. Its a great way of remembering old childhood favourites and inflicting them on (whoops, I mean 'enhancing the education of" ) the next generation. Very amateur, but she really enjoys them, I gather. Doing it for real must actually be quite a buzz.
    A couple more passing thoughts on the original topic. I guess you will have worked through such things, but does it make any difference whether the MBP is running from power or from battery? The "power in" section of the MBP is located pretty close to the optical port circuitry and might contribute to interference, I guess.
    Another possibility might even relate to the proximity of the Mac power adaptor or the computer itself to the other equipment. Have you tried hooking it up to different power outlets, increasing distance between the power block or the computer and the other gear, introducing some shielding, etc etc.
    Finally, there can be an issue in which residual current occurs on the body of the MBP itself when it is hooked up using the "duckhead" unearthed powerplug rather than the three prong earthed power lead. I would imagine this, too, could interfere with sensitive gear. (just thoughts from an old audio buff).
    Cheers
    Rod

  • Audigy 4 Pro digital input 16 - 24

    I have a Sony MDS-JB920 minidisc deck hooked up to my Audigy 4 Pro through the external box. Works fine.
    However, the Minidisc deck allows one to set both the digital input and output to either 6, 20 or 24 bit. As the Audigy 4 Pro is 24 bit, I've set the deck to 24 bit for both in and out. So far no problems. If I watch the settings panel whilst playing a minidisc however, it indicates that the signal coming from the MD deck is 6 bit, although the deck is set to supply 24 bit through the SPDIF out.
    When I put the MD deck on rec mode whilst the PC is supplying audio feed, the MD deck loops it back to the SPDIF input of the Audigy and then the software does display 24 bit signal coming from the MD deck.
    This is very confusing to me, does anyone have an explanation?

    CMSS is an effect used for stereo sounds, to emulate surround sound for them. It has no effect on the DVDs you're playing as you're just outputting the AC3 signal so the speakers can decode it.
    If you're using a digital connection, then CMSS will not have any effect for other sound either, you need to connect through multiple analog connections to get that sound. A standard digital connection (coaxial and optical SPDIF) can only pass over either a stereo PCM signal, or an encoded AC3 stream (like on your DVDs). Normal sound like music or games will only be passed over as stereo PCM, so there is no CMSS effect there.
    If you can connect your amplifier through several analog connections, then you can use CMSS aswell, otherwise your amplifier might have it's own upmix option like ProLogic.
    Cat

  • CD player Toslink optical out to optical digital audio in port. Need  help

    Hello,
    I'm taking the Toslink Optical out of my Sony 707esD CD player into the Audio in/optical digital audio in port of my March 2009 iMac.
    In System preferences>Sound>Input>Digital in Optical digital-in port I see a signal occurring on the input level meter but I do not hear audio.
    Output is headphones port and is working fine from other sources.
    I see a signal input does anyone know how to hear the output.
    Thanks.

    You need the free LineIn app from Rogue Amoeba.
    http://www.rogueamoeba.com/freebies/
    Dah•veed

  • Can't change sample rate for digital input on Mac Pro

    Hello all,
    on my Mac Pro with 10.4.10 I can't change the sample rate for the digital input. Whenever I choose 48000 or 96000 Hz it returns to 44100 Hz after a few seconds. Feeding a 24 bit/96000 Hz signal from an external ADC into the optical input doesn't help. No input signal is available for digital recording software such as Sound Studio or Cubase. After changing the sample rate in audio midi configuration to 96000 Hz the sound can be heard for a few seconds but when the setup returns to 44100 automatically the signal is, of course, lost.
    I've deleted all relevant preferences and restarted with resetting paramter RAM. Still the same. With external hardware such as M-Audio Firewire equipment setting the sample rates works properly.
    Thanks to all for helpful clues.

    Hi,
    when E&M signaling is configured on digital interface like the VWIC is, 2 or 4 wires operation is not applicable because there are no wires at all, and reported only for compatibility with the analog E&M card.
    Consequently, you cannot configure that and it will not make any difference to effect of the connection.
    Please rate post if it helps!

  • Digital Input on iMac

    Hi all,
    I'm currently waiting for my first iMac to be delivered. I want to record my Audient Mico preamp direct into my DAW via s/pdif direct into the iMac, so in the meantime i've ordered this cable:
    http://www.lindy.ie/2m-spdif-digital-optical-cable-toslink-to-mini-optical/35222 .html
    Can anyone confirm if this will work for what I want to do please?

    Hi kessler182
    Yes you may want two, both the iMac's Digital Input and Output are mini 3.5mm.
    http://www.amazon.com/3-5MM-TOSLINK-FIBER-OPTIC-TOSLINK-mini-Toslink/dp/B00006LV F3/ref=sr11?ie=UTF8&s=electronics&qid=1283739190&sr=8-1
    Dennis

  • Combined optical digital audio port

    Combined optical digital audio input/audio line in (minijack)
    Combined optical digital audio output/headphone out (minijack)
    Dumb Question but what exactly does this mean, what types of connections does this port take? only headphone jack?

    It is a jack that does both standard analog, and optical digital, on the one connection.
    You can plug in a standard mini-headphone (1/8") like most iPod/music devices use, including 1/8" to two cable Y adapters for plugging into stereos, etc.
    You can also buy a funky adapter that looks like a standard mini-headphone adapter, but it is plastic and has an optical jack on the back where the cable would usually be. This allows you to connect the MB digitally to any equipment (like a home stereo receiver) that accepts optical input, or plug things like CD players, DVD players, etc. into the MB's input. If you check out the online Apple Store, they sell a Belkin kit that has the adapter with a short optical cable and they have a picture so you can see an example.

Maybe you are looking for