When playing an audio CD using the optical out...
Is the Macbook doing any signal processing at all or is it just piping out the raw digital data from the CD to the receiver?
Jasmes,
Well, the signal is not going directly from the drive to the output, that's certain. It is being processed by iTunes (or Quicktime, which amounts to the same thing). So the question is not whether it is being processed, but rather whether it's being altered during that processing.
My guess would be no, that the signal is being passed by iTunes directly to the output, unless you have the equalizer turned on.
Scott
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Use of optical out on new macmini dual core
I bought a new ~Belkin optical cable. It fits perfectly in my macmini and my bose 321 system. This 321 system has an optical entry. But ....
the description by the mac how to get the mac to use the optical out is not told. It is told to select optical out in the configuration screen under sound. I don't have this option! Ithought the updat of the minimac would have solved the problem, but it didn't. Please help me! I want to use this optical cable, so that I can use the bose system in combination with the minimac!
Kind regards David RietveldWith the exception, as noted of the DVD player, it's System Preferences>Sound>Output. Make sure you used the mini-toslink/optical adapter and that the cable is securely snapped into an INPUT port on your bose system. Everything will be (as noted) auto-detected, and you should see the option:
Digital Out Built - In Output
Select it. If you have multiple adapters for sound (ex a usb audio adapter), then you might want to select the digital output for use only w/ dvd player. Choose where you want your system sound and alerts sent in the other tabs of Sound.
On your bose unit you may have both analog and digital inputs for the same source. I'm not questioning your competence, more my knowledge the equipment you are utilizing. Make sure you select OPTICAL as the input for that source.
For example,
You have buttons for Video 1, Video 2, and DVD. On the back you have a coax digital, a couple of toslink/optical digital connectors and a bunch of RCAs. If you hook up ALL the wires from each device then press Video 1; it MAY just use the analog connections...and since you're ONLY sending digital you won't hear a thing.
If you have 'auto-detect' for analog or digital it probably prioritizes digital over analog and will merely work IF SELECTED. Some systems may do the reverse.
Good Luck,
-j -
Beginning of audio cut off when using digital optical out
Hi all,
This is my first post here since switching to Mac earlier this year.
I'm having problems with the first second or so of audio being cut off when commencing playback using the Mac's digital optical out. This happens with any source of audio in a variety of different applications (e.g. video, iTunes, even system sounds for notifications and the like). I have used a mini Toslink to Toslink optical cable to connect from the Mac's audio out jack to the receiver of my digital speakers (Logitech Z906). Once playback has commenced, audio plays fine; it's just the very first second or so which is usually clipped.
The problem does NOT happen when using the built-in speakers. I've also noticed that if I unplug the cable from the receiver end (leaving it connected at the Mac end) I can see the red LED light shining the optical signal down the cable, but this goes out exactly 30 seconds after audio stops playing. If I start another audio playback within 30 seconds, there is no loss of audio at the beginning, but if I wait longer than 30 seconds (i.e. after the LED has gone out) I encounter the problems with the initial audio being clipped. I therefore suspect that this is an OS issue which is shutting down the digital optical out when audio is not actually playing (presumably to save power or something). I wouldn't have a problem with this if it actually worked properly when audio playback recommences, but it seems that there is a slight delay whilst the optical out service 'wakes up' again and this is leading to the clipped audio.
I've done some searching of the internet (and these support communities) for this problem and there seems to be little information about it. It does seem to affect a few other people though and some have resorted to third party applications or scripts which play silent audio at regular intervals to keep the optical output running permanently (e.g. SoundStay (https://www.macupdate.com/app/mac/39833/soundstay) - no longer maintained and the download link is dead). However, these amount to a kludge at best which treat the symptoms rather than the underlying cause, which I would rather resolve.
I tried to log a support case with Apple in order to have them call me, only to have the system tell me that my support has already expired, despite having purchased the Mac only 4 months ago. It seems that my Apple One-Year Limited Warranty is actually only 90 days when it comes to telephone support. So here I am!
Does anyone else have this problem with optical out, and how can I resolve this? Any help would be gratefully appreciated.
Thank you.Hello kcore66,
Would it be possible for you to upload one of the files in
question so that I can take a look. In Captivate 1.01 there is an
intermittent problem where sometimes the audio is either cut off or
just doesn't play when you publish / preview. To get around this
simply moving the audio object back and forth along the timeline
and then positioning it back in it's original position works 9
times out of 10.
HTH
Regards,
Mark -
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How to use the Optical in on 002r with Logic Studio?
Hi there
i'm trying to figure out a problem that i really can't find a solution,i'm using Logic studio 8 whith Digi 002rack and 7.4 core audio version,my question is how to select in logic the optical IN of the 002r that in my case is connected to my triton rack synth?
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