Re: 答复: S/PDIF audio output
Re: 答复: S/PDIF audio output
- Subject: Re: 答复: S/PDIF audio output
- From: Jeff Moore <email@hidden>
- Date: Thu, 14 Jun 2007 11:54:07 -0700
It depends on the hardware. For example, the Edirol USB Audio box I
have here on my desk always sends the audio data to both it's analog
ports and it's SPDIF port. The same is true if I have one of those
special cables plugged into the output of my G5 iMac. On the other
hand, on my MacPro, the SPDIF output is it's own audio device separate
from the line out and built-in speaker. On a MotU 828, the SPDIF
output is actually addressed via the second output stream it publishes
(which is presented alongside and concurrent with the analog output
stream).
So, how you get data out of the SPDIF port very much depends on what
kind of hardware you are dealing with.
On Jun 13, 2007, at 10:52 PM, ann_chen (陳勇) wrote:
Dear Jeff,
====Yes. If the piece of hardware has a SPDIF output, it will work
fine.===
Need I set some attribute to make the Audio Unit use SPDIF output? I
search the Audio Unit framework, can't find any information about
SPDIF, only IOkit have "kIOAudioOututPortSubTypeSPDIF" about the
SPDIF, how make Audio Unit use SPDIF output, if it’s automatic?
my Audio playback is follow apple's Technical Note TN2097
http://developer.apple.com/technotes/tn2004/tn2097.html
thanks in advance.
Ann
-----邮件原件-----
发件人: ann_chen (陳勇)
发送时间: 2007年5月22日 8:40
收件人: 'Jeff Moore'
主题: 答复: S/PDIF audio output
Dear Jeff,
Thank you very much.
Ann
-----邮件原件-----
发件人: coreaudio-api-bounces
+ann_chen=email@hidden [mailto:coreaudio-api-bounces+ann_chen=email@hidden
] 代表 Jeff Moore
发送时间: 2007年5月22日 2:01
收件人: CoreAudio API
主题: Re: S/PDIF audio output
Yes. If the piece of hardware has a SPDIF output, it will work fine.
On May 21, 2007, at 1:32 AM, ann_chen (陳勇) wrote:
I use Audio Unit to play back LPCM audio. It can support S/PDIF
audio output？
--
Jeff Moore
Core Audio
Apple
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--
Jeff Moore
Core Audio
Apple
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| | >(no subject) (From: ann_chen (��勇) <email@hidden>) |