Pre-flight playback with a quater of a second of near silent white noise.

barberio · 2012-09-08 15:48

I'd like it if XBMC could pre-flight playback with a quater of a second of near silent white noise.

Some Audio receivers that 'autodetect' their inputs have a tiny bit of lag in waking up. (ex. Teufal Decoderstation 5) This only affects decoded audio, as bitstream/transcoded will of course have a handshake that wakes the decoder, but analogue sound needs to be detected.

The idea would be for XBMC to output a barely noticable amount of white noise to 'wake up' any autodetecting audio decoders as part of the pre-flight on playback of decoded audio.

**DDDamian** · 2012-09-08 15:53

Have you tried the nightlies with AE? It streams silence to try keep connections alive. Note that you would have to add:

Code:

<audio>

  <streamsilence>1</streamsilence>

</audio>

to your advancedsettings.xml file.

barberio · 2012-09-08 16:02

Is that streaming a silent digital stream? Might not work with stereo analogue detection. I'll give it a test when I can.

**DDDamian** · 2012-09-08 16:18

Yes it is silent, and all streams are digital - we cannot output "analogue". If you mean PCM then yes, that's what you'll get.

barberio · 2012-09-08 16:44

Doesn't work on the latest Monthly on my ATV2. The setting appears to do nothing. (And yes, I meant to type PCM because it's over optical connection, but brainstupids and only had one cup of coffee today.)

**DDDamian** · 2012-09-08 16:52

Ahhh sorry barberio - that feature is only for Win/Linux - didn't realize you were on an ATV2

barberio · 2012-09-08 17:40

Is it going to be ported to ATV2, or are there issues with that?

**DDDamian** · 2012-09-08 17:58

Really up to a couple of devs who have been handling the CoreAudio side of things - will canvas them.

tismon · 2012-09-14 17:17

To add onto this question, do you possibly know if it outputs a near-silent stream for analog devices or completely silent that technically doesn't actually produce a sound, but rather does something else to trick the soundcard?
Basically, would this work for analog connections (composite/headphone)?

Thanks

**davilla** · 2012-09-15 04:22

"near silent white noise" ?

barberio Senior Member Posts: 118 Joined: Aug 2010 Reputation: 2	2012-09-08 16:02 Post: #3 Is that streaming a silent digital stream? Might not work with stereo analogue detection. I'll give it a test when I can.
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barberio Senior Member Posts: 118 Joined: Aug 2010 Reputation: 2	2012-09-08 16:44 Post: #5 Doesn't work on the latest Monthly on my ATV2. The setting appears to do nothing. (And yes, I meant to type PCM because it's over optical connection, but brainstupids and only had one cup of coffee today.) (This post was last modified: 2012-09-08 16:46 by barberio.)
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barberio Senior Member Posts: 118 Joined: Aug 2010 Reputation: 2	2012-09-08 17:40 Post: #7 Is it going to be ported to ATV2, or are there issues with that?
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tismon Junior Member Posts: 40 Joined: Jan 2012 Reputation: 0	2012-09-14 17:17 Post: #9 To add onto this question, do you possibly know if it outputs a near-silent stream for analog devices or completely silent that technically doesn't actually produce a sound, but rather does something else to trick the soundcard? Basically, would this work for analog connections (composite/headphone)? Thanks
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davilla Team-XBMC Developer Posts: 10,505 Joined: Feb 2008 Reputation: 58	2012-09-15 04:22 Post: #10 "near silent white noise" ? MediaInfo : http://mediainfo.sourceforge.net/ Do not e-mail XBMC-Team members directly asking for support. Read/follow the forum rules.
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