V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 16 Old 10-23-16, 12:30 PM
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Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

Quote:
giordy60 wrote: View Post
good morning to all, I am trying to release 5.17 beta 11 and saw that the graph "SPL & phase" to 10khz decade abruptly. is a bug or I have to set something?
Best attach the mdat file for the measurement so we can check it.
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post #12 of 16 Old 10-23-16, 02:17 PM
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Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

here it is

http://dropcanvas.com/03cq4
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post #13 of 16 Old 10-23-16, 03:27 PM
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Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

Everything looks normal, aside from the drop-off at 10 kHz. One possibility is that there is more audio delay when running V5.17 beta 11 because it uses the latest Java runtime for OS X (that is required because the audio routines used by the earlier Java runtime have been deprecated). That might result in the input capture stopping before it has captured the end of the sweep. To check that, make a measurement and go to the scope graph to look at the captured signal, it should drop back to zero after the sweep ends (red trace in the example below), if it is cut off before getting to zero that could be the problem.

V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC-scope.jpg

If that is the problem there are two possible solutions. One is to try reducing the output buffer size to 16k (the setting next to the output device selection on the soundcard preferences). The other is to use the Acoustic timing reference option, which is turned on in the Analysis preferences in the Impulse Response Calculation section and then tick the box to "Wait for timing reference" on the measurement dialog.

V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC-timingref.jpg
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post #14 of 16 Old 10-23-16, 07:12 PM Thread Starter
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Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

Thanks John.

I am in the process of building some panels for my room. I will reset everything next week and try again and report back.
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post #15 of 16 Old 10-24-16, 03:31 PM
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Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

thanks for the answers john, on the screen that I have is missing the option "Wait for timing reference", why?
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V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC-schermata-2016-10-24-alle-22.27.44.png  

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post #16 of 16 Old 10-24-16, 04:34 PM
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Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

First you need to do this part (in bold):
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The other is to use the Acoustic timing reference option, which is turned on in the Analysis preferences in the Impulse Response Calculation section and then tick the box to "Wait for timing reference" on the measurement dialog.
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