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  Topic Review (Newest First)
10-24-16 04:34 PM
JohnM
Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

First you need to do this part (in bold):
Quote:
JohnM wrote: View Post
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.
10-24-16 03:31 PM
giordy60
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?
10-23-16 07:12 PM
mharrison3360
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.
10-23-16 03:27 PM
JohnM
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.

Attachment 130010

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.

Attachment 130018
10-23-16 02:17 PM
giordy60
Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

here it is

http://dropcanvas.com/03cq4
10-23-16 12:30 PM
JohnM
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.
10-23-16 10:45 AM
giordy60
Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

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?
thanks to those who want to intervene.
10-22-16 09:26 AM
JohnM
Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

I don't know what else to suggest, sorry. I don't have an OS X HDMI multi-ch setup to test with, but with an 8-ch soundcard all behaves as expected with the timing reference appearing on the selected channel (left or right) whichever channel is selected for measurement. Perhaps worth checking your speaker configuration for HDMI to make sure nothing strange has happened to that as a result of using the aggregate device, a typical setup is shown below.

Attachment 129954
10-19-16 09:50 PM
mharrison3360
Re: V.5.17 Beta 11 Acoustic Timing Reference Not Working with HDMI on MAC

I deleted the device and set the drop downs as you you suggested, still no reference sound. It seems to be linked to HDMI connection. When I disconnect the HDMI cable, and route through the mac speakers, I hear the reference sound.
10-19-16 12:26 PM
mharrison3360 I did not delete the device. I will do so tonight and report.
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