Getting around the limitations of JavaSound on OS X - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 171 Old 02-26-13, 02:53 PM Thread Starter
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Thumbs up Getting around the limitations of JavaSound on OS X

John Reekie has produced a great blog post about how to work around the problems Java has on OS X with audio input from Firewire cards, multi-input USB cards and 48kHz sources. You can find the cure for these JavaSound ills at Room EQ Wizard on the Mac - An Input Workaround. Great work John, and thank you!

Edit 12th September: Here is a related post on using HDMI output with REW on OS X, thanks to EmagSamurai: 8 channel HDMI output from REW on the Mac.

Edit 29th June 2014: Use V5.01 beta 21 or later (available here) for OS X 10.7.3 onwards, removes the need for workarounds.

Last edited by JohnM; 06-29-14 at 06:38 AM. Reason: Added link to beta releases that remove need for workarounds
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post #2 of 171 Old 02-27-13, 07:33 AM
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Re: Getting around the limitations of JavaSound on OS X

Thanks John

If anyone using REW on the Mac with one of these specific cases tries the workaround, please do report back here on how it worked out. Thank you
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post #3 of 171 Old 02-28-13, 09:33 AM
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Re: Getting around the limitations of JavaSound on OS X

I have a 2008 Macbook Pro running OS X 10.8 (Mountain Lion) with a Presonus AudioBox USB. I tried to running REW last night for the first time on the Mac, but couldn't get past the calibration stage. I kept getting Impulse Response and Range errors (I forget the exact wording at the moment). I have no problems at all using the AudioBox USB on my Windows 7 based laptop.

I just came across this blog about Mac/Java and look forward to trying this method out. I'll report my findings once I test it.
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post #4 of 171 Old 03-02-13, 08:18 AM
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Re: Getting around the limitations of JavaSound on OS X

It worked fine with me... Thanks a million!

I had installed today REW 5.01 Beta 13 on my Mac Mini (running under OS X 10.8.2 Mountain Lion). My sound card is a UltraLite-mk3 Hybrid to which I hooked a Behringer ECM8000.

At first, when using REW with the Behringer calibration file, there was no result. I tried to set the level through "check levels" on Preference / Soundcard tab and got only a signal on the "out" display.

I have then tried the "Getting around the limitations of JavaSound on OS X" workaround, which allowed me to see results on the "in" display.

Now I have to understand why I see crazy results... but my room acoustics is far from being simple - hence my quest to analyse it with REW...
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post #5 of 171 Old 03-11-13, 05:34 PM
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Re: Getting around the limitations of JavaSound on OS X

It did work perfectly for me.
I have a MBP13" from 2009 with 10.6.8 on it. The soundcard is a M-Audio Fast Track Ultra and the mic an ECM8000.
I just followed each of the steps, and it worked.

So a big thank you !

Last edited by roubi; 03-11-13 at 05:38 PM. Reason: Correction
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post #6 of 171 Old 03-11-13, 05:36 PM
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Re: Getting around the limitations of JavaSound on OS X

Quote:
roubi wrote: View Post
It did work perfectly for me.
I have a MBP13" from 2009 with 10.6.8 on it. The soundcard is a M-Audio Fast Track Ultra and the mic and ECM8000.
I just followed each of the steps, and it worked.

So a big thank you !
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post #7 of 171 Old 03-12-13, 04:52 AM
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Re: Getting around the limitations of JavaSound on OS X

roubi and pat17, glad it worked for you. I was wondering if there was an extra (half) step needed to set the soundcard to 44.1kHz, but it doesn't seem to be needed (I'm assuming at this point that REW/JS does it). Thank you for posting your result
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post #8 of 171 Old 03-12-13, 04:56 AM
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Re: Getting around the limitations of JavaSound on OS X

I actually changer the frequency setting in my fast track ultra control panel to 44.1, but I didn't try leaving it at 48000. Everybody at the same frequency can not be wrong !
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post #9 of 171 Old 03-17-13, 05:55 AM
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Re: Getting around the limitations of JavaSound on OS X

Thank you very much John

This post helped me get the system working. I use an RME Fireface UC USB interface.

Your REW software is great!

Arnau Olivé
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post #10 of 171 Old 04-21-13, 08:01 AM
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Re: Getting around the limitations of JavaSound on OS X

Im working with a 2007 MacBook (yeah, I know, time for a new computer -- but a solid state hard drive and software updates to 10.7.5 have kept it viable).

Im very new into the measurement game. I have a Behringer UCA202 and a UMIK from miniDSP. Since I only have the problem with a 48kHz in put device, do I need to load all of the software discussed in the blog post? If I load the software discussed, do I leave REW input set to 44.1kHz?

Thanks for the help!
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