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-   -   5.1/7.1 Audio Generator (http://www.diyaudio.com/forums/equipment-tools/215812-5-1-7-1-audio-generator.html)

NatureGuy 8th July 2012 05:54 PM

5.1/7.1 Audio Generator
 
I am researching the availability of a certain piece of equipment that I am not sure exists.

The project:

An audio test signal generator that would do the following:

  • Provide internal generated, or accept external generated, basic test tones; pink and white noise and various sweep tones.

  • Output these tones via balanced/unbalanced analog outputs.

  • Encode the tone via DTS Master Audio and/or Dolby True HD to a specific output channel; center, surround, rears, subwoofer and output via HDMI.
The purpose is to individually evaluate the output of each of the 7.1 audio channels and test them from any source. Direct through the amplifier, through a A/V processor and again through the A/V processor with any EQ or room correction applies. Software and microphone to graph the results would be a bonus.

Most A/V processor either show you a graph of what it thinks it will do to the signal or nothing, requiring a leap of faith that it is making the correct adjustments.

If this black box exists, I haven't found it, but would sure like to have it.

__________________

macboy 12th July 2012 12:38 PM

What you actually want is a audio test disc (Blu-ray I suppose). You don't need a fancy piece of equipment to generate and encode the signals in real-time when you can accomplish the task with pre-canned test tones on a test disc. They are difficult, but not impossible to come by.

dudaindc 13th July 2012 02:46 PM

How about these?
 
Here is a collection for you... :rolleyes:

DTS THX Dolby Demo DVD HD-DVD Blu-Ray Discs

NatureGuy 13th July 2012 02:49 PM

Quote:

Originally Posted by macboy (Post 3089725)
What you actually want is a audio test disc (Blu-ray I suppose). You don't need a fancy piece of equipment to generate and encode the signals in real-time when you can accomplish the task with pre-canned test tones on a test disc. They are difficult, but not impossible to come by.

I, probably, own every A/V test disc I am aware of. While they do generate a variety of test tones, they will not interface with the analytical software to properly review the results.

xmo 13th July 2012 06:32 PM

Have you looked at the Audio Precision APx585?

NatureGuy 14th July 2012 03:09 PM

Quote:

Originally Posted by xmo (Post 3091228)
Have you looked at the Audio Precision APx585?

Yes I have and discussed it with their local rep. I am willing to invest a reasonable amount, but not $20k+.


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