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Old 8th July 2012, 06:54 PM   #1
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Default 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.

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Last edited by NatureGuy; 8th July 2012 at 07:22 PM. Reason: Clarify Post
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Old 12th July 2012, 01:38 PM   #2
macboy is offline macboy  Canada
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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.
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Old 13th July 2012, 03:46 PM   #3
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Default How about these?

Here is a collection for you...

DTS THX Dolby Demo DVD HD-DVD Blu-Ray Discs
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Old 13th July 2012, 03:49 PM   #4
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Quote:
Originally Posted by macboy View Post
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.
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Old 13th July 2012, 07:32 PM   #5
xmo is offline xmo  United States
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Have you looked at the Audio Precision APx585?
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Old 14th July 2012, 04:09 PM   #6
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Quote:
Originally Posted by xmo View Post
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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