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11th February 2012, 04:44 AM
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#1 |
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diyAudio Member
Join Date: Aug 2011
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How to measure THD.
Hi friends,
I'm finding how to know my am plifier performance in term of THD. I used the sound card oscilloscope software then my amplifier is about 0.02% @2w and 0.4% @full power. Are there any another way to do like this with more accurate because of even measured the input signal it shows 0.01%.
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11th February 2012, 04:49 AM
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#2 |
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diyAudio Member
Join Date: Feb 2003
Location: ..
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Have you tried the free demo version of RMAA, 1st in loopback mode to test your soundcard?
RightMark Audio Analyzer. Products. Audio Rightmark here's one RMAA test of a US$120 ESI Juli@: RightMark Audio Analyzer test : Juli@ loop Last edited by jcx; 11th February 2012 at 04:52 AM. |
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11th February 2012, 04:53 AM
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#3 | |
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diyAudio Member
Join Date: Aug 2011
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Quote:
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