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28th February 2010
| #1 |
| Lives for gear Join Date: Oct 2006 Location: Scotland, UK
Posts: 713
Thread Starter | Testing Audio Equipment This is my first foray into this forum, so apologies if this has been covered (I tried to search but my terminologies maybe wrong). I've built a schematic of a piece of hardware using TINA (designsoft inc) and I'm looking to start testing it. what i am thinking is to test; frequency response phase thd Anything I'm missing that's important? In / out gain perhaps? The piece in question is a hardware Ambisonic decoder (Gerzon's Wireless World design). Any suggestions or help would be great, A
__________________ Mac user; Logic and ProTools. |
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28th February 2010
| #2 |
| Gear Guru  Join Date: Oct 2002 Location: New Milford, CT, USA
Posts: 12,048
|  Phase shift in audio gear is not much of a problem unless it's different for the left and right channels. The main metrics that matter are frequency response, distortion (THD and IMD), and of course noise. You'll also need to test at low and high signal levels. --Ethan
__________________ Ethan's audio book is coming! |
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1st March 2010
| #3 |
| Lives for gear Join Date: Oct 2006 Location: Scotland, UK
Posts: 713
Thread Starter | Thanks Ethan, I think that's exactly what I was looking for!  |
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1st March 2010
| #4 |
| Lives for gear Join Date: Sep 2004 Location: UK
Posts: 4,567
| Hi There is also crosstalk, EMI rejection, PSU noise, gain of course. Matt S |
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1st March 2010
| #5 | |
| Gear Guru Join Date: Oct 2002 Location: New Milford, CT, USA
Posts: 12,048
| Quote:
--Ethan | |
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6th March 2010
| #6 | |
| Lives for gear Join Date: Oct 2006 Location: Scotland, UK
Posts: 713
Thread Starter | Quote:
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7th March 2010
| #7 | |
| Lives for gear  Join Date: Nov 2006 Location: Hickory, MS
Posts: 1,946
| Quote:
#2 Signal to noise or dynamic range #3 linearity (aka distortion) #4 Phase response. #5 Listen to it, and tell Ethan how it sounds..  Have fun.. JR | |
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10th March 2010
| #8 |
| Lives for gear Join Date: Oct 2006 Location: Scotland, UK
Posts: 713
Thread Starter | Thanks for the suggestions John! |
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