Rather than repeat everything that appears in that thread, I thought I would just outline the equipment and components I used and how I set it up. Essentially you can discover the harmonic distortion signature and the noise floor of your amplifier.Īs forum member XRK971 details in the first post in the thread, all that is needed at the most basic level is a decent internal PC sound card or external USB Audio interface, some free software, three resistors and some wire. I thought this level of analysis would be beyond my ability and budget, but an interesting thread appeared on recently, concerning a cheap method of measuring distortion. However, I am also curious about the objective measurements of the equipment. I imagine I am typical of many DIY audio enthusiasts in that I build something and hope that subjectively it sounds good.
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