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by pbazarnik
1188 days ago
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The keywords are: EMI (electromagnetic interference), signal integrity, power integrity. Memcpy can have second order effects due to EMI radiated by CPU, motherboard or coupled via power fluctuations. There are audible and measurable effects of audio system clock jitter which in turn depends on oscillator power quality. Someone mentioned that ethernet has isolation transformers. But isolation transformers have parasitic common mode coupling which can inject the noise to ground plane if interference is strong and device is susceptible enough Watch the EEVBLOG on company which designed scope capable of measuring 1kV common mode signals. (present in EV electronics)
https://youtu.be/I7ppDNLlEL4 Audiophile stuff is a weird mix of real effects and snake oil. |
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