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Audio Myth - "Switching Power Supplies are Noisy ...
https://benchmarkmedia.com/blogs/application_notes/152143111-audio-myth-switching-power-supplies-are-noisy#:~:text=The%20power%20supplies%20in%20high%20power%20devices%2C%20such,that%20happen%20to%20be%20too%20near%20the%20amplifier.
Power supply noise in audio - Electrical Engineering Stack ...
https://electronics.stackexchange.com/questions/36701/power-supply-noise-in-audio
That something could be the signal-ground on the output cable of your power supply. It could be a screw on the laptop. Or a shield on an unused laptop connector. Or the ground/shield on your audio cable. Make that 3rd prong adapter, but leave the other end bare for the moment.
Audio line noise suppression for home audio:(2) Power ...
https://www.murata.com/en-global/products/emc/emifil/overview/lineup/audio/solution2
Impact of audio circuits on the power supply and countermeasures In many cases, power is supplied from an AC outlet for home audio, and the conductive noise in the power supply cable is regulated under EMC standards. Therefore, it is necessary to prevent noise from leaking into the power supply line during audio playback.
Audio Myth - "Switching Power Supplies are Noisy ...
https://benchmarkmedia.com/blogs/application_notes/152143111-audio-myth-switching-power-supplies-are-noisy
The noise problem is due to the fact that linear power supplies have large transformers and other magnetic components that operate at the AC line frequency (50 Hz to 60 Hz). These line frequencies are audible, and we are all too familiar with the hum and buzz that audio products can produce.
3 Ways to Reduce Power-Supply Noise | Electronic Design
https://www.electronicdesign.com/power-management/power-supply/article/21808839/3-ways-to-reduce-powersupply-noise
Noise is a constant problem in power-supply design. While there are FCC limits on the electromagnetic interference (EMI) radiating out into the air as well as the conducted noise that your design...
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