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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.
Audio interference - Ground Loop - Power Supply - Issues ...
https://community.volumio.org/t/audio-interference-ground-loop-power-supply-issues/1159
Result: No noise at all. Power supply - HTC 5V/1A or Asus 5V/2A Ethernet connected Amplifier connected to totally separate 5V/1.2A power supply. Result: No noise at all. Realistically I do not want to use a different power supply for the RPi and Amp. I don’t mind using the 12V supply and having two 5V converters if it is reasonably easy to isolate them so there’s no interference …
Power supply causing interference to audio??? | TalkBass.com
https://www.talkbass.com/threads/power-supply-causing-interference-to-audio.1521072/
Also a good way to test for power supply noise is by getting a 9v battery and cable to convert it to fit with pedals power jacks, that way you can just plug the battery in to pedals to see if that helps with the noise which it often does.
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.
Strange audio interference on shared power supply (video ...
https://www.diyaudio.com/community/threads/strange-audio-interference-on-shared-power-supply-video.362295/
If using multiple power supplies is not an issue, I would suggest going that route, it is generally the cheapest and easiest option. In addition, I would also look for an audio cable with lower shield resistance, or bond amplifier ground to audio output ground using a …
Audio interference - Ground Loop - Power Supply - Issues ...
https://forums.raspberrypi.com/viewtopic.php?t=78034
Re: Audio interference - Ground Loop - Power Supply - Issues Sun May 25, 2014 10:56 am In scenarios 1, 2 & 3, the 3.5mm jack is providing the ground for the power supply to the amp, so it isn't surprising that it stays powered.
Audio Myth - "Switching Power Supplies are Noisy ...
https://benchmarkmedia.com/blogs/application_notes/152143111-audio-myth-switching-power-supplies-are-noisy
The power supplies in high power devices, such as audio power amplifiers, can emit very strong magnetic fields. These strong fields tend to limit the noise performance (SNR) of power amplifiers. These magnetic fields can also cause interference with audio products that happen to be too near the amplifier.
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...
Power supply causing audio crackling/whining - Power ...
https://linustechtips.com/topic/283-power-supply-causing-audio-cracklingwhining/
What would your case be?, because if there in nothing between the power supply and the sound card, power supply's electrical noise might be causing some interference with the sound card, even though the Xonar Essence STX has some badass shielding. Also try what windspeed suggested.
Power supply madness – PS Audio
https://www.psaudio.com/pauls-posts/power-supply-madness/
The first I ever heard about power supplies affecting sound quality was in early 1974 when it was suggested that placing a small 1/10th of a microfarad capacitor in parallel with a large electrolytic capacitor made an immediate improvement to sound quality.
Power Supply Noise Reduction - Designer’s Guide
https://designers-guide.org/design/bypassing.pdf
Eden. When we added this bypass capacitors to the stray inductance, the power supply became an under damped resonant circuit. This leads to ringing and noise peaking on the supplies, which may end up on the output. Often times, this problem is severely aggravated by the use of LC decoupling networks. For example, consider the decou-
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