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Ceramic Capacitor MLCC solutions for suppressing acoustic ...
https://www.murata.com/en-us/products/capacitor/ceramiccapacitor/library/apps/notepc#:~:text=As%20electronic%20equipment%20becomes%20more%20multifunctional%20and%20quiet%2C,mobile%20phones%20%28smart%20phones%29%2C%20DSCs%2C%20and%20flat-screen%20TVs.
Ceramic Capacitor MLCC solutions for suppressing …
https://www.murata.com/en-us/products/capacitor/ceramiccapacitor/library/apps/notepc
As electronic equipment becomes more multifunctional and quiet, the “acoustic noise” caused by ceramic capacitors, which was not formerly noticeable, has become a major design issue in the power circuits of various devices, such as laptop computers, mobile phones (smart phones), DSCs, and flat-screen TVs.
Noise from Ceramic Coupling Capacitors? - diyAudio
https://www.diyaudio.com/community/threads/noise-from-ceramic-coupling-capacitors.300039/
Can ceramic capacitors pick up noise and insert it into the signal path? Yes, perhaps, if they are high-k ceramics. That is why they are avoided in serious audio amps. However, you have buzz not noise or microphony so unlikely to be what was happening. Could the increase in capacitance be the reason that the hum disappeared? Unlikely.
ceramic - About the audible noise of capacitor ...
https://electronics.stackexchange.com/questions/137134/about-the-audible-noise-of-capacitor
For a capacitor that is say 1 mm in a given dimension a 1 M V m Field would cause expansion by about 1 angstrom (0.1 nm) and probably more than 100 X that. How much of that couples into an audible sound is hard to tell, but US patent # 7689390 B2 uses 100's of nm thick BST ( B a 0.7 S r 0.3 T i O 3) layers to couple electrical and acoustic ...
Selecting capacitors to minimize distortion in audio ...
https://www.ti.com/lit/SLYT796
noise of a complementary metal-oxide semiconductor front end, will not be filtered. Applying digital filtering further down the signal chain will suppress typical 1/f noise. However, it is still difficult to completely eliminate the influence of the ceramic capacitor in the bass region of the audio band. Applications demanding high performance
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