The only place you are likely to see a "90 degrees phase shift point" is in an undamped system and there you would hear some terrible, very obvious, ringing. I think you are thinking about basic no-damping spring mass systems where "resonance frequency" is actually the "90 degrees phase shift" frequency
The only place you are likely to see a "90 degrees phase shift point" is in an undamped system and there you would hear some terrible, very obvious, ringing. I think you are thinking about basic no-damping spring mass systems where "resonance frequency" is actually the "90 degrees phase shift" frequency
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