Microphone Impedance: What Is It And Why Is It Important? – My New Microphone
PDF] Evaluation of impedance tube methods - A two microphone in-situ method for road surfaces and the three microphone transfer function method for porous materials | Semantic Scholar
About balanced and unbalanced lines
Alctron MA-3 Inline Microphone Signal Booster Preamp with Variable Imp – Astound Sound