Question: what are the relationship between sound quality and microphone quality?
Answer: The ratio of the analog output voltage or digital output value to the input pressure. High sensitivity means the mic can pick up more sounds. Example -> -57.0 dB re 1 Volt/Pascal (1.60mV @ 94 dB SPL) +/- 2 dB @ 1kHz. The lower the dB value, the more sensitive the mic is.