Role of Microphone sensitivity in building an SPL meter or dB meter

1. Why is microphone sensitivity important?
2. What is microphone sensitivity in dB?
3. Is higher sensitivity better for microphone?

Why is microphone sensitivity important?

Microphone sensitivity is the measure of the microphone's ability for converting acoustic pressure into an electric voltage. The higher the sensitivity, the less pre-amplification required to bring the sound to a useable level on the mixer channel. The less the sensitivity, the greater the pre-amplification required.

What is microphone sensitivity in dB?

Microphone sensitivity is typically measured with a 1 kHz sine wave at a 94 dB sound pressure level (SPL), or 1 pascal (Pa) pressure. The magnitude of the analog or digital output signal from the microphone with that input stimulus is a measure of its sensitivity.

Is higher sensitivity better for microphone?

Sometimes a lower sensitivity microphone is better, and other times, a higher sensitivity microphone is better. Low sensitivity mics are generally better for recording isolated, loud sounds. High sensitivity mics are generally better for recording ambient, quiet sounds.