Frequency response

It means that when Microphone AY-863 receives sounds of different frequencies, the output signal will be amplified or attenuated as the frequency changes. The most ideal frequency response curve is a horizontal line, which represents the output signal can directly represent the characteristics of the original sound, but this ideal situation is not easy to achieve. Generally speaking, the frequency response curve of the capacitive Microphone AY-863 will be flatter than that of the dynamic one. The common Microphone AY-863 frequency response curve is mostly high and low frequency attenuation, while the middle and low frequencies are slightly amplified.

In the frequency response graph, the horizontal axis is the frequency, the unit is Hertz, and most of the cases are expressed as logarithms; the vertical axis is the sensitivity, the unit is decibels.

Equivalent noise level

The output voltage generated by the sound pressure of the sound wave acting on the microphone is equal to the output voltage generated by the inherent noise of the microphone itself, and the sound pressure of the sound wave is equal to the equivalent noise level of the microphone.