Recently, many friends have been inquiring about why there is a
broken sound in the microphone recording. What factors are
causing it. Is it true that even high-sensitivity microphone
tests are more prone to distortion?
Before understanding this issue, it is important to have a clear
definition of sensitivity, which is centered around the
efficiency of the sound turning point. Benchmark the voltage of
the output. Whether the sound is broken or not has little to do
with the sensitivity of the microphone. The breaking sound of
the microphone head usually occurs when the voltage directly
supplied to the microphone head is below 1.8V or the bias
resistance of the microphone head increases. Usually, in the
actual circuit debugging process, as long as we reduce the bias
resistance of the microphone and expand the dynamic range of the
microphone. This can greatly reduce the breaking sound of the
microphone. Even shouting at MiTou won't break the sound.
So, the determining factor for sound breakdown is the dynamic
range of the FET working state inside the microphone. The load
resistance matched with the microphone has a high matching
relationship, and the sound will not break even when it is loud.
