Description
Adopt max4466 dynamic microphone amplification + ssm2167 voice compression amplifier design, the amplification factor is adjustable. It is suitable for conference speech, intercom and other occasions.
With voice compressor has the following advantages:
1: Compressing the dynamic range of the microphone signal can reduce the level of the peak signal and increase the gain for the low-level signal.
2: Reduce the noise floor of the microphone signal and effectively improve the clarity of the output signal.
Parameter
Working voltage: DC 3v-5v
pcb size 25mm*12mm
Notes:
This is only a small signal amplification, and can not directly drive the speaker, you need to add a power amplifier.