The MT8870 DTMF Audio Decoder Speech Decoding Module is an audio decoding module designed for decoding DTMF signals. It features an onboard complex frequency decoder chip for efficient signal processing.
Onboard complex frequency decoder chip MT8870
Onboard voice input interface
Onboard five LED indicators for output state
Basic pins of the chip have been drawn
Compatible with Arduino, Raspberry Pi, ARM MCU and more
