Usually included with the module, but some circuits use an external earpiece or computer microphone.

Before the circuit can recognize your voice, it must be trained: Voice Recognition System Circuit Diagram

The processor compares the incoming sound frequency and "feature vectors" against templates pre-recorded during a training phase . Usually included with the module, but some circuits

) or using a (like the Arduino Nano 33 BLE Sense Go to product viewer dialog for this item. The most common approach for DIY projects involves an Arduino Uno Go to product viewer dialog for this item. connected to a voice module via serial communication. 1. Essential Components Usually included with the module