Note: Pins 2 and 3 are often used with the SoftwareSerial library to keep the main hardware serial free for debugging. 3. How the System Works
The processor compares the incoming sound frequency and "feature vectors" against templates pre-recorded during a training phase . Voice Recognition System Circuit Diagram
Usually included with the module, but some circuits use an external earpiece or computer microphone. Note: Pins 2 and 3 are often used
A 5V regulated DC supply is standard for these components. 2. Circuit Diagram Connection Guide Voice Recognition System Circuit Diagram