adolfdcosta91/wake-up-word-using-fpga

Wake Up Word Using FPGA

This was a "Wake up word" prediction project it was designed on FPGA development kit Dev DE2i-150. This kit uses Altera Cyclone 4 (FPGA). As FPGA have a constraint on resources the front end ran on MATLAB which did most of the pre-processing, as it is resource hungry but the prediction was done on FPGA. GUI was made in Matlab to capture the wake up word seamlessly from all users.

Requirments

• Microphone
• Computer (Matlab)
• DE2i-150 (Altera Cyclon 4 FPGA)

System block diagram

Operation

Figure below show the GUI interface running on matlab that is used to capture the voice signal from the user.

As soon as you click on capture voice, the program open a one-second window to capture the wake up word. The signal is processed and plotted by MatLab, the data is then sent over the serial channel to the Altera Cyclone 4 FPGA. This signal is stored in the buffer and the model is used to predict the input. The system was designed only to recognise ONE or ZERO.

Processing and Ploting captured signal in MatLab

Results

"ONE" was detected successfully

"ZERO" was detected successfully