# Enabling echo cancellation

Echo cancellation improves the input signal-to-noise ratio during play which improves the performance of operations such as tone detection and speech recognition.

To enable echo cancellation:

Step | Action
1 | Include the following statement in the board keyword file: DSP.C5x[x].Files = echo.m54 where x = the next available index.
2 | Set the appropriate ADI service parameters in your application and in your system.

Refer to the ADI Service Developer's Reference Manual for information about configuring echo cancellation on the AG 2000 board.