How to Add Echo Effect to Audio File

1. Download and install Audio Record Edit Toolbox. Launch it with the desktop icon.

2. Click "Open" to select the audio file to process.

3. If you want to add echo to a specific part of the music, you can drag the cursor to select the part and click "Effect - Echo"; if you want to add echo to the whole file, just directly click "Effect - Echo".

4. In the "Echo" window you can adjust the delay time, mix depth and feedback gain as needed. You can also use the presets provided. Click "Preview" to listen to the result. Click "OK" if you are satisfied.

5. Click "File - Save File As" to save the processed file.