The audio decoder has built-in audio frequency filter, and automatic WPM detector! Features: • Encode text to Morse code! • Output Morse code using screen, speaker and flash! • Decode Morse code to text! • Decode Morse code audio in real time! • Customizable WPM and audio frequency for encoder/decoder! • Support decoding common Morse code prosigns! • Dictionary for learning Morse code! • Multiple color theme, in case you get bored with the interface! Have fun! If you enjoy this app, please rate us on App Store, that will help us a lot. Thank you for using Morse Transmitter, we will keep improving our software to bring you better experience!