Instructions: Enter an RTTTL string above. You can play chords by writing notes separated by + in each note section.
For example: d=4,o=5,b=140:8c6+e6+g6,8p,8a6+f#6+e6
Use controls to customize oscillator, filter, pulse width and ADSR envelope.
Click Play to start, Stop to stop. Loop toggle for repeating.
Copy button copies the RTTTL input to clipboard.