it’s a fairly interesting use of the existing sound in crayta. adjusting the pitch does work. For variable speeds, it may not work as well.
many people start to learn morse code at 5 words per minute and then upwards. 20 was my best on a straight key but i could copy at 35 wpm and send on an electronic key. my side tone is typically set to 500Hz on my radios.
i could see this package used in like escape rooms or some type of puzzle where players have to decode looking at a morse code key next to the audio being played.