As I had mentioned in the thread https://minichan.net/topic/121848 where I described remembering the code letters visually, learning them by their sound is a whole other exercise. Many training videos start with unrealistically slow signals, which other people say is not a good idea. If you want to recognize a letter at typical speed, it is said that it is better to be trained to recognize it played at that speed. Your brain is to get used to the signal as a whole sound rather than the individual parts that you do not want to take time to actively think about.
Let me start off with a fun video that uses a cute Japanese voice and a musical beat in the background (which might not be the best way to learn, but it is fun): https://www.youtube.com/watch?v=zGv74GOhFXY
boof (OP) replied with this 1 year ago, 9 hours later, 6 days after the original post[^][v]#1,334,063
Getting a little more formal, here is a fellow introducing you to a training process. Essentially, you would like to learn letters that are each played at a fast speed, but with long enough gaps between letters when you start training so that you have time to realize what you just heard, at least sometimes. As you get better, you would want to just reduce the gap length between letters. https://www.youtube.com/watch?v=VWIKqopZDiA
boof (OP) quadruple-posted this 1 year ago, 1 day later, 1 week after the original post[^][v]#1,334,731
On this page, you can click a letter to immediately hear the Morse code. https://play-morse.lowreal.net/
Click the Text tab to enter a block of text to transform, and click Trainer for organized practice.
boof (OP) quintuple-posted this 1 year ago, 2 days later, 1 week after the original post[^][v]#1,335,028
OK, another such page. The setting Farnsworth compression affects the speed of each letter, while the words per minute setting affects the time delay between letters. The generated sounds include simulated radio static. https://stendec.io/morse/
boof (OP) quintuple-posted this 1 year ago, 2 days later, 4 weeks after the original post[^][v]#1,337,562
The letter S ● ● ● reminds me of Nightflight to Venus by Boney M, with the *clap clap clap* that ends each repetition of the rhythm. https://www.youtube.com/watch?v=hmxivKkDUT0