https://meashiri.github.io/ctf-writeups/posts/202401-irisctf/#spicy-sines
![](https://meashiri.github.io/ctf-writeups/posts/202401-irisctf/2024-01-10-22-15-00.png)
TLDR - We are given an image with an ASK wave form. Transcribe it into digital data and decode it using Manchester ISO 802.4 scheme to get the flag. 