The "ed" ending in "missed" is pronounced as a /t/ sound because it follows a voiceless consonant ("s").
Here's how it works:
* Voiceless Consonants: These are sounds made without vibration of the vocal cords (like "s", "p", "k", "f").
* Voiced Consonants: These sounds are made with vibration of the vocal cords (like "b", "d", "g", "v").
The "ed" ending is pronounced as a /d/ sound after voiced consonants and as a /t/ sound after voiceless consonants.
So, "missed" has the /t/ sound at the end.