This is the 4178th most frequent Catalan word.
enregistrades
"Enregistrades" means "recorded" in English.
Here, 'enregistrades' is used as a past participle adjective derived from the verb 'enregistrar', meaning 'to record', describing the conversations.
Les converses enregistrades formen part de l'evidència.
The recorded conversations are part of the evidence.
In this case, 'enregistrats' (feminine plural 'enregistrades') is used as a past participle adjective matching the gender and number of 'programes', indicating that the programs have been recorded.
Els programes enregistrats són accessibles a la biblioteca.
The recorded programs are accessible in the library.
Here, 'enregistrades' is functioning as part of the passive voice construction with the verb 'han estat' (have been), signifying the action of recording was performed on the data.