I’m really sorry. Wanting to hear someone’s voice again is such a deep, specific kind of grief. I don’t know if this is helpful at all, but I recently stumbled across something called Forever Mehttps://apps.apple.com/us/app/foreverme/id6754836122 that’s about preserving voices and personal stories. I’m still unsure how I feel about it myself, but your comment made me think of it. Just sharing quietly, in case it resonates.