Intervocalic voicing

/ˌɪntəvəʊkˈalɪk vˈɔɪsɪŋ/

/ˌɪntɚvoʊkˈælɪk vˈɔɪsɪŋ/

a phonological process in which a voiceless consonant between two vowels becomes voiced, typically due to the influence of the surrounding vowel sounds