Dynagroove is a recording process introduced in 1963 by RCA Victor that, for the first time, used analog computers to modify the audio signal used to produce master discs for LPs.
dˈaɪnɐɡɹˌuːv ɪz ɐ ɹᵻkˈoːɹdɪŋ pɹˈɑːsɛs ˌɪntɹədˈuːst ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti θɹˈiː baɪ ˌɑːɹsˌiːˈeɪ vˈɪktɚ ðˈæt, fɚðə fˈɜːst tˈaɪm, jˈuːzd ˈænəlˌɑːɡ kəmpjˈuːɾɚz tə mˈɑːdᵻfˌaɪ ðɪ ˈɔːdɪˌoʊ sˈɪɡnəl jˈuːzd tə pɹədˈuːs mˈæstɚ dˈɪsks fɔːɹ ˌɛlpˈiːz.