ðɪs dɪvˈɛləpmənt mˌeɪd tɹˈeɪsɪŋ kˌɑːmpənsˈeɪʃən ˈɑːbsəlˌiːt baɪ ɐbˌaʊt nˈaɪntiːnhˈʌndɹɪd sˈɛvənti, ænd ˌɑːɹsˌiːˈeɪ kwˈaɪətli stˈɑːpt jˈuːzɪŋ ðə tɛknˈiːk.
This development made tracing compensation obsolete by about 1970, and RCA quietly stopped using the technique.