ðɪ ˈɜːlɪɪst sɚvˈaɪvɪŋ fˈɑːnəvˌɪʒən dˈɪsk dᵻpˈɪkts wˈʌn ʌvðə dˈʌmi hˈɛdz ðæt bˈɛɹd ɛmplˈɔɪd fɔːɹ tˈɛsts.
The earliest surviving Phonovision disc depicts one of the dummy heads that Baird employed for tests.