Artificial intelligent assistant

polyphonal

polyphonal, a. Mus.
  (pɒˈlɪfənəl)
  [f. as polyphone + -al, after antiphonal a. and n.]
  = polyphonic a. 1. Hence poˈlyphonally adv.

1946 R. Blesh Shining Trumpets (1949) i. 8 The ultra⁓modern polyphonal and dissonantal school of today. Ibid. iii. 68 A woman's chorus..that sings, part antiphonally, part polyphonally, in undulating lines of chain-fourths.

Oxford English Dictionary

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