non-vocal       
adjective (also nonvocal) uk/ˌnɒnˈvəʊ.kəl/ us/ˌnɑːnˈvoʊ.kəl/
 非声音的
not relating to or produced by the voice, either in singing or speaking
  The non-vocal tracks on her new album have been less well received.
 It is interesting to observe the non-vocal signals used by the chimpanzees to communicate. 观察黑猩猩用来交流的非声音信号很有趣。 
 - More examples
 - They will perform his only non-vocal work, a piece for piano and violin, this evening.
 - She had some very distinctive nonvocal means of expressing emotion, especially her trademark eye-roll.
 - In a surprising change of musical direction, he released a non-vocal jazz album.