monophonic

adjective
🔊/ˌmɒnəˈfɒnɪk/
🔊/ˌmɑːnəˈfɑːnɪk/
(also mono)
(music音乐)
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  1. recording or producing sound that comes from only one direction单声道的Topics Musicc2
    Word Originearly 19th cent.: from mono- ‘one’ + Greek phonē ‘sound’ + -ic.