無む声せい音おんむせいおんMeanings1nounvoiceless soundlinguisticsLinguistics term for a sound produced without vocal cord vibration, such as /p/, /t/, /k/, /s/. Contrasts with 有声音 (voiced sound).日本にほん語ごの「か」の子し音いんは無む声せい音おんです。The consonant in Japanese 'ka' is a voiceless sound.