Variation in pitch and stress (intonation); modulation of voice that conveys emotion or meaning in speech.
発音練習で抑揚をつけると自然に聞こえる。
When practicing pronunciation, adding intonation makes it sound more natural.
抑揚のない話し方は退屈に聞こえることがある。
A flat way of speaking without intonation can sometimes sound boring.
彼女の演説は抑揚があって感情が伝わった。
Her speech had good modulation and conveyed emotion.