tone of voice

The quality, manner or way an individual speaks.

Japanese Meaning

声の調子 / 口調 / 話し方のニュアンス

When giving feedback, she always considers her tone of voice to ensure it doesn't come across as harsh.

フィードバックをする際、彼女は厳しく聞こえないようにいつも話し方の調子に気を遣っています。

Sense（1）

The quality, manner or way an individual speaks.

You could tell by his tone of voice that he was uncomfortable.

tones of voice

（ plural ）