noun
pure tone
Technical term in acoustics and music for a sound wave of a single frequency, with no harmonics or overtones.
純音は、正弦波で表される最も基本的な音です。
A pure tone is the most basic sound, represented by a sine wave.
聴力検査では、さまざまな周波数の純音を使います。
Hearing tests use pure tones of various frequencies.