- 简谐波 jiǎnxiébō harmonic wavea simple harmonic wave or sine wave characterized by a single frequency and a sinusoidal profile
- 基谐波 jīxiébō fundamentalthe lowest frequency of a periodic waveform or the first harmonic component of a complex wave
- 总谐波失真 zǒngxiébōshīzhēn total harmonic distortion(acoustics) total harmonic distortion (THD)