Spectrum

频谱

A term derived from the study of the physics of sound, and used in acoustic phonetics, referring to the set of acoustic components which identify a complex sound wave. A spectral analysis is a graph in which one axis displays the frequency of each harmonic and the other displays amplitude. Several devices are available to measure and display spectra, but the one most commonly used in phonetics is the spectrograph.

原为物理声学术语，声学语音用来指能识别一个复杂声波的一组声学成分。作频谱分析时，图中一个轴向显示每个谐波的频率，另一个轴向显示振幅。有好几种设备能用来测量和显示频谱，但语音学最常用的是频谱仪。