Dictionary entry
first harmonic
noun
基波；基谐波
the lowest-frequency component of a periodic waveform; the fundamental frequency.
基谐波
In use
Engineers often refer to the first harmonic as the fundamental frequency of a periodic signal.
The first harmonic of a 60 Hz power line carries most of the energy.
To reduce distortion, the amplifier was tuned to emphasize the first harmonic.
the first harmonic of [noun]
The first harmonic of a square wave is a sine wave.
方波的基谐波是正弦波。
[noun] is the first harmonic
This frequency is the first harmonic.
这个频率是基谐波。
Common mistakes
The first harmonic wave is the lowest frequency.The first harmonic is the lowest frequency.
中文常加“波”字，但英语中 harmonic 本身已指谐波，无需 wave。
First harmonics are important in acoustics.The first harmonic is important in acoustics.
中文中“谐波”可作可数名词复数，但英语中 first harmonic 特指基谐波，用单数且加定冠词。
Connections
Confusing words
- fundamental frequency
- 基频 · 基频是振动系统的最低固有频率，与基谐波（第一谐波）在物理上等价，但基谐波更强调谐波系列中的第一个分量。
- harmonic
- 谐波 · 谐波泛指频率为基频整数倍的任何分量，而第一谐波特指频率等于基频的第一个分量。
Dictionary facts from ECDICT.