frequency modulation [电子] [通信] 频率调制 ; 调频 ; 调频广播 ; 频率灯
frequency modulation synthesis 调频合成 ; 音乐合成
PL Pulse Frequency Modulation 脉冲频率调制
indirect frequency modulation [电子] 间接调频
advance frequency modulation 高级调频 ; 高等调频 ; 高级
pulse frequency modulation control system [自] 脉冲调频控制系统
tamed frequency modulation 平滑调频 ; 缓慢调频
narrow band frequency modulation 窄带档 ; 窄带频率调制 ; 窄频带调频 ; 窄带调频
linear frequency modulation 线性档 ; 线性频率调制 ; 线性调频信号
negative frequency modulation 负极性档 ; 负极性频率调制
Because the frequency modulation isn’t sensitive with the change of the phase, it can overcome the swift of phase and fading of energy which is caused by water channel.
利用频率调制本身对于相位变换不敏感的特性,抑制了水声信道中多途效应引起的相位偏移以及能量衰减。
参考来源 - 基于FPGA的水声通信技术研究与实现Pulse width modulation, frequency modulation as wel as phase modulation are simulated by the system model. These modulating methods are analyzed and their correlation results are compared.5.
4.基于ARMA系统模型对脉冲宽度调制、频率调制和相位调制等方法进行仿真,分析了三种调制方式的传输特性,并比较了各自的相关结果。
参考来源 - 无串扰超声测距系统建模与仿真·2,447,543篇论文数据，部分数据来源于NoteExpress
N a method of transmitting information using a radio-frequency carrier wave. The frequency of the carrier wave is varied in accordance with the amplitude and polarity of the input signal, the amplitude of the carrier remaining unchanged 调频广播 ( abbr: FM) → compare amplitude modulation
The7years 'applicable practices indicate that the frequency modulation technology with dc bus voltage ripples is very effective to suppress acoustic resonances.
7年的使用实践表明，直流脉动电压频率调制技术对抑制声谐振现象十分有效。
Frequency modulation is not possible with polychromatic light.
多色光不可能调制频率。
Through proper adjustment to frequency modulation amplitude, the Kerr-effect-induced bias can be effectively reduced.
通过适当调节两光束的频率调制幅度，可有效地实现克尔效应误差的消除。
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