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- voice frequency link 音频链路
- VFT? Voice Frequency Transmission? 音频传输?
- VFT? Voice Frequency carrier telegraph Terminal? 音频载波电报终端?
- VFO? Voice Frequency Oscillator? 音频振荡器?
- In this paper, the voltage mode high frequency link (HFL) inverter technique is researched in detail. 本论文针对电压型高频链功率变换技术进行了系统的研究。
- Cycloconverter was used to realize AC-AC converter, and two carrier PWM approaches were also introduced as a way to implement a medium frequency link. 在逆变器的交-交变频部分，采用双路PWM脉冲，同时，对其工作原理也进行了详尽的分析，作出了仿真结果；
- The invention relates to a method for realizing the radio frequency link receiving share through a switch array in the TDD mode and the device. 本发明涉及一种在TDD模式下利用开关阵实现射频链路收发共用的方法及装置。
- You are also not allowed to communicate on any text or voice frequency in use by pilots and regular ATC. 同时，也不得在正式管制员与飞行员通讯的频率上进行文字和语音通讯。
- In researching computer voice input, analysis of voice frequency is a crucial step. 研究电脑语音输入，分析声音的频率特质是很重要的步骤。
- A high frequency link Push Pull Forward(PPF) type inverter is proposed in this paper,which have the advantages of the Push-Pull DC converter and the high pulse DC link inverter. 本文结合推挽正激直流变换器和高频脉冲直流环节逆变器的优点,提出了一种适用于低压大电流输入场合的推挽正激式高频环节逆变器。
- Spectrograms show Kosik's voice frequency when he makes human sounds is similar to his keeper's. 通过声谱图对比发现，科希克发出的声音频率与饲养员金中干的非常相似。
- In the circuit a cycloconverter is used to realize AC-AC conversion, and two carrier PWM approaches is also introduced as a way to implement a medium frequency link. 在逆变器的交-交变频部分，用双路PWM脉冲进行变频，通过修改控制策略，能对负载侧的能量进行反向传送。
- It is applied in voice frequency decoder and power amplifier of high-end stereo of various fields like MP multi-media, VOIP, MP3, etc. 应用于手机多媒体,VOIP,MP3等众多领域的高端立体声音频编解码器和功率放大器;
- Back to Back Channel Bank The connection of voice frequency and signaling leads between channel banks to allow dropping (i. E. Removing) and inserting (i. E. Adding) of channels. 背对背信息处理单元两个信息处理单元之间的话音频率和信令引导连接,允许对信道进行卸除(即删除)和插入(即添加)操作。
- After compares, a unidirectional power flow mode inverter using high frequency link is selected as the main topology and the inverter is controlled by P87LPC768 that is made by Philips. 经过比较，选用单向电压源高频链逆变器作为逆变电源的主电路拓扑，采用的飞利浦单片机P87LPC768为该电源的主控芯片。
- The novel full-bridge mode inverters with high frequency link are constituted of high frequency inverter bridge, high frequency transformer, cycloconverter, input and output filters. 新颖的全桥式高频环节逆变器,由高频逆变桥、高频变压器、周波变换器以及输入、输出滤波器构成,包括全桥全波式和全桥桥式拓扑。
- Based on an overview of high frequency link (HFL) inverters, the advantages and disadvantages of HFL inverters in some important voltage mode and current mode are discussed in the dissertation. 本文在阐述高频交流环节逆变技术产生和发展的基础上，分析了几种具有代表性的电压源和电流源高频交流环节逆变技术的优缺点。
- The novel full-bridge mode AC/AC converters with high frequency link are constituted of input cycloconverter, high frequency transformer, output cycloconverter, input and output filters. 新颖的全桥式高频环节AC/AC变换器,由输入周波变换器、高频变压器、输出周波变换器以及输入、输出滤波器构成,包括全桥全波式和全桥桥式拓扑。
- VFC? Voice Frequency Cable? 音频电缆?
- VFC? Voice Frequency Channel? 音频信道?
