无线话筒

多媒体教室无线话筒和接收机的任意配对技术

Technique of Random Matching of Wireless Microphone and Receiver in Multi-media Classroom

面向多媒体教室的任意配对数字无线话筒设计

Design of Random Matching Digital Wireless Microphone Oriented Multi-media Classroom

带有扬声器的无线话筒：如果是大房间的话，也许需要两个。

Polycom speaker phone : maybe two ( if a large room ) .

我的无线话筒需要换个电池。

I needed a battery for my wireless microphone .

4频道晶体控制无线话筒接收机

4-channel crystal-controlled wireless microphone receiver

它们的想法遭到广播商和无线话筒制造商的反对，这些人害怕会设备间会相互干扰。

The idea is opposed by broadcasters and makers of wireless microphones , who fear the devices would cause interference .

采用全数字技术传输音频，避免同频干扰，提高无线话筒的实用性。

The machine adopts digital technology transfer audio , avoid with frequency interference , improve the practicability of wireless microphones .

在使用多媒体的时候，需借助无线话筒来进行配合，尤其是在人数比较多的情形下。

When using the multimedia , especially in the circumstance of many persons , it requires the aid of a wireless microphone .

但正当我拿起无线话筒开始发言时，我惊恐地意识到我的扩音器不起作用了。

But as I picked up the wireless microphone and began my speech , I realized in horror that my public address system was silent .

无线话筒是多媒体教室中不可缺少的设备，但是大多数使用模拟音频电路的无线话筒，容易发生串音，而且音质差、功耗大。

Most wireless microphone is composed of analog circuits , which is prone to crosstalk , poor in sound quality and high in power consumption .

实际上，大家聚集在会议中心，对于这天气除了议论一下外，别的就无能为力了。我的无线话筒需要换个电池。

Instead , we gathered at the Convention center , unable to do more about the weather than to talk about it , I needed a battery for my wireless microphone .