典型的寿命测试系统包括一台通信分析仪、电源、一个手机控制器、音频测试仪器和一台数字多用表（DMM）。
A typical lifetime test system includes a communication analyzer, power supplies, a handset controller, audio test instruments, and a DMM.
国际移动卫星通信系统为用户提供广泛的和日益增加的语音频带数据和传真业务。
The Inmarst system offers the user a large and growing range of voice band data and facsimile services.
然后介绍了几种经典的音频信息隐藏算法，如最不重要位，相位编码和回声编码，并且将它们用在我们这套系统中实现了隐秘通信。
Then it introduces some classical arithmetic of audio information hiding, such as Least Significant Bit, Phase Coding, Echo hiding. And we use them in our system to realize covert communication.
使用准同步法，在一对usbISO端点上，成功地实现了实时全双工usb音频通信功能，简化了时钟同步系统的设计。
Using the plesiochronous communication model, implement duplex audio communication functions on twain USB ISO endpoints, simplify the design of clock synch system.
整个系统的硬件平台包括DSP核心模块、FLASH存储器、音频CODEC、USB通信等模块。
The whole system's plane includes minimum system of DSP, FLASH storage, audio CODEC and USB communication, etc.
本文研究的是音频信息隐藏隐秘通信系统的设计与实现。
This paper focuses on the design and realization of the covert communication system based on audio information hiding.
本文深入讨论和研究了低比特率通信系统中视音频信号的实时处理及优化技术，并进行了软件实现。
This paper deeply discuss the video and audio real-time processing technology and its optimize technology of low bits rate communication systems. The system has been realized with software.
介绍了基于GPIB总线的计算机与数字仪器之间的通信来实现电台音频救生模块的自动测试系统原理。
The principle of implementing automatic test system of radio audio frequency lifesaving module based on the communication between computer and digital instrument based on GPIB bus is introduced.
为了使电力系统通信设备的呼叫装置更加使用方便工作可靠，我们研制了以按键电话机发出双音频呼叫信号进行选择接收的音频选号装置。
In order to improve the ringing method of telephone used in power systems, a type of selective calling device using audio frequency has been developed.
从系统核心、存储器、视频接口、以太网接口、音频接口等方面介绍了DM642交通信息采集系统。
This paper introduces the DM642 traffic information collection system from aspects of system core, memorizer, video interface, Ethernet interface, and audio interface, etc.
主要讨论了一种使用语音频谱动态特性的倒谱距离测量对通信系统或通信设备进行客观音质评价方法。
This paper studies briefly a distance measure for objective quality evaluation of speech communication channels using instantaneous and dynamic spectral features.
目前OFDM技术已经被广泛应用于广播式的音频、视频领域和民用通信系统。
It has been applied to many fields, such as broadcasting, TV and public communication systems.
系统硬件电路包括音频数字信号源实现声音信号产生、数字声强级控制、多机数据通信、液晶显示和电源等模块单元。
System hardware circuit audio digital signal source achieve this functions: sound signals, sound intensity level control, data communications, liquid crystal display, alarm and power.
随着消费类电子市场的蓬勃发展，片上系统在手持音频设备和无线通信领域得到了广泛的应用。
As fast growing of consumer electronics market, System-On-Chip are widely applied to portable battery powered equipments and wireless communication products.
随着消费类电子市场的蓬勃发展，片上系统在手持音频设备和无线通信领域得到了广泛的应用。
As fast growing of consumer electronics market, System-On-Chip are widely applied to portable battery powered equipments and wireless communication products.
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