查询词典 audio

Based on the careful reasearch on digital audio signal, MP3 file ,which has high qulity tone and high compression ratio, finally become the audio format that can be processed and transport by this system .

论文通过对数字音频的深入研究，确定具有低失真和高压缩率的MP3文件作为系统处理和传输的音频文件格式。

LibriVox volunteers record chapters of books in the public domain and release the audio files back onto the net. Our goal is to make all public domain books available as free audio books.

LibriVox 的义工录下公共领域内书籍的章节，然后将语音档案发表於网路上，我们的目标是将所有公共领域内的书都做成免费的有声书。

Line Out jack of the audio output signal without amplification for the access of active speakers or amplifiers; SPK socket built-in sound card output by the audio signal amplifier for the next speaker or passive speaker .

Line Out 插座输出未经放大的音频信号，用于接有源音箱或放大器； SPK 插座输出经声卡内置放大器放大的音频信号，用于接无源音箱或喇叭。

The 5mV of the audio signal which comes from the microphone to linear amplificated by the audio signals amplifier,then mixes with music signals from other sound sources(eg:the tape 、CD) by the hybird amplifier . By the control of the digital volume controller the mixed signal ,then amplificated again by the preamplifier,when integrated power amplifier for idling time realizes the signal enlargement factor respectively is 10、100、1000 times;moreover is capable of delivering 3V of output to a 600%26Omega; load. the amplificate signal makes the loudhailer work at last.

该音频信号放大器能够将来自话筒5mV的音频信号进行线性放大，然后和来自其他音源的音乐信号通过混合放大器来混合，混合后的信号经数字音量控制器对高低频的增益进行提升与衰减，再通过前置放大器放大，当集成功率放大器为空载的时候实现信号的放大倍数分别为10、100、1000倍；另外再实现当负载为600%26Omega；的时候，输出幅度为3V，最后经扬声器发出悦耳的声音。

North seted up the audio-visual education professional institutions of higher learning in 14 subject construction in Nei Mongo Normal University held seminars, and established "northern region of colleges and universities subject collaborative audio-visual education group."

1990年北方地区开设电化教育专业的14所高等院校在内蒙古师范大学召开学科建设研讨会，并建立了&北方地区部分高等学校电化教育学科协作组&。这次会议上，在电教司的支持下，北京师范大学正式提出了&教育技术学专业&的名称及课程体系，引发了热烈的讨论，为教育技术学专业的发展奠定了基础

North seted up the audio-visual education professional institutions of higher learning in 14 subject construction in nei mongo normal university held seminars and established "northern region of colleges and universities subject collaborative audio-visual education group."

概要： 1990年北方地区开设电化教育专业的14所高等院校在内蒙古师范大学召开学科建设研讨会并建立了&北方地区部分高等学校电化教育学科协作组&。这次会议上在电教司的支持下北京师范大学正式提出了教育技术学专业。。。

MAX1999EEI Pinout: 8- to 32-bit and 16- to 32-bit word packing options Programmable wait state options: 2 to 31 CCLK Digital audio interface includes six serial ports, two pre- cision clock generators, an input data port, three programmable timers and a signal routing unit Serial ports provide: Six dual data line serial ports that operate at up to 50 Mbits/s for a 200 MHz core on each data line each has a clock, frame sync, and two data lines that can be configured as either a receiver or transmitter pair Left-justified sample pair and I2S support, programmable direction for up to 24 simultaneous receive or transmit channels using two I2S compatible stereo devices per serial port TDM support for telecommunications interfaces including 128 TDM channel support for telephony interfaces such as H.100/H.110 Up to 12 TDM stream support, each with 128 channels per frame Companding selection on a per channel basis in TDM mode Input data port provides an additional input path to the DSP core configurable as either eight channels of I2S or serial data or as seven channels plus a single 20-bit wide syn- chronous parallel data acquisition port Supports receive audio channel data in I2S, left-justified sample pair, or right-justified mode Signal routing unit provides configurable and flexible connections between all DAI components, six serial ports, an input data port, two precision clock generators, three timers, 10 interrupts, six flag inputs, six flag outputs, and 20 SRU I/O pins Serial peripheral interface Master or slave serial boot through SPI Full-duplex operation Master-slave mode multimaster support Open drain outputs Programmable baud rates, clock polarities, and phases 3 Muxed Flag/IRQ lines 1 Muxed Flag/Timer expired line ROM based security features: JTAG access to memory permitted with a 64-bit key Protected memory regions that can be assigned to limit access under program control to sensitive code PLL has a wide variety of software and hardware multi- plier/divider ratios JTAG background telemetry for enhanced emulation features IEEE 1149.1 JTAG standard test access port and on-chip emulation Dual voltage: 3.3 V I/O, 1.2 V core Available in 136-ball BGA and 144-lead LQFP packages Lead free packages are also available

MAX1999EEI引脚说明： 8 - 32位和16 - 32位字包装选择可编程等待状态的选择：2至31个CCLK数字音频接口包括6个串行端口，两个前643时钟发生器，输入数据端口， 3可编程定时器和一个信号路由单元串行端口提供：六双串口数据线，在高达50 Mbps的操作/为200兆赫的每个数据行每个人都有一个时钟，帧同步的核心秒，和两个数据可以作为任何一个接收器或发射器对左对齐和I2S配对样本的支持下，最多可同时接收或传送24个频道，每使用两个系列的I2S兼容立体声设备配置可编程方向线；港口的TDM通信接口，包括支持128个电话接口的TDM的渠道，如H.100/H.110支持多达12个的TDM流的支持下，每帧128个频道每个压缩扩展每通道的基础上选择在TDM模式输入数据端口提供了一个额外的输入路径的DSP核心配置为I2S或串行数据或7加一个20位宽的SYN -异步的并行数据采集接口通道或8通道；支持接收通道I2S音频数据，左对齐样本对，或右对齐模式信号路由单元组件之间提供所有戴配置和灵活的连接，6个串行端口，一个输入数据端口，两个精密时钟发生器，3个定时器，10个中断，六旗投入，产出6个旗，20曼谷南南区域股的I / O管脚串行外设接口的硕士或奴隶通过SPI串行启动全双工运作主从模式多主机支持开漏输出可编程波特率，时钟极性和第三期合并调制旗/ IRQ线路1合并调制旗/定时器过期线光盘的防伪特征：JTAG的访问与64位受保护的关键允许内存内存可分配给程序访问控制的限制下对敏感地区有一个代码锁相环/遥测分比率为背景的JTAG仿真功能增强的IEEE 1149.1 JTAG标准测试访问端口的软件和硬件多钳各种各样和片上仿真双电压：3.3六/输出，可在1.2 V核心136球BGA封装和144引脚LQFP封装无铅封装，也可

TDA4864 Pinout: 8- to 32-bit and 16- to 32-bit word packing options Programmable wait state options: 2 to 31 CCLK Digital audio interface includes six serial ports, two pre- cision clock generators, an input data port, three programmable timers and a signal routing unit Serial ports provide: Six dual data line serial ports that operate at up to 50 Mbits/s for a 200 MHz core on each data line each has a clock, frame sync, and two data lines that can be configured as either a receiver or transmitter pair Left-justified sample pair and I2S support, programmable direction for up to 24 simultaneous receive or transmit channels using two I2S compatible stereo devices per serial port TDM support for telecommunications interfaces including 128 TDM channel support for telephony interfaces such as H.100/H.110 Up to 12 TDM stream support, each with 128 channels per frame Companding selection on a per channel basis in TDM mode Input data port provides an additional input path to the DSP core configurable as either eight channels of I2S or serial data or as seven channels plus a single 20-bit wide syn- chronous parallel data acquisition port Supports receive audio channel data in I2S, left-justified sample pair, or right-justified mode Signal routing unit provides configurable and flexible connections between all DAI components, six serial ports, an input data port, two precision clock generators, three timers, 10 interrupts, six flag inputs, six flag outputs, and 20 SRU I/O pins Serial peripheral interface Master or slave serial boot through SPI Full-duplex operation Master-slave mode multimaster support Open drain outputs Programmable baud rates, clock polarities, and phases 3 Muxed Flag/IRQ lines 1 Muxed Flag/Timer expired line ROM based security features: JTAG access to memory permitted with a 64-bit key Protected memory regions that can be assigned to limit access under program control to sensitive code PLL has a wide variety of software and hardware multi- plier/divider ratios JTAG background telemetry for enhanced emulation features IEEE 1149.1 JTAG standard test access port and on-chip emulation Dual voltage: 3.3 V I/O, 1.2 V core Available in 136-ball BGA and 144-lead LQFP packages Lead free packages are also available

TDA4864引脚说明： 8 - 32位和16 - 32位字包装选择可编程等待状态的选择：2至31个CCLK数字音频接口包括6个串行端口，两个前643时钟发生器，输入数据端口， 3可编程定时器和一个信号路由单元串行端口提供：六双串口数据线，在高达50 Mbps的操作/为200兆赫的每个数据行每个人都有一个时钟，帧同步的核心秒，和两个数据可以作为任何一个接收器或发射器对左对齐和I2S样本对支持，最多可同时接收或传送24个频道，每使用两个系列的I2S兼容立体声设备配置可编程方向线；港口的TDM通信接口，包括支持128个电话接口的TDM的渠道，如H.100/H.110支持多达12个的TDM流的支持下，每帧128个频道每个压缩扩展每通道的基础上选择在TDM模式输入数据端口提供了一个额外的输入路径的DSP核心配置为I2S或串行数据或7加一个20位宽的SYN -异步的并行数据采集接口通道或8通道；支持接收通道I2S音频数据，左对齐样本对，或右对齐模式信号路由单元组件之间提供所有戴配置和灵活的连接，6个串行端口，一个输入数据端口，两个精密时钟发生器，3个定时器，10个中断，六旗投入，产出6个旗，20曼谷南南区域股的I / O管脚串行外设接口的硕士或奴隶通过SPI串行启动全双工运作主从模式多主机支持开漏输出可编程波特率，时钟极性和第三期合并调制旗/ IRQ线路1合并调制旗/定时器过期线光盘的防伪特征：JTAG的访问与64位受保护的关键允许内存内存可分配给程序访问控制的限制下对敏感地区有一个代码锁相环/分比率背景遥测的JTAG仿真功能增强的IEEE 1149.1 JTAG标准测试访问端口软件和硬件多钳各种各样和片上仿真双电压：3.3六/输出，可在1.2 V核心136球BGA封装和144引脚LQFP封装无铅封装，也可

Eighteen analog inputs to replace external muxing requirements and audio synchronization to ensure video and audio outputs remain synchronized.

投入18模拟取代木星外围条件和音频视频和音频同步以确保维持产出同步。

It features a 2.0 megapixel, progressive-scan CCD sensor, a high-quality megapixel varifocal lens, advanced image processing for crisp images of moving objects, power of Ethernet, video motion and audio detection, two-way audio support, and Internet Protocol version 6 support.

它还配备200万像素，逐行扫描CCD传感器，高像素变焦镜头，移动物体勾边图像的先进图像处理，以太网供电，视频移动和音频侦测，双向音频支持和Ipv6网络协议支持。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。