查询词典 audio frequency

Hengyiyuan has three departments: sales department, engineering department and performance tenancy department. Insisting on "quality first and service primary", Hengyiyuan gets clients' trust and recognition with its exquisite technology and considerate service. During the past ten years, Hengyiyuan took part in kinds of important projects construction such as Music Plaza of Beijing Wangfujing Building, Music and Culture Plaza of Beijing Friendly World, Activity Center of Renmin University, Audio System of China Grand Theatre, Multi-function Hall's Lighting and Audio System of Kuangou Holiday Village and Construction Engineering Institute, Conference System of Beijing Nuclear Industry Research Institute, Multi-function Hall's Sound Reinforce System and Simultaneous Interpretation System of China National Coal Group, Multi-function Hall's Lighting and Audio System of Beijing University of Aeronautics and Astronautics, Lighting System of Beijing Conservatory of Music, Lighting System of Beijing Lvdejin Oriental Hollywood Performance Plaza and Multi-function Hall's Lighting and Audio System of Shahe Station and so on. In addition, the performance tenancy department offer sets of lighting, audio and other necessary equipment for the performance program like CCTV Art and Talk Show and Super Voice Girl, and even for the vocal concert by Lunhui Band, Yuquan, Man Wenjun, Han Hong, Liu Suola, Gu Juji, Lin Junjie and Chen Lin etc.

恒艺苑配有销售部、工程部、演艺租赁部这三大部门，始终坚持质量第一，服务至上的宗旨，把先进的技术和产品与客户的实际需要结合起来，把提供富有创意的专业化设计和精品工程与客户的投资回报效益结合起来，用精湛的技术和体贴的服务赢取客户的信任和赞誉，十几年来公司先后承接了北京王府井大楼音乐广场系统工程、北京友好世界音乐文化广场系统工程、北京人民大学活动中心系统工程、中国剧院音响系统工程、宽沟度假村多功能厅灯光、音响系统工程、建筑工程学院多功能厅灯光、音响系统工程、北京市核工业研究员会议系统、中国煤炭进出口集团多功能厅会议扩声、同声传译系统、北京航天航空大学多功能厅灯光、音响系统工程、北京音乐学院灯光系统工程、北京绿德金东方好莱坞演艺广场灯光系统工程、沙河站多功能厅灯光、音响系统工程等众多数不胜举倍受业内瞩目的重点工程，此外演艺租赁部还为CCTV《艺苑风景线》、超级女声、轮回乐队、羽泉、满文军、韩红、刘索拉、古巨基、林俊杰、陈琳等演唱会的文艺演出提供了成套灯光、音响及周边设备。

PYX1-S type signal power supply panel is a special equipment for eight in formation automatic block with audio frequency shift modulated track circuits.It can supply power for signal lighting,track circuit,audio frequency shift relay circuit,approaching circuit,audio frequency shift control and detecting circuit.

PYX1-S型八信息移频电源屏是八信息自动闭塞的配套设备，可为信号点灯、轨道电路、移频继电器电路、接近电路移频控制检测电路提供电源。

The results showed that the echolocation calls of the leaf-nosed bats were constant frequency-frequency modulation signals with 2-3 harmonics and the second one among these three harmonics was its dominant frequency. The constant frequency components of three harmonics (Mean±SD, n=18 ) were 33.3±0.2 kHz, 66.5±0.3 kHz, and 99.4±0.5 kHz, respectively. In examined FTCs of 72 IC neurons, their Q 10 -dB values ranged from 0.5 to 95.4 (9.2±14.6) and the neurons whose best frequency around the dominant frequency had sharp frequency tuning.

结果发现，大蹄蝠回声定位叫声为恒频-调频(constant frequency-frequency modulated，CF-FM)信号，一般含有2~3个谐波，第二谐波为其主频，CF成分频率(Mean±SD，n=18)依次为：(33.3±0.2)、(66.5±0.3)、(99.4±0.5)kHz；电生理实验共获得72个神经元的频率调谐曲线，Q10-dB值的范围是0.5~95.4(9.2±14.6， n=72)，最佳频率(best frequency，BF)在回声定位主频附近的神经元具有尖锐的频率调谐特性。

The article through practice analysizes the local wireless broadcasting system, application of the elements and means of communication technology is being updated, A set of half-automatic broadcasting system controlled by hardware has been designed and assembled; A set of all-automatic broadcasting system controlled by computers has been designed and assembled; A set of emission equipment has been designed; Noise has been lowered in the transmission of audio-frequency so that the audio effect has been raised; new ways of audio-frequency transmission have been developed based on the technology of computer network.

本文通过对局域无线广播系统运行现状的分析和研究，运用电子信息技术的基本原理和方法，设计并自行装配了一套由硬件控制的半自动播出系统；研究开发了一套由计算机软件控制的全自动播出系统；设计了发射装置；通过对音频信号的传播环节进行降噪处理来提高收听品质；基于数字音频技术，开辟新的音频传播途径；并对系统功能的拓展进行探讨。

CPLD is the core of the sampling audio board, which converts the analog audio signal in every channel to digital audio signal, then stores the audio data in the data buffer.

音频采集板以CPLD为核心，主要将各路模拟音频信号转换成数字音频信号，然后存入数据缓冲区。

A telesync is the same spec as a CAM except it uses an external audio source (most likely an audio jack in the chair for hard of hearing people). A direct audio source does not ensure a good quality audio source, as a lot of background noise can interfere. A lot of the times a telesync is filmed in an empty cinema or from the projection booth with a professional camera, giving a better picture quality. Quality ranges drastically, check the sample before downloading the full release. A hellogh percentage of Telesyncs are CAMs that have been mislabeled.

除了使用外置的音源（通常为影院椅子上为听力欠好的人设的耳机孔），TELESYSNC 和CAM的标准是相同的这个直接的音源并不能保证是好的音源，这是它因为受到很多配景噪音的干扰很很长时间候TS是在空的影院录制，或是用专业摄像机在投影室录制，以是图像质量有可能比CAM好质量的升沉有可能很大，在下载前最佳查看SAMPLE很大比例的TS是从CAM纰缪标志成

Results The tinnitus frequency, severity of subjective tinnitus, audiogram types and some items of function test above hearing threshold were significantly different in the five groups (P.05). Specific features of pure-tone test were found in the five groups: tinnitus frequency was low, whole- frequency hearing threshold high, audiogram even, short increment sensitivity index at 1 kHz high and tone decline at 4 kHz low in the syndrome of invasion of wind-heat; tinnitus frequency was high, high-frequency hearing loss common, audiogram abruptly descending, SISI and TD at 4 kHz high in the syndrome of liver-fire up-stirring; subjective tinnitus was loud, audiogram abruptly descending or gradually descending, SISI and 7W at 4 kHz low in the syndrome of stagnation of phlegm-fire; tinnitus frequency was high, subjective tinnitus low, audiogram markedly descending or hill-like, SISI and TD at 4 kHz high in the syndrome of kidney-essence deficiency; average hearing loss was less, audiogram irregular but abruptly descending or notched in most cases, SISI at 4 kHz low in the syndrome of weakness of spleen-stomach.

结果］耳鸣频率、自觉耳鸣程度、听力图类型及部分阈上功能测试指标在各证型间具有显著性差异(P.05)，这些指标在不同的证型中表现出不同的特点：风热侵袭型的耳鸣频率较低，全频听阈升高，听力图多为平坦型，短增量敏感指数得分在1kHz较高，而4kHz音衰值较低；肝火上扰型的耳鸣频率较高，听力损失以高频为主，听力图多为陡降型，4kHz SISI得分及TD值均较高；痰火郁结型的自觉耳鸣响度较大，听力图以陡降型或缓降型为主，4kHz SISI得分及TD值均较低；肾精亏损型的耳鸣频率较高，而自觉耳鸣响度较低，听力图以显降型或山型为主，4kHz SISI得分及TD值均较高；脾胃虚弱型的平均听力损失较小，听力图无一定规律性，但以陡降型或切迹型为主，4kHz SISI得分较低。

It contains: a continuous guide frequency generating module to generate DPCCH non-guide frequency emission estimation value according to input DPCCH de-spread signal and guide frequency emission signal, and combine the estimation value with the DPCCH guide frequency emission signal to generate continuous guide frequency; an average fading factor generating module to generate average fading factor of each DPCCH code according to the input continuous guide frequency and DPCCH de-spread signal; a demodulation signal generating module to generate DPCCH and DPDCH demodulation signals according to the input average fading factors and DPDCH and DPCCH de-expanding signals at the corresponding time.

这种码分多址通信系统的信号解调装置包含：连续导频产生模块，用于根据输入的DPCCH解扩信号以及导频发射信号，产生DPCCH非导频段发射估计值，并将所述DPCCH非导频段发射估计值与所述DPCCH导频发射信号合并，产生连续导频；平均衰落因子产生模块，用于通过输入的所述连续导频以及DPCCH解扩信号，产生DPCCH各个码元的平均衰落因子；解调信号产生模块，用于通过输入的所述DPCCH各个码元的平均衰落因子，以及对应时刻的DPDCH解扩信号和DPCCH解扩信号，产生DPCCH和DPDCH解调信号。

At first, the last low-frequency image after wavelet decomposition can be an initial approximation of the next low-frequency image. It is tested and verified that the last low-frequency image can diffuse and converge to the next low-frequency image. On the other hand, the next low-frequency image can also diffuse and converge to the last low-frequency image. Above process just presents the gradual variation of wavelet decomposition and reconstruction.

首先，用小波分解后下层的低频图像作为对上层低频图像的一个初始近似，验证了由上层低频图像经方向扩散方程可逐渐扩散收敛到下层的低频图像；反过来，由下层低频图像经方向扩散方程亦可逐渐扩散恢复到上层低频图像，这正体现了小波分解与重构的渐变过程。

No additional data for frequency tracking are need, but higher estimation accuracy and low computational complexity can be obtained. Finally, a kind of optimizing joint algorithm for symbol timing, frequency synchronization and channel estimation is proposed. The false alarm probability and miss detect probability of the symbol timing are derived. We proved that the time－frequency offset domain random sequence sliding in the frequency offset direction is orthogonal with the original random sequence, and proposed a new integer frequency offset estimation algorithm. The coarse estimation methods for fractional frequency offset both in AWGN and multipath channels are proposed too.

最后，提出了一种优化的符号同步、频偏估计和信道估计的联合算法，推导了符号同步方法的虚警概率和漏检概率，给出了随机序列在时间－频率偏移域沿频率偏移方向滑动后与原序列近似正交的证明，提出了一种新的在时间－频率偏移域沿频率偏移方向进行滑动相关估计整数频偏的方法，提出了在AWGN信道和多径信道下进行小数频偏粗估计的方法，给出了小数频偏细估计的ML估计结果和利用频域PN序列取值特性的简洁的信道估计结果。

In contrast to the ubiquitous rising-sun-with-rays military flag of the Japanese, Chinese banners and ensigns feature a range of designs.

与遍地都是的太阳军旗不同，中国人的旗帜和徽章设计得各式各样。

From their small corner of Feng's Guangzhou headquarters -- a jumble of pink leashes, squeezable rubber steaks, and plastic doggy Santas for Fido's stocking -- Soleil's designers come up with at least five new products a month.

从Feng 设在广州总部的产品展示柜台上可以看到，Soleil的设计师每月至少设计出5件新产品。