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The article through the analysis of the various processing techniques to voice signal, in use of FFT algorithms and MATLAB language algorithms, uses MATLAB language guide orders generating graphical user interface GUI, achieves achieve real-time repeat, the plus window treatment, Butterworth filter processing and the repeat of processed voice signal and the display of spectrum analysis to voice of signals collection, functions of various window and filter characteristics analysis and display through the menus and controls of interface by the callback function for the operation; Doing them for the purposes of visibleness, audibility, visuality and intuitionistics.

本文通过对语音信号各种处理技术的分析，采用FFT 算法和MATLAB语言算法，运用MATLAB语言的GUIDE命令生成图形用户界面GUI，通过界面菜单和控件的回调函数的编写，实现对采集的语音信号进行实时回放、加窗处理、巴特沃斯滤波处理以及处理后语音的回放和频谱分析及显示，各种窗函数以及滤波函数的特性分析和显示等；达到可视、可听形象直观的目的。形成一套特色化的软件演示系统，操作简单，方便使用，形象直观，可直接用于课堂教学和实验，更一步促进上海大学的多媒体教学改革

In addition, due to the signal system, the user can more easily operate: as long as the necessary clean-up of calcium deposits, the iron will be luminous, and when the iron automatically close when the audible signal will be issued.

此外，由于信号系统，用户可以更容易操作：只要必要的清理存款钙，铁会发光，当铁自动关闭发声时，会发出。

For example:– at 30 m distance an audible signal is given;– at 20 m distance the crane speed is decreased;– at 5 m distance the final stop signal is given.

–在30米处发出可听信号；–在20米处起重机减速；–在最后5米处发出停车信号。

This ultrasonic garbage is obviously not audible, but it can swamp the audble signal and cause the input circuitry to go into non-linear modes of operation, causing the audible signal to be somewhat distorted.

我们显然听不到这些超声"垃圾"，但它可能湮没可听范围到的信号并且让输入电流工作在非线性的模式下，进而使可听范围信号遭到某种程度的扭曲。

Forexample:– at 30 m distance an audible signal is given;– at 20 m distance the crane speed is decreased;– at 5 m distance the final stop signal is given.

–在30米处发出可听信号；–在20米处起重机减速；–在最后5米处发出停车信号。

This experiment is in frequency adjustment X-mitter about that miniwatt frequency adjustment X-mitter operating principle, analyses the debugging making method and their installation, the microphone changes implication into an audible signal, wave an audible signal being modulated as a result of enlarging the day afer tomorrow being in progress to the carrier wave , producing frequency adjustment, by the fact that air wire launching the frequency adjustment electromagnetic wave to the outside , the radio set just can with frequency adjustment meet hear clear implication.

本毕业设计是关于小功率调频发射机工作原理、分析制作方法及其安装调试，在调频发射机中，话筒将话音转化为音频信号，音频信号经放大后对载波进行调制，产生调频波，通过天线向外发射调频电磁波，用调频收音机便可以接听到清楚的话音。

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。

The device further comprises a modulation unit (3) coupled to the heating control unit (2) for producing the control signal in response to an audio signal.

该装置还包括耦合到热控制单元(2)用于响应音频信号产生控制信号的调制单元(3)。

The traditional Givens rotation algorithm involves root computation that needs more hardware resources, a Givens rotation algorithm without root and division computation is presented. And, combined with special structure of input signal matrix, a interference suppression algorithm with low computation is proposed. The narrowband interferences are modeled as autoregressive process and digital signal.

传统Givens旋转算法涉及平方根运算，要消耗较多硬件资源或需要多次循环来实现，为此，提出一种无平方根与除法运算的Givens旋转算法，并结合信号输入矩阵的特殊结构，给出一种低复杂度的干扰抑制算法，将窄带干扰建模为自回归过程以及数字窄带信号。

The averaging and filtering method is used to extract the VEP signal by improving the Signal-to-Noise.

采用累加平均和滤波的方法提高信噪比，用于提取微弱的脑电信号。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。