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Description: MAX293-MAX297滤波器（椭圆滤波器）的技术文档（资料）
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Size: 325250 |
Author: 徐钧 |
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Description: 必用的C程序,单片机实现滤波器的方法-Procedures must be used in C, single-chip filter methods realize
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Size: 18432 |
Author: 徐钧 |
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Size: 324608 |
Author: 徐钧 |
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Description: 本文通过对男性和女性声音的语音特征的研究，发现男女声的基音频率存在较大的差异，并设计了基于基音频率分析的男女声识别系统。男女声识别系统由以下三个模块电路构成：话筒放大器，低通滤波器，半波整流电路，单片机测量控制模块。话筒放大器采用NE5532P音前置芯片，对语音信号进行放大；八阶低通滤波器MAX293完成基音信号的提取；单片机STC12C5410AD实现频率测量和控制输出功能。经仿真与电路实测，男女声的识别效果良好。-In this paper, the voices of male and female voice characteristics of the findings of a study of the fundamental frequency of the sound of men and women there is a big difference, and the design of frequency analysis based on the pitch of the voice recognition system for men and women. Voice Recognition System for men and women from the circuit the following three modules: the microphone amplifier, low-pass filter, half-wave rectifier circuit, single-chip measurement control module. NE5532P sound using the microphone pre-amplifier chip amplification of voice signals eight MAX293-order low-pass filter to complete the extraction of pitch signal STC12C5410AD single-chip realization of the frequency of measurement and control output. By circuit simulation and measurement, the identification of male and female voices well.
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Size: 176128 |
Author: 黄增华 |
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Description: ：简介了研制的随机振动信号处理虚拟仪器系统的组成。叙述了其中的抗混滤波器的作用与要
求，并在分析8 阶低通椭圆开关电容滤波器（MAX293 ）性能的基础上，研制了基于MAX293 的抗混滤
波器。尤其对遇到的“共振”现象作出了理论分析及实验验证，同时给出了解决方法。该抗混滤波器具
有电路简单、变带宽方便、过渡带衰减迅速等优点-The composition of the developed virtual instrument system of processing a random
vibration signal is introduced. The action and demand of the anti alias filter in the system are
recounted. After analyzing the 8-order low pass elliptic switched capacitor filter (MAX293), the anti
alias filter is developed based on it. Specifically, the“ resonance”phenomenon is analyzed theoretically
and the analysis is proved by the experiment. The“ resonance”is avoided. The anti
alias filter has the performance of the circuit being simple, the change of the pass band convenient,
and the attenuation of the transition band sharp
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Size: 48128 |
Author: 张雨 |
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Description: 椭圆低通滤波器手册 MAX293 可以根据抗混时钟改变滤波F-Elliptic low-pass filter manual MAX293 clock change according to the anti-aliasing filter F
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Size: 324608 |
Author: zhangliang |
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