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[Communication-Mobilefir1-2-3

Description: FIR滤波器,3个实现不同的FIR滤波器的C代码,分别包含LP、BP、HP等,具有很强的实用性-FIR filter, three different kinds of FIR filters C code, includes LP, BP, HP, with a strong practical
Platform: | Size: 4255 | Author: 李松 | Hits:

[Communication-Mobilefir1-2-3

Description: FIR滤波器,3个实现不同的FIR滤波器的C代码,分别包含LP、BP、HP等,具有很强的实用性-FIR filter, three different kinds of FIR filters C code, includes LP, BP, HP, with a strong practical
Platform: | Size: 4096 | Author: 李松 | Hits:

[DSP programfir1

Description: FIR滤波器 CCS开发工程文件 头文件 辅助文件 C源程序 -FIR filter to develop CCS project file documents supporting the C header file source
Platform: | Size: 48128 | Author: 高航 | Hits:

[Algorithmcheng-xu

Description: (1)认真复习第七章中用窗函数法和等波纹最佳逼近法设计FIR数字滤波器的原理; (2)调用信号产生函数xtg产生具有加性噪声的信号xt,并自动显示xt及其频谱,如图10.5.1所示; 图10.5.1 具有加性噪声的信号x(t)及其频谱如图 (3)请设计低通滤波器,从高频噪声中提取xt中的单频调幅信号,要求信号幅频失真小于0.1dB,将噪声频谱衰减60dB。先观察xt的频谱,确定滤波器指标参数。 (4)根据滤波器指标选择合适的窗函数,计算窗函数的长度N,调用MATLAB函数fir1设计一个FIR低通滤波器。并编写程序,调用MATLAB快速卷积函数fftfilt实现对xt的滤波。绘图显示滤波器的频响特性曲线、滤波器输出信号的幅频特性图和时域波形图。 (4)重复(3),滤波器指标不变,但改用等波纹最佳逼近法,调用MATLAB函数remezord和remez设计FIR数字滤波器。并比较两种设计方法设计的滤波器阶数。-failed to translate
Platform: | Size: 58368 | Author: 李海龙 | Hits:

[Speech/Voice recognition/combinematlab

Description: 1. 给一段原始的语音信号(可以是自己录制的一段语音),加上一频率为3.8kHz的高频余弦噪声和频率为3.6kHz的高频正弦噪声(幅度自己可以选择),用窗函数设计一滤波器(要求最小阻带衰减为50dB)对加噪后的语音信号进行滤波,画出滤波器的频率响应曲线,画出滤波前后的时域图和频谱图。 需要用到的函数: fir1 用窗函数设计FIR滤波器的函数 2. 用GUI设计一界面(如图1所示)完成如下功能: 1) 输入一语音信号,画出语音信号的时域图和频谱图; 2) 对语音信号加噪处理,画出加噪后的时域图和频谱图; 3) 给定滤波器的性能指标,采用几种不同的方法设计滤波器对加噪信后进行滤波,画出各滤波器的频率响应曲线,画出滤波后的时域图和频谱图。 -1. to some of the original speech signal (which can be a voice you record yourself), plus a cosine frequency of 3.8kHz frequency noise and frequency of 3.6kHz frequency sinusoidal noise (in the range that they can choose), with a window function to design a filter (requires a minimum stop band attenuation is 50dB) after adding noise to the speech signal is filtered, the filter frequency response curve to draw, draw diagrams and time-domain spectrum before and after filtering. Need to use the function: function fir1 with window function design FIR filter design 2. Using a GUI interface (Figure 1) complete the following functions: 1) an input speech signal, the speech signal in the time domain to draw graphs and spectrum 2) adding noise to the speech signal processing, draw diagrams and time-domain plus noise spectrum after 3) to set the filter performance, using several different methods designed to filter letter after adding noise filtering, draw the frequency response curve of each
Platform: | Size: 1024 | Author: longteng | Hits:

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