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语音降噪 滤波器 源代码 c语言
,Voice noise reduction filter source code c language
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本次课程设计是用麦克风采集一段语音信号并对该语音信号进行滤波去噪处理。课程设计平台为MATLAB7.1。设计步骤为:首先采集一段语音信号并观察其频谱,然后设计一个汉明窗FIR滤波器,最后对该信号进行滤波。信号在进行滤波处理后,能够听到滤波后的语音信号和滤波前相比明显的变得清晰,基本达到了设计目的。,The curriculum design is a section of a microphone speech signal acquisition and filtering of the sp
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1.录制一段自己的语音信号,并对录制的信号进行采样;
2.画出采样后的语音信号的时域波形和频谱图;
3.给定滤波器的性能指标,采用窗函数法和双线性变换法设计滤波器,
并划出滤波器的频域响应;
4.用该滤波器对采集的信号进行滤波,画出滤波后信号的时域波形和频谱,
并对滤波前后的信号进行对比,分析信号的变化;
5.回放语音信号;
6.设计一个信号处理系统界面-1. Recorded their own voice for some signal, and
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使用matlab 编写的具有调整滤波器的参数来处理输入的语音信号使之具有消除噪声的功能,包括FIR和IIR两种滤波器,使用GUI界面。-Prepared with the use of matlab to adjust filter parameters to deal with input voice signal so that they are the elimination of noise features, including two types of FIR and IIR fil
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Using the function to sample the voice signal and achieve fast Fourier transform in MATLAB, and then get the signal characteristics of the spectrum.Filtering the signal from the filter,and then playback the signal of voice
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递归最小二乘滤波器算法,包含对于单频正弦信号和实际语音信号的处理结果-Recursive least squares filter algorithm, that contains the single-frequency sinusoidal signal and the actual voice signal processing results
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基于不变集多小波的语音特征参数提取研究 用小波变换替代傅立叶变换和梅尔滤波-Based on the invariant set Multiwavelet voice characteristic parameter extraction for research of wavelet transform and Fourier transform alternative Mel filter
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基于MATLAB设计的FIR低通滤波器,并对语音进行了滤波处理-MATLAB-based design of FIR low-pass filter, and a voice filter processing
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输入自己事先录制好的语音信号,该程序实现将语音信号通过FIR低通、高通、带通滤波器后还原出来的语音质量-Enter their own pre-recorded speech signal, the program will realize voice signal through the FIR low-pass, high pass, band-pass filter to restore them after the voice quality
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语音信号的数字滤波处理
加入高斯噪声再滤除,信噪比小于20分贝-Voice signal digital filter handle add further filtered Gaussian noise, signal to noise ratio is less than 20 dB
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:由于许多传统的去噪方法在强背景噪声情况下提取声音信号的能力变弱甚至失效, 提出
应用独立成分分析( I C A) 方法对声音信号进行特征提取, 并证明了这种 I C A 变换能增强语音和音
乐信号的超高斯性. 在此基础上, 应用 I C A基函数作为滤波器, 通过阈值化的去噪方法对含有强高
斯背景噪声的声音信号进行去噪仿真实验. 结果表明, 本方法明显优于传统的均值滤波和小波去噪
方法, 为强背景噪声下弱信号的检测提供 了新的途径.-: As many of the t
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通过STMF,IIR滤波器构建方法实现电话按键声音的功能-Through STMF, IIR filter construction method to achieve the functions of voice call button
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The purpose of this project is to create a different system for processing voice signals and from which we draw useful conclusions about these brands.
More specifically, the system will first filter the voice signal with a pass bandwidth (chebyshe
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本程序为一个用matlab实现的语音滤波程序,能计算并显示语音信号的幅频特性,巴特沃斯低通滤波器幅度和相位响应,引入噪声后的幅频特性,以及滤波后的DFT幅频特性。本程序附有语音文件以供试验。-This program is an implementation using matlab voice filtering procedures, can calculate and display the speech signal amplitude-frequency characteristics
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MATLAB语音滤波,使用MATLAB仿真模拟滤波器对语音信号进行滤波-MATLAB voice filtering, use the MATLAB simulation filter to filter the speech signal
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基于 MATLAB 的语音信号分析与处理的课程设计.录制一段自己的语音信号,并对录制的信号进行采样;画出采样后语音信号的时域波形和频谱图;给定滤波器的性能指标,采用窗函数法或双线性变换设计滤波器,并画出滤波器的频率响应;然后用自己设计的滤波器对采集的语音信号进行滤波,画出滤波后信号的时域波形和频谱,并对滤波前后的信号进行对比,分析信号的变化;回放语音信号-MATLAB-based voice signal analysis and processing of the curriculum. Re
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基于MATLAB的语音滤波器,通过MATLAB使原来的语音信号分别进行带通,高通,低通滤波,得到更好的效果-MATLAB-based voice filter through the MATLAB so that the original speech signal, respectively, for band-pass, high pass, low pass filter, to get better results
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基于MATLAB的语音信号分析及滤波(DSP课程设计说明书) 设计题目、内容及要求 课程设计的题目:基于MATLAB的语音信号分析及滤波。 课程设计的内容:录制一段个人自己的语音信号,并对录制的信号进行采样 画出采样后语音信号的时域波形和频谱图 给定滤波器的性能指标,采用窗函数法和双线性变换设计滤波器,并画出滤波器的频率响应 然后用自己设计的滤波器对采集的信号进行滤波,画出滤波后信号的时域波形和频谱,并对滤波前-Design based on MATLAB voice signal analys
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matlab语音信号滤波处理,可自己设定参数直接运行得出结果-matlab voice signal filter processing can set their own parameters run directly on the outcome of
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基于Matlab的对语音信号采集、处理及滤波器的设计,并使之实现的过程。-Matlab voice signal acquisition, processing and filter design and realization of the process.
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