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语音滤波源代码,基于视频会议中语音编码前滤波,可以有效地消除噪声-voice filtering source code, based on video conference speech coding filter can effectively eliminate noise
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波形和频谱双显示
记录讲话直接进入MATLAB
手动分割讲话波形-创建标签文件
波形编辑-切割,复制或粘贴
共振峰分析-显示共振轨道的F1 , F2和F3
基音分析
过滤工具-语音信号滤波器截止频率
比较工具-比较两个波形的频谱距离使用几种措施
增加噪声-Dual time-waveform and spectrogram displays
Records speech directly into MATLAB NEW
Displays time-a
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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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提出一种有效的语音增强算法,该算法使用重叠相加FF-r滤波器进行谱幅度估计,给出噪声估计的两个均值参数,此参数适用于任何噪声.而且进行噪声估计无需检测语音间隙,无需VAD的运算过程,克服了单信道噪声
压缩算法的缺点.-An effective speech enhancement algorithm using the overlap-add FF-r filter in spectral amplitude estimation, given the noise mean estimate
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lms adaptive filter for removing noise from speech
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lms adaptive filter for removing noise from speech
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对原始语音进行上采样和下采样,分析对比他们的时域图和频谱图。最后对比原始语音、75HZ激励、150HZ激励以及噪声激励下的效果-SOME SIMPLE MANIPULATIONS OF SOUND USING DIGITAL SIGNAL PROCESSING
The original sound and its spectrogram
Downsampling the waveform
downsampling
Upsampling the waveform
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Used on cellular phones to filter out
background noise. Measure the signal to noise ratio of an audio input in realtime. Pass speech but give silence where the input is noise (hiss, snap crackle and pop).
Includes a tutorial on how to use sta
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读入语音信号,加入噪声后将其滤除再还原声音-Adding a pulse noise to an existed speech then filt it with a specified FIR filter.
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Kalman filter function that remove noise from speech
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• Plot the noisy speech signal both in time-domain and frequency-domain.
• 进行含噪语音信号的时频分析
• Design a proper filter to remove noise from the speech signal.
• 设计合适滤波器进行去噪
• Plot the clean signal both in time-domain
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自适应噪声消除滤波器!是采用的语音信号!欢迎大家下载!-Adaptive noise cancellation filter! Is the use of the voice signal! Welcome to download!
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利用维纳滤波消除一段语音信息的噪声,并对消除前后的频谱进行分析-Wiener filter to eliminate the noise of the period of the speech information, and the elimination of the spectrum before and after were analyzed
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Low-pass filters allow the low frequency components of an input signal to pass through while attenuating (reducing) high frequency components. Measurement noise fall into the high frequency range of the signal spectrum, while the underlying process s
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语音信号可视化滤波设计
简单的加躁和滤波,界面设计很傻-Visual speech signal plus noise filter design is simple and filtering, interface design silly
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This document makes an introduction to speech communication, Acoustic Theory of Speech: The Source-Filter Model,Speech Models and Features,
Linear Prediction Model of Speech,Harmonic plus Noise Model of Speech, etc.
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采用winner的语音降噪实现代码,适用于语音和音频系统中,可直接调用。-Speech noise reduction using Winner filter implementation code, for voice and audio systems, can be called directly.
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这是我的adsp的project 维纳滤波在语音增强上的应用,是基于维纳滤波的语音增强的matlab实现,其中包括matlab源码,word文档,以及PPT。并设计了简单的
GUI 对语音信号进行加噪处理,然后再其进行维纳滤波。通过gui可以实时改变加入噪声的参数和维纳滤波器的参数,进行分析。并
有频谱显示和语谱对比显示。-This is my project adsp the Wiener filter applied on speech enhancement is ba
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MATLAB软件平台下,利用函数wavread对语音信号进行采样,记住采样频率和采样点数;
2)画出语音信号的时域波形,对采样后的语音进行fft变换,得到信号的频谱特性;对语音信号分别加入正弦噪声和白噪声,画出加噪信号的时域波形和频谱图;
3)根据对加噪语音信号谱分析结果,确定滤除噪声滤波器的技术指标,设计合适的数字滤波器,并画出滤波器的频域响应;
4)用所设计的滤波器对加噪的信号进行滤波,在同一个窗口画出滤波前后信号的时域图和频谱图,对滤波前后的信号进行对比,分析信号变化;
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该文档为一实际的自适应维纳滤波器设计实验,可用于语音信号消噪与图像滤波,为传统维纳滤波器的改进。-This document is a practical adaptive Wiener filter design of experiments, the speech signal can be used to eliminate noise and image filtering, to improve the traditional Wiener filter.
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