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这是本人用Matlab实现音频噪声滤除的试验,要求分析并选用适当滤波器-using Matlab audio noise filtering tests, requirements analysis and the choice of appropriate filter
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一个GUI,低通滤波器,可以滤除音频信号的噪声部分,参数可以自己设定。基本原理采用多种不同滤波器进行比较-A GUI, low-pass filter, to filter out the noise part of the audio signal, the parameter can be set. The basic principles of using a variety of different filters are compared
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对音频进行短时傅里叶变化,维纳滤波后还原,可以滤去20db不相关噪声-Short time Fourier transform of the audio, after the reduction Wiener filter can filter out irrelevant noise 20db
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Remove high frequency audio noise-FIR filter design
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Remove high frequency audio noise-IIR filter design
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采用FFT和低通滤波器的两种语音除噪算法比较,MATLAB编程,附效果图-Using FFT and low pass filter audio noise canceling algorithm for the two compare, MATLAB programming, with a results map
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ISD4004系列工作电压3V,单片录放时间8至16分钟,音质好,适用于移动电话及其他便携式电子产品中。芯片采用CMOS技术,内含振荡器、防混淆滤波器、平滑滤波器、音频放大器、自动静噪及高密度多电平闪烁存贮陈列。芯片设计是基于所有操作必须由微控制器控制,操作命令可通过串行通信接口(SPI或Microwire)送入。芯片采用多电平直接模拟量存储技术, 每个采样值直接存贮在片内闪烁存贮器中,因此能够非常真实、自然地再现语音、音乐、音调和效果声,避免了一般固体录音电路因量化和压缩造成的量化噪声和"金属
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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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语音文件中有单频噪声,设计高频滤波器和低频滤波器进行语音滤波-Audio files with a single frequency noise, high frequency filters and low-frequency filter design for voice filtering
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its a training for students to add a noise in any audio and then filter that specific frequency.
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FIR语音滤波的MATLAB 程序,附带噪声的音频,和消噪后的音频,-MATLAB FIR filtering process voice, with the noise of the audio, and denoising of audio,
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给一个受污染的声音文件用滤波器用matlab消除噪声-Give a contaminated audio files using filter to remove noise
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音频信号的水印设计,以音频信号为载体,将秘密信号嵌入载体音频信号当中,
实现音频信号的水印。采用变换域小波变换(DWT)的技术,将音频信号进行小波变换,提取出低频分量,然后将水印嵌入到音频信号的低频当中。实验当中先在MATLAB 上面进行了仿真实验,并且通过加入噪声以及滤波等进行干扰以此检测了算法的透明性和健壮性,然后利用C 语言进行了测试,最后经
过一些修改,例如加入定时器以及进行中断的处理和加入缓冲在DSP 板子上实现了加入水印的音频声音的播放。-Audio signal water
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用matlab处理音频, 对一段音频加入噪声然后滤除噪声还原, 绘制过程中的频谱图-Matlab deal with audio, for adding some audio noise reduction and filter noise, rendering the process of spectrum
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给音频叠加一个20dB的噪声,再通过一个滤波器滤除噪声-Give a 20 db of noise added to the audio, to filter out noise through a filter
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自适应滤波器代码,利用自适应滤波器对音频号进行滤波,从而实现对音频中噪声滤除,使音频信号更清晰-Adaptive filter code, to filter the audio signal by using the adaptive filter, so as to realize the audio filtering noise in the audio signal, so that more clearly
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Zybo xc7z010 uation board,ssm6203音频编码器,PC端给音频输入,HPH输出口输出过滤噪音的音频,软件:xilinx vivado, vivado HLS, SDK-Zybo xc7z010 uation board, ssm6203 audio encoder, PC end to the audio input, HPH output port noise filter audio software: xilinx vivado, vivado HLS, SD
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LMS自适应滤波去噪算法,里面一个去噪功能模块及一个声音处理模块。可去除音频中的噪声-LMS adaptive filtering denoising algorithm, which is a denoising function module and a voice processing module. Noise in audio
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对于原始音频信号进行高通、低通、带通、带阻滤波(含GUI文件),可以手动设置噪声信号,并对比染噪前和滤波后的信号区别。-For the original audio signal high-pass, low pass, band pass, band stop filter (with GUI files), you can manually set the noise signal, and compares the difference signal noise before transf
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设计音频降噪算法,并用MATLAB仿真实现。
1)读入一段音频后添加噪声,必须包括两种不同的噪声,信噪比:0dB~10dB;
2)分别采用滑动平均滤波器,直接频域滤波,以及谱分析后设计滤波器滤波三种方法实现,并对比效果。
3)给出各种方案的设计依据、代码、频响曲线,以及输入输出对比图。-Audio noise reduction algorithm design, and use MATLAB Simulation.
1) Read after adding noise int
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