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运用matlab工具对语音信号处理的几个方面:短时能量、端点检测、和功率谱及短时傅立叶变换特性作了简单的分析。-use Matlab tool for voice signal processing areas : short-term energy and endpoint detection, and the power spectrum and the characteristics of short-time Fourier transform with a simple analysi
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关于信号处理中傅立叶变换的MATLAB函数,可以与FFT进行对比,运算速度比较快。-on Signal Processing Fourier transform function MATLAB, compared with the FFT. Operational speed is faster.
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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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请认真阅读采用MATLAB分析WAV文件。
步骤一:选择一个WAV文件作为分析的对象 。(ding.wav)
步骤三:进行 FFT变换并画频域图形 。
步骤四:进行该声波主要频谱的分析。
步骤五:根据该声音的频谱,反演时域图形 。(有失真)
步骤六:进行付立叶逆变换IFFT并画频域图形 。-Please carefully read the WAV files using MATLAB analysis. Step One: Select a WAV file as the
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一个小波+快速傅立叶变换的人脸识别程序,程序简单,效果好-A wavelet+ Fast Fourier Transform for Face Recognition Procedure
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观测实时模拟信号(语音)的频谱
用音频设备采集一段语音,将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的,应把它分段分析,而且实际运用中的数字信号处理的FFT的点数是有限的,一般只能达到千点。用傅里叶反变换IFFT,从频域恢复信号。画出频谱图和语音波形图。
-Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of
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matlab实现加汉明窗,矩形窗,并对它们进行傅里叶变换,并实现频谱的分析。-matlab realize Jia Hanming window, rectangular window, and they are subjected to Fourier transform, and to achieve the analysis of the frequency spectrum.
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使用matlab合成音乐,用傅里叶级数或傅里叶变换的方法来做,最后用分析得到的吉他的特性来演奏东方红-Matlab music synthesis, using Fourier series or Fourier transform method .And finally use the guitar features formerly analysised to play with DFH
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语音信号采集与频域处理,涉及到MATLAB GUI界面编程 界面友好实用-accquire and process signals of speech with matlab GUI,fourier transform
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导入声音文件,进行快速傅里叶变换,得到声音的频谱。(Import audio files, fast Fourier transform, to get the spectrum of sound.)
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根据短时傅里叶变换原理,计算并显示该语音段的短时幅度谱和功率谱;根据语谱图显示原理,编程实现该语音段语谱图的计算和显示,并尽量多地分析出语谱图包含的语音特征信息,用MATLAB提供的倒谱计算函数,显示该语音段的复倒谱和倒谱(According to the principle of short-term Fourier transform, the short range spectrum and power spectrum of the speech segment are calculat
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