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声音的傅立叶变换演示
提供了matlab下的函数接口-voice of the Fourier Transform provides a demonstration of Matlab interface function
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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 。,WAV file analysis using MATLAB. Step One: Select a WAV file as the target of analysis. (Ding.wav) Step
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音频库,包括短时傅里叶变换,信干比计算等-Audio library, including the short-time Fourier transform, signal to interference ratio calculation
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实现了在matlab下音频信号的dct(离散余弦)和fft(傅里叶变换)相对matlab工具箱,有快速准确的效果。-Realized the dct (discrete cosine) of the audio signal in matlab fft (Fourier transform) relative matlab toolbox, fast and accurate results.
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利用MATLAB求128个点和1024个点的离散傅里叶变换-The discrete Fourier transform for the 128 point and 1024 point by MATLAB
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使用matlab语言对一段语音信号进行滤波处理,首先分析时域信号,之后进行傅立叶变换,转换成频域,使用巴特沃斯低通滤波器去除高频部分。-Use matlab language of a voice signal is filtered first time domain signal after the Fourier transform is converted into the frequency domain, using a Butterworth low-pass filter to
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该代码可做快速傅里叶转换以及离散傅里叶转换以及绘制三维时频图(The code can do fast Fourier transform, as well as discrete Fourier transform, and to draw three-dimensional time-frequency map)
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