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Description: 离散正弦变换程序-discrete sine transform procedures
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Size: 1565 |
Author: 飞虎 |
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Description: 离散正弦变换程序-discrete sine transform procedures
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Size: 1024 |
Author: 飞虎 |
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Description: 对正弦信号进行FFT变换 画频谱图，进行频谱分析，可以计算出信噪比-Sinusoidal signals of paintings transform FFT spectrum chart, spectrum analysis, signal to noise ratio can be calculated
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Size: 1024 |
Author: 左晓伟 |
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Description: 用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图
-Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their respective time-domain waveform of Figure 2. FFT to transform, showing their frequency spectrum, including sampling rate, frequency, data length of 3-on-demand. Make the rms signal of the three maps, power maps, as well as the number of root-mean-square map 4. Fourier Transform IFFT with the restoration of signals, and displays the sinusoidal signal the resumption of time-domain waveform
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Size: 1024 |
Author: river |
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Description: 里面有一对定点FFT和IFFT算法，Hanning window，内含有1024-point正弦系数（已进行定标），可支持2^n(n<=10)点的FFT/IFFT变换-There are a pair of fixed-point FFT and IFFT algorithm, Hanning window, containing 1024-point sine coefficient (calibration has been carried out), can support 2 ^ n (n <= 10) point FFT/IFFT transform
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Size: 147456 |
Author: haoding |
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Description: 1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图
-1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their respective time-domain waveform of Figure 2. FFT to transform, showing their frequency spectrum, including sampling rate, frequency, data length of 3-on-demand. Made of the three signals in root-mean-square maps, power maps, as well as the number of root-mean-square map 4. Fourier Transform IFFT with the restoration of signals, and displays the sinusoidal signal the resumption of time-domain waveform
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Size: 4096 |
Author: 白杨 |
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Description: General Purpose FFT (Fast Fourier/Cosine/Sine Transform)
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Size: 1024 |
Author: yoonsik |
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Description: 实现正弦波的傅里叶变换，并且画图 频谱图-The realization of the Fourier sine transform, and spectral graph drawing
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Size: 7168 |
Author: 王巍 |
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Description: 继 Discrete Cosine Transform: Algorithms, Advantages, Applications (K. R. Rao and P. Yip) 之后的一本关于离散余弦变换(DCT)的快速实现算法的最新专著. 本书第五章“Integer Discrete Cosine/Sine Transforms”关于DCT整数近似实现写的非常详细和精彩, 很方便大家编程实现. 值得一提的是本书的第一作者Vladimir Britanak 一直在从事DCT, 尤其是改进的离散余弦变换(MDCT)的快速算法的研究.-This book, which is written very carefully, is a new monograph of Discrete Cosine Transform (DCT).The fifth chapter about the Integer Discrete Cosine/Sine Transforms is especially wonderful.
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Size: 2693120 |
Author: 伍家松 |
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Description: 信号频谱分析
1. 观测已知方波信号、正弦波信号的频谱
分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。
2. 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-Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. 2. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum
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Size: 64512 |
Author: benny |
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Description: 信号频谱分析
1. 观测已知方波信号、正弦波信号的频谱
分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。
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-Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum
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Size: 94208 |
Author: benny |
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Description: Fast Fourier/Cosine/Sine Transform
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Size: 5120 |
Author: Alex |
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Description: Fast Fourier/Cosine/Sine Transform
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Size: 5120 |
Author: Alex |
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Description: this file is about finding Fast fourier transform for given sine wave using FFT statement.
i. with zero padding
II. without zero padding
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Size: 1024 |
Author: mohanrajan |
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Description: Frequency Analyzer: There is a white vertical line moving from left to right. It leaves behind a colorful trace. The colors correspond to the intensities of various components of the sound. For instance, if you whistle into the microphone a pure sine wave of the frequency 1 kHz (you can easily learn to do it using the feedback from the Frequency Analyzer), the Fourier transform will have a sharp peak at 1 kHz. You ll see the program draw a thin line, probably red or yellow, depending on the volume, at the height corresponding to 1 kHz. If you lower the pitch of your whistle, the line will move downwards.
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Size: 41984 |
Author: Aleksey |
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Description: 在“空间域”文件中，函数有很多，包括正弦变换均衡，平滑线性滤波，锐化滤波，锐化滤波边缘增强，频域指数高/低通滤波，巴特沃斯滤波，文件名为相应拼音。-In the "space domain" file, functions, there are many, including sine transform equilibrium, smooth linear filter, sharpen filter, sharpen filter strengthen edge, the frequency domain index high/low pass filtering, bart wo filter, file called corresponding pinyin.
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Size: 95232 |
Author: wangjunxiang |
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Description: Discrete sine transform matlab code
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Size: 1024 |
Author: Aman |
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Description: fractional cosine and sine transform
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Size: 63488 |
Author: Ramu |
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Description: 各式各樣轉換
(a) Fourier transform
(b) Cosine transform
(c) Sine transform
(d) Hartley transform
(e) Haar wavelet
(f) Hadamard transform
源碼加例題說明-(a) Fourier transform
(b) Cosine transform
(c) Sine transform
(d) Hartley transform
(e) Haar wavelet
(f) Hadamard transform
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Size: 56320 |
Author: wimiu |
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Description: 改子程序主要适用于多个奇数系列的正变换,详细参见附件-Forward transform of multiple odd sequences with only odd wave numbers (quarter-wave sine transform)
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Size: 11264 |
Author: |
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