搜索资源列表
wavelet
- 介绍小波处理及其应用，主要用于小波的信号降噪及其小波变换分析。-Introduction of wavelet and its application treatment, mainly for wavelet noise reduction and its wavelet transform signal analysis.
Waveletdecomposition
- This routine performs a 1-D Periodic Orthogonal Wavelet decomposition. It also performs the row decomposition component of a 2-D wavelet transform. An input signal x[n] is low pass and high pass filtered and the resulting signals decimated by factor
bss_oracle_1.0
- 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
music_recognize_on_matlab
- 从信号处理的角度讲，小波(变换)是强有力的时频分析(处理)工具，是在克服傅立叶变换缺点的基础上发展而来的，所以从信号处理的角度认识小波，需要傅立叶变换、傅立叶级数、滤波器等的基础知识。 -From signal processing perspective, the wavelet (transform) is a powerful time-frequency analysis (processing) tool is to overcome the shortcomings on th
audio_play
- play and transform audio signal to frequency domain.
H264DCT_SSE2
- 完全利用SSE2汇编指令实现的H.264的色度信号的DCT变换和量化、反量化和反变换程序，包含Hardamard变换-Fully implemented using SSE2 assembler instructions H.264 DCT chrominance signal transform and quantization, inverse quantization and inverse transform process, including Hardamard transform
harmonic
- 语音harmonic特征提取，先对语音信号分帧，然后对每一帧使用中心频率维基音频率的倍数的带通滤波器进行滤波，最后滤波结果的傅立叶变换的结果-Voice harmonic feature extraction, the first speech signal sub-frame, and then using the center frequency for each frame of Wiki sound frequency multiple of the band-pass filter f
watermark
- 基于DCT域音频水印完整源代码，包括水印图像的预处理（二维二值图像Arnold变换、混沌加密、降维），水印的嵌入提取以及检测，信噪比和相似性系数。-Based on the the DCT domain audio watermarking complete source code, including the watermark image preprocessing (two-dimensional binary images Arnold transform chaotic encrypt
pinyu-bianhuan
- 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.
ua4_1
- 对声音信号进行butter低通滤波,对录入的信号进行傅里叶变换，同时对比滤波前后，声音信号的不同-Butter sound signal low-pass filtering, of the Fourier transform of input signals, while before and after filtering, different sound signal
melp_init
- The MELP coder depends on the computation of Fourier magnitudes the prediction-error signal to capture the shape of the excitation pulse, which basically are the magnitudes of the Fourier transform. These quantities are quantized and transmitte
STFT
- 数字信号处理的傅里叶变换与逆傅里叶变换经典实现，非常具有实用价值-Fourier transform and inverse Fourier transform of digital signal processing to achieve the classic, very practical value
speech-signal-filter
- 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
libogg
- 首先对输入音频PCM信号进行时频分析，决定MDCT的长度，即加窗，然后进行MDCT变换；同时对原始音频信号要进行FFT分析。两种变换的频谱系输入给心理声学模型单元，MDCT系数用于噪声掩蔽计算，H可结果用于音调掩蔽特性计算，共同构造总的掩蔽曲线。然后根据MDCT系数及掩蔽曲线，对频谱系数进行线性预测分析用LPC(Linear Prediction Coefficience，线性预测系数)表示频谱包络，即基底曲线(Floor Curve)；或通过线性分段逼近方式获得基底曲线。从MDCT系数中去掉
cqt_algorithms
- 音频处理中的恒定Q变换，主要的应用在声源分离、音频谱分析及音频效果上。-Constant-Q transform in music processing. It is useful for several applications, including sound source separation, music signal analysis, and audio effects.
ytesp
- Combined with PCA scale invariant feature transform (SIFT) algorithm, LCMV optimization design array signal processing, Debugging can be used.