Description: Many problems in statistical pattern recognition begin with the preprocessing of multidimensional signals, such as images of faces or spectrograms of speech.
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Author:memcpy |
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Description: Implementation of a speech codec based on coding of speech at 8 kbit/s
using conjugate-structure algebraic-code-excited linear-prediction (CS-ACELP)
- We took .wav files that is sampled at 8000 Hz using 16-bit linear PCM. The encoding process is done every 10ms frame or 80 samples. For the preprocessing stage, the samples are high passed with cut-off frequency of 140 Hz and scaled down by 2. A total of 240 samples are buffer for windowing and autocorrelation computation. The autocorrelation coefficients are used to calculate the LP filter coefficients using the Levinson-Durbin algorithm. The LP filter coefficients are converted to Line Spectral Pair (LSP) coefficients. LSP coefficients are converted back to the LP filter coefficients, which is just the reverse process of the conversion from LP to LSP. This module is exactly what the decoder will need in order to convert the LSP coefficients to LP coefficients. We decided not to implement the LSF quantization module because we did not have the codebook information when we designed our system.
The open-loop pitch delay is calculated first for each frame. Then the closed-loop pitch Platform: |
Size: 40960 |
Author:coco |
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Description: 这是一段语音识别的c++源程序，包括预处理，端点检测，线性倒谱系数，dtw算法模式匹配。-This is a speech recognition c++ source, including preprocessing, detection, linear cepstrum, dtw algorithm for pattern matching. Platform: |
Size: 19456 |
Author:董芳 |
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Description: ：建立了一个基于HMM 算法的非特定人语音识别系统，阐述了具体实现过程，包括预处理、特征参数的提取及模板的匹配-: The establishment of a non-specific algorithm based on HMM Speech Recognition System, describes a specific implementation process, including preprocessing, feature extraction and template parameters match Platform: |
Size: 1443840 |
Author:黄新 |
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Description: 这是我的毕业设计的完整程序，非常有参考价值，包括数据，预处理，训练，识别，包括眼马尔科夫模型和神级网络，马上毕业了，传上做个纪念-This is my graduation project of the complete program is very valuable, including data, preprocessing, training, recognition, including the eye-level Markov model and the God of the network, once graduated, to be a memorial mass on
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Author:晓晓 |
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Description: 本段程序包含了语音识别预处理中的采样、量化、预加重、分帧加窗等程序，另外添加了端点检测需要的短时能量、过零率的程序，经实验测试，运行结果符合理论期望-Procedures in this paragraph contains the voice recognition preprocessing sampling to quantify the pre-emphasis, framing windowed program, the addition of short-term energy needs of endpoint detection, zero-rate program, the experimental tests, the operating results consistent with theoreticalexpect Platform: |
Size: 10240 |
Author:蒋干 |
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Description: 本 文 首先 介绍了语音识别的研究和发展状况，然后循着语音识别系统的处理过程，介绍了语音识别的各个步骤，并对每个步骤可用的几种方法在实验基础上进行了分析对比。研究了语音信号的预处理和特征参数提取，包括括语音信号的数字化、分帧加窗、预加重滤波、端点检测及时域特征向量和变换域特征向量.其中端点检测采用双门限法.通过实验比对特征参数的选取，采用12阶线性预测倒谱系数作为识别参数。详细分析了特定人孤立词识别
-This paper first introduces the research and development of speech recognition, and then follow the process of the speech recognition system, describes the various steps of the speech recognition, several methods are available and each step were analyzed and compared on an experimental basis. Study of the speech signal preprocessing and characterized parameter extraction, including voice signals of the digitization, stars frame windowed pre heavier filtering, endpoint detection timely domain feature vectors and transform domain feature vector. Wherein the endpoint detection using double doors limit law. By experiment than the characteristic parameters of the selected 12 order linear prediction cepstral coefficients as recognition parameters. A detailed analysis of a specific isolated word recognition Platform: |
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Author:mx |
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Description: NLP 文本预处理—— 标注词性、词频等信息-NLP text preprocessing- part of speech tagging, word frequency and other information Platform: |
Size: 6805504 |
Author:殷占洧 |
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Description: Preprocessing and trainning code for a speech recognition in real time in matlab. Look for extra.zip to have the GUI in matlab Platform: |
Size: 8192 |
Author:martal88 |
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Description: 带噪语音的产生最小二乘法拟合消除趋势项的函数
语音信号的预处理一——消除趋势项和直流分量-Generate the least squares method to eliminate noisy speech function fitting term trends in the speech signal preprocessing one- eliminating the trend term and DC components Platform: |
Size: 182272 |
Author:孟稳 |
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Search - speech preprocessing