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Description: lpc 2000 based arm cortex m3 rc5 decoder at the other hand use remote control for sending a signal.You can use oscilloscope decoding the signal.
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Size: 177152 |
Author: yibo |
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Description: LPC1700 PWM控制，通过这个例子可以很清楚的了解LPC PWM的工作原理。-LPC1700 PWM control, through this example we can clearly understand the LPC PWM works.
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Size: 6144 |
Author: 戴先生 |
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Description: 预测语音信号的LPC系数，求出残差信号，再由残差信号恢复原始语音信号，由此可以看出残差信号在信号处理中的重要性。-Prediction of LPC coefficients about the speech signal, and a residual signal is obtained, and then restore the original speech signal from the residual signal, the importance of which can be seen in the residual signal in the signal processing.
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Size: 104448 |
Author: 田静 |
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Description: 利用matlab的lpc function 實做出將input source音檔算出其coefficent and gain並由上述資料可以重新合成還原音訊-The lpc function using matlab real audio file to make the input source is calculated by its coefficent and gain reduction above information can be re-synthesized audio
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Size: 1024 |
Author: hsujia |
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Description: Lpc Vocoder is used to decode the audio files. Where we can test the pitch, bits and formants of the audio files.
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Size: 1048576 |
Author: Abhinav Kumar |
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Description: LPC error code is define. If you want to know the noise in the voice then you can identify by this code.
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Size: 1384448 |
Author: Abhinav Kumar |
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Description: lpc 在语音识别中的应用，识别效果满意，可以借鉴参考学习-LPC application in speech recognition, the recognition effect is satisfied, you can reference for learning
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Size: 67584 |
Author: 徐跃东 |
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Description: lpc系列USB CDC上位机.inf驱动文件，可以在xp/win7的32位/64位计算机上成功安装。LPC1756单片机上验证通过。-lpc series USB CDC PC .inf driver files, can be successfully installed on xp/win7 is 32/64 computer. Verified by the LPC1756 microcontroller.
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Size: 2048 |
Author: 赵星 |
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Description: 一个带用户界面的matlab语音合成和识别的程序，MainGuide01.fig通过提取MFCC，用dtw来计算实时录音和模板之间的最小距离，给出识别结果，并且给出波形图，频谱图，语谱图。MainGuide02.fig是语音合成程序，通过load一个wav文件用LPC，残差和pitch两种方式进行合成，并且能实时听合成语音的效果。-This is an simple user interface program including speech recoginition and speech synthesis.MainGuide01.fig extracting MFCC and using DTW to calculate the minimum distance between the real-time recording and templates , the recognition results are achieved, and the waveform diagram, FFT result , spectrum diagram are shown. MainGuide02.fig is a speech synthesis program, it load a wav file using LPC, synthesis by the residuals or by pitch two ways, you can listen to synthesized speech effect in the real time .
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Size: 365568 |
Author: 袁斌 |
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Description: NXP LPC1788 WMWIN 5.24 GUI LPC官网例程, 里面没有GUI源代码,是GUI.LIB库文件, 是一个完整的工程, 可以按照自己的硬件修改-NXP LPC1788 WMWIN 5.24 GUI LPC official website of the routine, there is no GUI source code is GUI.LIB library file is a complete project, you can modify according to their own hardware
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Size: 11444224 |
Author: 王东方 |
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Description: LPC analysis filter.Allowing wrap around so that two wraps can cancel each other. The rare cases where the result wraps around can only be triggered by invalid streams.
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Size: 2048 |
Author: juelvcp |
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Description: NuTiny-SDK-N79E85J is the specific development tool for LPC Microcontroller series ¡ VN79E81x/N79E85x/N79E84x.
Users can use NuTiny-SDK-N79E85J to develop and verify the application program easily. NuTiny-SDK-N79E85J
includes 2 portions. One is N79E85J_Tiny-EVB and the other is Nu-Link-Me. N79E85J_Tiny-EVB is
uation board and Nu-Link-Me is its Debug Adaptor. Thus, users do not need additional ICE equipment.
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Size: 467968 |
Author: illusion |
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Description: 基于PCI总线和LPC接口的POST主板诊断卡代码，已经通过fpga测试可以使用，性能非常稳定。-Based on the PCI bus and LPC POST motherboard diagnostic card code to interface fpga has passed the test can be used, the performance is very stable.
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Size: 751616 |
Author: wanglong |
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Description: Linear-Predictive-Coder
MATLAB Implementation of LPC algorithm for speech signal
# Why LPC?
In communication systems it is often necessary to transmit audio(speech) signal in compressed or encoded form because of bandwidth limitation of the channel. In this regard, ‘Linear predictive coding(LPC)’ is an effctive method of speech coding at a low bit-rate.
# Features
** Analysis/Encoding phase,Synthesis/Decoding phase.
**Human voice modelled with all-pole filter.
** LPC parameters(filter coefficients, pitch, gain etc) extraction at the decoding phase.
** Non-overlapping frames of 30 milliseconds in duration
# How To Run
** Make sure MATLAB(latest version) is installed
** Put both files(LPC.m with .mp3 file) in the same folder
** Open LPC.m file and run it.
## Comments
Different audio (.mp3) files can be coded/decoded by changing the input file name in the code.
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Size: 2048 |
Author: japaoli |
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Description: 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系数中去掉频谱包络则得到白化的残差频谱(Residue)，由于残差频谱波动范围明显变小，从而降低量化误差。之后可以选择是否采用声道耦合(Channel Coupling)技术进一步降低冗余度，耦合主要是将左右声道数据从直角坐标映射到平方极坐标；最后对白化的残差信号有效地以矢量量化表示。最后将要传输的各种信息数据按Vorbis定义的包格式组装，形成Vorbis压缩码流。-First, the input audio PCM signal time-frequency analysis to determine the length of the MDCT, that windowing, then MDCT transform while the original audio signal to FFT analysis. Two Transformations spectral line input to the psychoacoustic model unit, MDCT coefficients used to calculate the noise masking, H can be used to tone masking characteristic calculation result, the overall structure of the common masking curve. Then according to the MDCT coefficient and the masking curve, spectrum analysis using linear prediction coefficients LPC (Linear Prediction Coefficience, linear prediction coefficients) represent the spectral envelope, ie the base curve (Floor Curve) or approaching the base curve obtained by linear segments. Removed the MDCT coefficients in the spectral envelope of the residual spectrum obtained albino (Residue), since the fluctuation range of the residual spectrum significantly smaller, thereby reducing the quantization error. Then you can choose whether to use cha
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Size: 505856 |
Author: 张小 |
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Description: 利用MATLAB执行LPC分析和合成语音文件和显示原始语音信号通过滤波,提取LPC的错误(激发)信号,然后使用逆LPC的滤波误差信号,可以完全恢复原始语音信号。-This MATLAB exercise performs LPC analysis and synthesis on a speech file and shows that by filtering the original speech signal, extracting the LPC error (excitation) signal, and then using the inverse LPC filter on the error signal, the original speech signal can be recovered exactly.
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Size: 3045376 |
Author: 付晓强 |
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Description: 基于nxp lpc cortex-m4系列处理器的USB，以太网，VxWorks，ucosIII的高级应用程序，直接可以使用-Based on NXP LPC architecture of m4 processor series USB, Ethernet, VxWorks, senior ucosIII applications, can use directly
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Size: 19085312 |
Author: zxy |
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Description: lpc 1778 CAN发送例子，可以实现中断发送-lpc 1778 CAN SEND
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Size: 133120 |
Author: xiaoling |
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