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Description: 这是g.723语音标准的编码过程，在vc环境下课运行，压缩效率很高。-This is the standard G.723 voice coding process, vc operating environment running high compression efficiency.
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Size: 86422 |
Author: 说法我 |
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Description: CELP Voice Coder Version 3.2c
The U.S. Government shall not be held liable for any damages resulting from this code. Further reproduction or distribution of this code without prior written permission of the U.S Government is prohibited.
CELP（码本激励预测编码算法）-CELP Voice Coder Version 3.2 C The U. S. Gove rnment shall not be held liable for any damages r esulting from this code. Further reproduction or distribution of this code without prior writ ten permission of the government is notified prohibi ted. CELP (code-excited predictive coding algorithm)
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Size: 1958715 |
Author: 周周 |
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Description: 10阶LPC编解码及源程序，LPC-10 2400 bps Voice Coder-10 order LPC codec and the source code,LPC-10 2400 bps Voice Coder
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Size: 109568 |
Author: 李龙 |
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Description: 这是g.723语音标准的编码过程，在vc环境下课运行，压缩效率很高。-This is the standard G.723 voice coding process, vc operating environment running high compression efficiency.
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Size: 369664 |
Author: 说法我 |
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Description: 提供amr nb的程序和demo，是变速率语音编码学习的一种材料-provide the procedures and demo is variable-rate speech coding a learning materials
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Size: 585728 |
Author: 杨杰 |
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Description: CELP Voice Coder Version 3.2c
The U.S. Government shall not be held liable for any damages resulting from this code. Further reproduction or distribution of this code without prior written permission of the U.S Government is prohibited.
CELP（码本激励预测编码算法）-CELP Voice Coder Version 3.2 C The U. S. Gove rnment shall not be held liable for any damages r esulting from this code. Further reproduction or distribution of this code without prior writ ten permission of the government is notified prohibi ted. CELP (code-excited predictive coding algorithm)
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Size: 1958912 |
Author: 周周 |
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Description: 线性预测编码器，基于线性预测模型的语音编码器。-Linear predictive coding, and models based on linear prediction voice coder.
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Size: 262144 |
Author: chen |
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Description: ITU-T_G.729语音编码 ，语音压缩算法的资料及原程序-ITU-T_G.729 speech coding, voice compression algorithm of the data and the original program
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Size: 2048 |
Author: 王小莉 |
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Description: Voiceage G729 voice codec coder and decoder
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Size: 128000 |
Author: 888simon |
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Description: LPC-10 2400 编解码包 Release 1.5-LPC-10 2400 bps Voice Coder Release 1.5
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Size: 948224 |
Author: 荣涛 |
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Description: 描述了因特网和IP的主要特征，包括包丢失和时延抖动，并让读者了解数字信号处理器(DSP)和语音编码器在VoIP中所扮演的角色。本书还为读者讲述了如何通过ISDN、xDSL、HFC本地环路或其他途径建立与业务提供商之间的通路，以及目前主要的IP电话协议-Describes the main features of the Internet and IP, including packet loss and delay jitter, and to allow readers to understand the digital signal processor (DSP) and voice coder in the role of VoIP. The book also tells the reader how to ISDN, xDSL, HFC, or other means to establish a local loop between the suppliers and business access, and the current major IP telephony protocol
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Size: 19512320 |
Author: han |
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Description: 2.4 kbps MELP Proposed Federal Standard speech coder
Fixed-point C code, version 1.0
The fixed-point version of the voice codec Mixed Excitation Linear
Prediction (MELP) is based on specifications on the C-language software
simulation contained in GSM 06.06 This standard is available from the ETSI publication office
Department of Defense to use the C-language software simulation contained
in GSM 06.06 for the purposes of the development of a fixed-point
version of the voice codec Mixed Excitation Linear Prediction (MELP).
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Size: 1089536 |
Author: tkelin |
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Description: LPC-10 Voice coder using Matlab
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Size: 294912 |
Author: Hind A.Gabbar |
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Description: 本文着重研究网络中使用的MAC协议对语音传输过程的影响，以及无线传
感器网络中适用的语音编码算法。本文首先综述了现有无线传感器网络中常用
的MAC协议，对这些协议进行了分析比较。提出了一种新的基于TDMA的MAC
协议VR-TDMA，为了测试提出的协议性能，在NS2仿真平台上对该协议进行
了仿真，结果证明该协议具有良好的实时性能。然后研究了几种常用语音编码
算法的性能，通过比较研究，认为ADPCM语音编码算法的性能符合无线传感
器网络应用的要求，并对该算法进行了简化，减少了算法运行的计算量。实际
测试表明，算法具有良好的性能。
-In this paper,we concentrate on the mac protocols of wireless sensor networks，
especially the impact imposed on speech transmition．We also want to find a speech
coder which is fit for wireless sensor networks．Firstly,we intorduce the existing mac
protocol，such aS IEEE802．1 1，SMAC protocol，TRAMA protocol，DMAC protoc01．
Moreover we analyse and make comparison of them．Secondly，we propose a new
mac protocol named VR-TDMA．Simulation in NS2 proves that this protocol Canhave pleasing performance in real．time application．Thirdly,we
make a comparison
of some famous speech encoders．The result indicates that ADPCM(Adaptive
Di脏rential Pulse Code Modulation)is simpler than advanced low bit。rate VOICe
coding techniques and doesn’t require as heavy caculations．In this work，We simplify
the algorithm in order tO make it fit for the networks beaer．Actual tests prove that
this simplified algorithm work well in wireless sensor networks．
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Size: 3294208 |
Author: 曾晓丽 |
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Description: C代码实现的AMR语音编解码。AMR多速率编解码技术相比原有的GSM语音编码器采用固定的编码速率，AMR语音编码器则可根据无线信道和传输状况来自适应地选择一种最佳信道模式（全速率或半速率）和信源编码模式（以比特率来区分）进行编码传输。-C code to achieve AMR voice codec. AMR multi rate coding and decoding technology of GSM speech coder is compared to the original fixed code rate, AMR speech coder can be based on the wireless channel and the transmission state to adaptively an optimal channel mode (full rate or half rate) and source coding mode (to distinguish between the transmission with a bit rate).
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Size: 199680 |
Author: |
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Description: G.729B语音压缩编解码的实现程序，非常详细，C语言编的，亲测有效。-G. 729 b voice compression codec implementation procedures, very detailed, the C language plait, effective measurement.
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Size: 114688 |
Author: 吴秋玲 |
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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: This a project of LPC vocoder in matlab.
El objetivo de este proyecto es implementar una codificació n de la señ al de voz medi ante un vocoder LPC y realizar ademá s el proceso inverso, recuperando la señ al sinte tizada.
Los Vocoders (“voice coder”) tienen como objetivo preservar las caracterí sticas percep tualmente relevantes de la señ al de voz. Para ello asumen un modelo simplificado d
e producció n de voz.
Se basan en modelos especí ficos de la señ al de voz, identificando aspectos relevante
s del espectro localizado de la señ al de voz, es decir, explotan la baja sensibilidad del oí do a la informació n de fase.
-This is a project of LPC vocoder in matlab.
El objetivo de este proyecto es implementar una codificació n de la señ al de voz medi ante un vocoder LPC y realizar ademá s el proceso inverso, recuperando la señ al sinte tizada.
Los Vocoders (“voice coder”) tienen como objetivo preservar las caracterí sticas percep tualmente relevantes de la señ al de voz. Para ello asumen un modelo simplificado d
e producció n de voz.
Se basan en modelos especí ficos de la señ al de voz, identificando aspectos relevante
s del espectro localizado de la señ al de voz, es decir, explotan la baja sensibilidad del oí do a la informació n de fase.
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Size: 49152 |
Author: japaoli |
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Description: 进行语音编码与译码，重构语音，实现哈希值的生成与传输。-Reconstruct speech coding and decoding, voice, and realize the hash value generation and transmission.
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Size: 48128 |
Author: 池塘 |
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Description: Enhanced Voice Services coder. C implementation
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Size: 3542016 |
Author: gui_ca
|
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