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modelbasedonspectrumprediction
文章展示了基于高斯混合模型的语音频谱预测方法。频谱预测可能在传包过程中预防丢包这方面起到大作用。期望最大化算法用两倍或三倍的连续语音因素来测试模型。模型被用来设计第一,儿等指令预测量。预测表用频谱分配状态来估计并和一个简单的参考模型对比。最好的预测表得到一个平均频率扭曲值是0.46dB小于参考模型(This paper presents methods for speech spectrum prediction based
on Gaussian mixture models. Spectrum prediction may be useful in a packet transmission system where the sensitivity to packet losses is a major problem.
Models of speech are trained by the Expectation Maximization algorithm using pairs, triples etc. of consecutive cepstral vectors.
The models are used to design first, second etc. order predictors.
The prediction schemes are evaluated using the spectral distortion criterion and compared to a simple reference method. The
best prediction scheme obtains an average spectral distortion that
is 0.46 dB less than for the reference method. )
- 2010-07-06 16:48:31下载
- 积分:1
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choas
混沌信号优化,希望对混沌研究者有些帮助。。。(Chaotic signal optimization, the researchers hope to be helpful chaos)
- 2010-05-28 21:14:11下载
- 积分:1
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Solution-of-the-orbit-equation
Solution of the orbit equation: Theta as function of time t.
Numerical solution of Kepler’s equation for the elliptical test problem
Matlab code
- 2013-11-01 21:26:14下载
- 积分:1
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项目4
说明: 任务:设计一个4×2.5Gbit/s 长距离光纤传输系统,并利用OptiSystem 仿真验证。
要求:
1.采用波分复用技术,波长设置以100GHz 为间隔,频率分别为193.1THz、193.2THz、193.3THz、193.4THz,每个波长传输速率为2.5Gbit/s(NRZ),传输距离为300km。采用常规光纤,光纤损耗系数为0.25dB/km。
2.单通道光发送机最大输出功率为0dBm,光接收机的接收光功率不低于-26dBm,过载点为-10dBm。
3.可以采用EDFA 作为线路放大器,其中EDFA 的输入功率限制在-18~2dBm,最大输出功率20dBm,增益范围为13~25dB,噪声指数4.0dB。(Task: Design a 4 x 2.5 Gbit/s long-distance optical fiber transmission system, and use OptiSystem simulation to verify.
Requirement:
1. Using wavelength division multiplexing technology, the wavelength is set at 100GHz intervals, with frequencies of 193.1 THz, 193.2 THz, 193.3 THz and 193.4 THz, respectively. The transmission rate of each wavelength is 2.5 Gbit/s (NRZ), and the transmission distance is 300 km. The loss coefficient of conventional optical fibers is 0.25dB/km.
2. The maximum output power of a single-channel optical transmitter is 0 dBm, and the receiving power of an optical receiver is not less than -26 dBm, and the overload point is -10 dBm.
3. EDFA can be used as line amplifier, where the input power of EDFA is limited to - 18-2dBm, the maximum output power is 20dBm, the gain range is 13-25dB, and the noise index is 4.0dB.)
- 2019-05-13 09:39:41下载
- 积分:1
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OFDM-Simulation-Using-Matlab
1.OFDM入门零基础,及其宝贵和重要的仿真建模文档。
2.通过实例将OFDM在通信系统中的各种特性描述出来。
3.文档中含有该场景下所有仿真的源代码(文档的附录最后面),已在matlab下全部编译通过。(1.OFDM entry zero-based, and its valuable and important documents simulation modeling.
2. By example in the OFDM communication system describe the various features.
3. A document that contains all the simulation under this scenario the source code (appendix to the final surface of the document), has been under the full compile matlab.)
- 2009-09-13 15:52:41下载
- 积分:1
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GPSINSposMatlab
联合开发网 - pudn.com
- 2021-04-04 22:19:04下载
- 积分:1
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simulation
In the previous chapters we have encountered a number of ways to process digital
on
- 2014-11-14 08:57:10下载
- 积分:1
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anfispid
ANFIS control of DC motor
- 2009-11-28 04:14:17下载
- 积分:1
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immmix1
使用交互式算法比较单传感器和多传感器的性能。(Interactive algorithm compared with single-sensor and multi-sensor performance.)
- 2011-11-19 18:16:40下载
- 积分:1
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canny
matlab实现canny算子进行图像边缘提取。(canny operator matlab)
- 2013-12-01 19:25:19下载
- 积分:1