用Visual Basic Ordered Dither Core Algorithm,希望对于大家有用。
标签: Algorithm Ordered Visual Dither
上传时间: 2016-04-22
上传用户:gaome
在需要对信号进行再量化的场合,可以通过加入Dither来避免小信号再量化所产生的谐波失真,但同时会使噪声功率增加。这种情况下,可以利用人耳的心理声学特性,通过噪声整形来降低噪声的可闻性,提高实际的信噪比,改善音质。本文提出了两种新的设计最优噪声整形滤波器的方法-遗传算法和非线性优化算法,并分别实现了原采样率下和过采样率下基于心理声学模型的最优噪声整形滤波的设计。结果证明,该方法灵活方便、实现效果良好。
标签: 整形滤波器
上传时间: 2014-01-05
上传用户:testAPP
The FPGA can realize a more optimized Digital controller in DC/DC Converters when compare to DSPs. In this paper, based on the FPGA platform, The theoretical analysis, characteristics, simulation and design consideration are given. The methods to implement the digital DC/DC Converters have been researched. The function module, state machine of digital DC/DC controller and high resolution DPWM with Sigma- Delta Dither has been introduced. They are verified by experiments on a 20 W, 300 KHz non-isolated synchronous buck converters.
标签: Converters controller optimized Digital
上传时间: 2013-12-30
上传用户:tzl1975