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文章提出了用数字脉冲宽度调制和内插噪声成形技术将数字声音信号直接转换为模拟功率信号的方法,讨论了采用这种方法的数字功放的性能模拟结果。结合原型机设计参数的选取分析了简单的三阶系统。
In this paper, a method of converting digital sound signal directly into analog power signal by digital pulse width modulation and interpolation noise shaping technique is proposed. The simulation results of the performance of digital amplifier using this method are discussed. With the selection of prototype design parameters, a simple third-order system was analyzed.