优化窗口的FIR滤波器设计，以执行最大程度的平坦抽取阶段的信号调理

[1991] Conference Record. IEEE Instrumentation and Measurement Technology Conference Pub Date : 1991-05-14 DOI:10.1109/IMTC.1991.161666

G. Andria, M. Savino, A. Trotta

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引用次数: 6

摘要

提出了新的余弦窗，允许在多阶段抽取过程中实现最大程度的平坦低通FIR滤波器。在数字测量设备中，执行该策略是为了调整数据量以适应处理器的存储能力，同时对过采样后可用的数据集进行滤波，以数字方式消除量化产生的噪声功率。因此，有效比特数的增加改善了数字仪器的动态性能，特别是在较低的频率

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Optimized windows for FIR filter design to perform maximally flat decimation stages in signal conditioning

New cosine windows are proposed which allow maximally flat low-pass FIR filter realizations in a multistage decimation process. In digital measuring devices, this strategy is performed in order to adjust the amount of data to the storage-capabilities of the processor, in conjunction with filtering the data set available after oversampling to remove digitally the noise power produced by quantization. The consequent increase of the number of effective bits improves the dynamic performances of digital instrumentation, especially at lower frequencies.<>

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[1991] Conference Record. IEEE Instrumentation and Measurement Technology Conference

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