为了提升蝶形单元的利用率,还可以有以下变种。deep feedback SDF. 【Deep SDF】 其架构如下,核心思想是让两级计算复用R2单元。 它其实每个蝶形带着三个buffer。一个长的,两个短的。我们以第一级为例。 输入A:0-4, B:5-7。然后输入C:8-12数据。此时和A作蝶形,产生的A往下传递,产生的C反馈回buffer。...
The deep feedback SDF FFT architecture is shown in Figure 14, the detail of a stage of the architecture is shown in Figure 15 and the timing in Figure 16. It can be noted that the stages include three buffers, one of them with double length than the other ones. First, data enter ...
频谱分析仪应用解惑之六—FFT 热度: FFT频谱分析 热度: StanfordResearchSystems phone:(408)744-9040 .thinkSRS ·DCto102.4kHzbandwidth ·90dBdynamicrange ·Low-distortionsynthesizedsource ·145dBdynamicrangein swept-sinemode ·Real-timeoctaveanalysis ...