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进阶到频域处理时，我截取音频片段进行傅里叶变换，将144个频率仓对应到灯带的每个像素。结果令人沮丧：能量集中在少数灯珠上，大部分区域暗淡无光。调整频段范围收效甚微，这种粗糙的FFT方案是多数尝试者的终点。
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Using every Firefox extension
# Recover files as they were before a certain time
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