RuntimeWarning: invalid value encountered in reduce ret = umr_sum(arr, axis, dtype, out, keepdims)
RuntimeWarning: overflow encountered in reduce ret = umr_sum(arr, axis, dtype, out, keepdims)
······
原因是butter带通滤波器的阶数过高,降低滤波器阶数即可
RuntimeWarning: invalid value encountered in reduce ret = umr_sum(arr, axis, dtype, out, keepdims)
RuntimeWarning: overflow encountered in reduce ret = umr_sum(arr, axis, dtype, out, keepdims)
······
原因是butter带通滤波器的阶数过高,降低滤波器阶数即可
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