pwelch函数绘制频谱，输出长度和预期长度不符，如何处理？技术分享MoHub发布于 2025-07-10 11:02:30查看 1过去327天设置 DFT 点的数量需要配置 pwelch 函数的 nfft 参数。对于实值输入信号 x，如果 nfft 是偶数，PSD 估计值 pxx 的长度为 (nfft/2+1)，如果 nfft 是奇数，则长度为(nfft+1)/2。 所属专栏：Syslab基础平台产品信息：Syslab科学计算环境科学计算 写回答 关注问题 点赞 0 踩 0 收藏 0
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