ButterWorth巴特沃斯滤波64B位 C++库，支持高通、低通、带通、带阻滤波。需要32位库请私信。 提供C#调用方法： public static class ButterFilter { [DllImport("V_Filter.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)] public extern static void DeleteFilter(IntPtr filter); [Dll