写一段matlab代码，将这段数组不做任何处理直接转换为模拟信号，模拟信号各部分幅值等于数字信号数值-619.76715 -529.13434 -312.71863 -167.78337 -146.2360 -80.175125 -16.083157 -43.989765 -44.47398 -47.258278 -33.44726 -54.801384 -59.248947 -50.705193 -65.35704-57.36374 -45.225815 -31.582525 -28.156683 -59.727234 -54.488205 -24.398212 -43.865265 -45.365425 -77.97594 -54.436 -41.721855 -65.16225 -71.07881 -51.758736 -93.98244 -84.74326 -140.21878 -97.946014 -92.74178 -73.625725 -117.73671 -121.05837 -131.25688 -110.62707 -147.19264 -176.98892 -170.10733 -152.15996 -163.76915 -175.61983 -188.67313 -238.54276 -245.13528 -249.34978

假设这段数组为x，那么可以使用以下代码将其转换为模拟信号：

% 数字信号
x = [619.76715 529.13434 312.71863 167.78337 146.2360 80.175125 16.083157 43.989765 44.47398 47.258278 33.44726 54.801384 59.248947 50.705193 65.35704 57.36374 45.225815 31.582525 28.156683 59.727234 54.488205 24.398212 43.865265 45.365425 77.97594 54.436 41.721855 65.16225 71.07881 51.758736 93.98244 84.74326 140.21878 97.946014 92.74178 73.625725 117.73671 121.05837 131.25688 110.62707 147.19264 176.98892 170.10733 152.15996 163.76915 175.61983 188.67313 238.54276 245.13528 249.34978];

% 转换为模拟信号
y = x - mean(x) - 619.76715;

% 绘制模拟信号波形
t = linspace(0, 1, length(y));
plot(t, y);
xlabel('Time (s)');
ylabel('Amplitude');
title('Analog Signal');

运行以上代码后，将会得到一条模拟信号波形。