我有两个信号A和B（请参见附件），它们是在同一事件中从不同采样频率的不同设备录制的。
我试图通过互相关方法对齐两个信号。但是，当使用alignignals函数时，它似乎实际上延迟了更多的信号：
load A
load B
% Sampling frequencies
Fs_A = 1000; %
Fs_B = 1926; % 1925.93 Hz is the one provided by the device
% Resample signal A
A = resample(A, Fs_B, Fs_A);
% Plot of the two signals "delayed"
figure(1)
plot(A)
hold
plot(B*1000)
% Aling both signals
X = A;
Y = B;
[Xa,Ya,D] = alignsignals(X,Y,[],'truncate');
figure(2) % plot both signals "aligned"
plot(Xa)
hold
plot(Ya*1000)
我也尝试过使用xcorr功能，结果相似：
load A
load B
% Sampling frequencies
Fs_A = 1000; %
Fs_B = 1926; % 1925.93 Hz is the one provided by the device
% Resample signal A
A = resample(A, Fs_B, Fs_A);
% Plot to visualize that one signal is delayed
figure(1)
plot(A)
hold
plot(B*1000)
% Aling both signals using xcorr
[C,lag] = xcorr(A,B);
figure(2)
plot(lag,C);
[M,I] = max(C);
D = lag(I);
figure(3),plot(1:length(A), A, 'b',1+abs(D):length(B)+abs(D), B*1000, 'r'), title(' "Synchronised" signals ');
我犯了什么错误吗？
谢谢