43 lines
1.3 KiB
Matlab
43 lines
1.3 KiB
Matlab
hi = load('mat/cedrat_la75b_high_1_stack.mat', 't', 'V_in', 'V_out');
|
|
me = load('mat/cedrat_la75b_med_1_stack.mat', 't', 'V_in', 'V_out');
|
|
lo = load('mat/cedrat_la75b_low_1_stack.mat', 't', 'V_in', 'V_out');
|
|
|
|
%%
|
|
run setup;
|
|
|
|
win = hann(ceil(0.1/Ts));
|
|
|
|
[tf_hi, f_hi] = tfestimate(hi.V_in, hi.V_out, win, [], [], 1/Ts);
|
|
[co_hi, ~] = mscohere(hi.V_in, hi.V_out, win, [], [], 1/Ts);
|
|
|
|
[tf_me, f_me] = tfestimate(me.V_in, me.V_out, win, [], [], 1/Ts);
|
|
[co_me, ~] = mscohere(me.V_in, me.V_out, win, [], [], 1/Ts);
|
|
|
|
[tf_lo, f_lo] = tfestimate(lo.V_in, lo.V_out, win, [], [], 1/Ts);
|
|
[co_lo, ~] = mscohere(lo.V_in, lo.V_out, win, [], [], 1/Ts);
|
|
|
|
%%
|
|
figure;
|
|
ax1 = subplot(2, 1, 1);
|
|
hold on;
|
|
plot(f_lo, abs(tf_lo), 'DisplayName', 'low')
|
|
plot(f_me, abs(tf_me), 'DisplayName', 'med')
|
|
plot(f_hi, abs(tf_hi), 'DisplayName', 'high')
|
|
set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log');
|
|
ylabel('Amplitude'); xlabel('Frequency [Hz]');
|
|
hold off;
|
|
legend('location', 'southwest');
|
|
ylim([0.1, 50]);
|
|
|
|
ax2 = subplot(2, 1, 2);
|
|
hold on;
|
|
plot(f_lo, 180/pi*unwrap(angle(tf_lo)))
|
|
plot(f_me, 180/pi*unwrap(angle(tf_me)))
|
|
plot(f_hi, 180/pi*unwrap(angle(tf_hi)))
|
|
set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'lin');
|
|
ylabel('Phase'); xlabel('Frequency [Hz]');
|
|
hold off;
|
|
ylim([-360, 0]);
|
|
|
|
linkaxes([ax1,ax2], 'x');
|
|
xlim([10, 5000]); |