diff --git a/huddle-test-geophones/figs/tf_geophones.png b/huddle-test-geophones/figs/tf_geophones.png
index eddee9d..22ab961 100644
Binary files a/huddle-test-geophones/figs/tf_geophones.png and b/huddle-test-geophones/figs/tf_geophones.png differ
diff --git a/huddle-test-geophones/index.html b/huddle-test-geophones/index.html
index 814c589..d356a40 100644
Binary files a/huddle-test-geophones/index.html and b/huddle-test-geophones/index.html differ
diff --git a/huddle-test-geophones/index.org b/huddle-test-geophones/index.org
index 78e2066..b6da652 100644
--- a/huddle-test-geophones/index.org
+++ b/huddle-test-geophones/index.org
@@ -162,7 +162,7 @@ The cut-off frequency is set at 1kHz.
 [[file:figs/psd_velocity.png]]
 ** Transfer function between the two geophones
 #+begin_src matlab :results none
-  [T12, f12] = tfestimate(x1, x2, hanning(1/dt), 0, [], 1/dt);
+  [T12, f12] = tfestimate(x1, x2, hanning(ceil(length(x1)/100)), [], [], 1/dt);
 #+end_src
 
 #+begin_src matlab :results none
@@ -181,7 +181,7 @@ The cut-off frequency is set at 1kHz.
   xlabel('Frequency [Hz]'); ylabel('Phase');
 
   linkaxes([ax1,ax2],'x');
-  xlim([2, 500]);
+  xlim([1, 500]);
 #+end_src
 
 #+NAME: fig:tf_geophones