From 69cc2ffb24264f45bfc7bc5d9b3ae6b1f055e44e Mon Sep 17 00:00:00 2001
From: Florian Atteneder <florian.atteneder@uni-jena.de>
Date: Mon, 31 Jan 2022 13:09:21 +0000
Subject: [PATCH] fix wrong GW frequency cut off for FFI method

---
 watpy/wave/wave.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/watpy/wave/wave.py b/watpy/wave/wave.py
index 9ad911d..9511ebc 100644
--- a/watpy/wave/wave.py
+++ b/watpy/wave/wave.py
@@ -618,7 +618,7 @@ class wave(object):
         """
         if self.prop['var']=='Psi4':
             if fcut < 0. :
-                fcut = 2 * self.prop['init.frequency'] / max(1,abs(self.prop['mmode']))
+                fcut = max(1,abs(self.prop['mmode'])) * self.prop['init.frequency'] / 2
             dt = self.time[1] - self.time[0]
             return win * fixed_freq_int_2( win * self.p4, fcut, dt = dt)
         else:
-- 
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