shithub: opus

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fix ulaw2lin()

--- a/dnn/ulaw.py

+++ b/dnn/ulaw.py

@@ -3,7 +3,9 @@

 import math

 def ulaw2lin(u):

-    return (math.exp(u/128*math.log(256))-1)/255

+    s = np.sign(u)

+    u = np.abs(u)

+    return s*(np.exp(u/128*math.log(256))-1)/255

 def lin2ulaw(x):

-- 

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