Hi.
The new libraries are very useful. Thanks.

But I have some issue in using butterworth bandpass filter in the new 
filter.lib.

When using bandpass(Nh,fl,fu)
only when Nh is even number,it gets compilation error
 
math.lib : 107 : ERROR : undefined symbol : PI

a1s = -2*cos(-PI + (1-parity)*ma.PI/(2*Nh) + (S-1+parity)*ma.PI/Nh);

I found that in line 1598 so I thought it will be fixed by changing PI → ma.PI.
but it get another error.

C�� : -1 : ERROR : no environment to access : 0,ma : -.PI

Any ideas…?
Thanks.


Tokyo University of the Arts
Tomoya Matsuura 

matsuura.nonym...@gmail.com
s2113...@ms.geidai.ac.jp

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