[OctDev] pei_tseng_notch function failing unit test

[Mike M. <mtm...@ie...>]

Hi Alex, I see that you are the author of pei_tseng_notch, would you
mind taking a look at the test failure? I get the same result as that
shown in the report (reproduced below). You can reply with any
comments or fixes to either this email or the bug report:

https://sourceforge.net/tracker/?func=detail&aid=3553263&group_id=2888&atid=102888

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octave:7> test pei_tseng_notch
  ***** test
 ##2Hz bandwidth
 sf = 800; sf2 = sf/2;
 data=[sinetone(49,sf,10,1),sinetone(50,sf,10,1),sinetone(51,sf,10,1)];
 [b, a] = pei_tseng_notch ( 50 / sf2, 2 / sf2 );
 filtered = filter ( b, a, data );
 damp_db = 20 * log10 ( max ( filtered ( end - 1000 : end, : ) ) );
 assert ( damp_db, [ -3 -251.9 -3 ], 0.1 )
!!!!! test failed
assert (damp_db,[-3, -251.9, -3],0.1) expected
    -3.0000  -251.9000    -3.0000
but got
    -3.0103  -250.7217    -3.0935
maximum absolute error 1.17825 exceeds tolerance 0.1

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-- 
mike