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Hilbert Shifter

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Re: Hilbert Shifter

Postby martinvicanek » Mon Jul 13, 2015 9:03 pm

The coefficients are from Tronic's calculator at viewtopic.php?f=4&t=3112&start=10#p16916
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Re: Hilbert Shifter

Postby borodadada » Mon Jul 13, 2015 10:11 pm

How create coeff. in pair? I set @order = 8; @transition = 0.001 First line coeff?
coeff = [
0.15792150085531764,
0.471 13659195211427,
0.725103231339305,
0.8708226386356741,
0.9422417392772633,
0.9749764749218756,
0.9898478236632062,
0.997282698317513
]
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Re: Hilbert Shifter

Postby Tronic » Tue Jul 14, 2015 12:28 am

Code: Select all
coefs = [your array]
coefs_even = coefs.values_at(* coefs.each_index.select {|i| i.even?})
coefs_odd = coefs.values_at(* coefs.each_index.select {|i| i.odd?})

Edit: corret typo
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Re: Hilbert Shifter

Postby borodadada » Tue Jul 14, 2015 8:12 am

Thanks, code work. For the coefficients of Hilbert , which need some special settings? I try
@order = 8; @transition = 0.1
coeff = polyphase_IRR_coeff.compute_coefs_spec_order_tbw(@order,@transition)
coefs = coeff
coefs_even = coefs.values_at(* coefs.each_index.select {|i| i.even?})
coefs_odd = coefs.values_at(* coefs.each_index.select {|i| i.odd?})
But phase rotated not 90 degree.
borodadada
 
Posts: 48
Joined: Sun Jun 02, 2013 5:58 pm

Re: Hilbert Shifter

Postby martinvicanek » Tue Jul 14, 2015 6:01 pm

borodadada wrote:[...] phase rotated not 90 degree.
If you post your schematic we can try to help.
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