This is a question about 'freqt' command from anonymous.
Dear Prof. Tamamori,
I have two small questions regarding the latest version of SPTK,
(I know this should be asked in the forum but I have seen it is abondoned)
in the file
in the function
regarding the "for" loop towards the end of the function :
I have two questions :
1) shoudn't there be a minus instead of a plus before the "a" inside the loop
my reason for asking : I understand this is the implementation of
the allpass transfer function the warps the phase, but the interpretation of
y = x + alpha(y - x)
and in your code it seems you put a minus before the alpha
2) what is the reason for multiplying
when the value of g is computed
shouldn't b=1 ?
Thank you for your questions.
This is the reference paper about 'freqt' command.
A. V. Oppenheim and D. H. Johnson, “Discrete representation of signals,”
in Proc. IEEE, vol.60, no. 7, pp.681-691, June 1972.
In this paper, the algorithms about 'freqt' is described.
you can download it from IEEE Xplore.
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