cvphase

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Convert phase spectrum.

Usage
cvphase(p, ifmt, ipos, ibin, ofmt, opos, obin, nbin, rev, sr, len, hop)
p
original phase spectrum at frame ipos and in the format ifmt; p is a vector with n values
ifmt, ofmt
input and output phase format (1 = locked phase, 2 = normal phase (not locked))
ipos, opos
input and output frame index
ibin, obin
input and output spectral bin
nbin
number of spectral bins to convert
rev
reverse output phase (0=no, 1=yes)
sr
signal sampling rate in Hz; this argument is currently not used but must be supplied!
len, hop
transformation length and hopsize (in samples) used for analysis and resynthesis
Description
This function replaces the following macro code
    [macro cvphase arg: #p #ifmt #ipos #ibin #ofmt #opos #obin #nbin #rev #sr #len #hop]
    #dp  := eval 2 * pi * $#hop / $#len
    #idt := eval $#ifmt == 2 ? 0 : $#dp * $#ipos
    #odt := eval $#ofmt == 2 ? 0 : $#dp * $#opos
    #r := eval init($#nbin,1)
    for #i := 0 to $#i < $#nbin step #i := int $#i+1
        #z := eval ($#p[$#i] + pi + ($#i+$#ibin)*$#idt) % (2*pi)
        if $#rev == 1 #z := eval -$#z
        $#r[$#i] := eval ($#z - ($#i+$#obin)*$#odt) % (2*pi) - pi
    end
    exit 1 set $#r
Result
A vector r with nbin values, containing the converted phase values.
Note: The input and output phase values are in the range -pi..pi.
See also
hcomb, optmm, script application MulAc

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