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.TH QUANT_f 5 "Janvier 1997" "Scilab Group" "Scicos Block"
.so ../sci.an
.SH NAME
QUANT_f - Scicos Quantization block
.SH DIALOGUE PARAMETERS
.TP 20
Step
: scalar, Quantization step
.TP
Quantization method
: scalar with possible values 1,2,3 or 4
.RS
.TP
1
: Round method
.TP
2
: Truncation method
.TP
3
:
Floor method
.TP
4
:
Ceil method
.RE
.SH DESCRIPTION
This block outputs the quantization of the input according to a choice
of methods
.LP
for \fVRound\fR method
\fVy(i)=Step*(int(u(i)/Step+0.5)-0.5)\fR if \fVu(i)<0\fR.
\fVy(i)=Step*(int(u(i)/Step-0.5)+0.5)\fR. if \fVu(i)>=0\fR.
.LP
For truncation method
\fVy(i)=Step*(int(u(i)/Step+0.5))\fR if \fVu(i)<0\fR.
\fVy(i)=Step*(int(u(i)/Step-0.5))\fR if \fVu(i)>=0\fR.
.LP
For floor method
\fVy(i)=Step*(int(u(i)/Step+0.5))\fR .
.LP
For ceil method
\fVy(i)=Step*(int(u(i)/Step-0.5))\fR .
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