Home > freetb4matlab > comm > quantiz.m

quantiz

PURPOSE ^

%

SYNOPSIS ^

function [qidx, q, d] = quantiz (x, table, codes)

DESCRIPTION ^

% -*- texinfo -*-
% @deftypefn {Function File} {@var{qidx} = } quantiz (@var{x}, @var{table})
% @deftypefnx {Function File} {[@var{qidx}, @var{q}] = } quantiz (@var{x}, @var{table}, @var{codes})
% @deftypefnx {Function File} {[ @var{qidx}, @var{q}, @var{d}] = } quantiz (@var{...})
%
% Quantization of an arbitrary signal relative to a paritioning.
%
% @table @code
% @item qidx = quantiz(x, table)
%   Determine position of x in strictly monotonic table.  The first
%   interval, using index 0, corresponds to x <= table(1).
%   Subsequent intervals are table(i-1) < x <= table(i).
%
% @item [qidx, q] = quantiz(x, table, codes)
%   Associate each interval of the table with a code.  Use codes(1) 
%   for x <= table(1) and codes(n+1) for table(n) < x <= table(n+1).
%
% @item [qidx, q, d] = quantiz(...)
%   Compute distortion as mean squared distance of x from the
%   corresponding quantization values.
% @end table
% @end deftypefn

CROSS-REFERENCE INFORMATION ^

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