[問題] 關於TOOLBOX裡的VOICEBOX已回收
不才無能
最近載了VOICEBOX 裡面有個estnoisem檔
是透過 minimum statistics追蹤最小值的function
but 不才研究了兩天 還沒摸透澈
敢問有大大有用過此function的嗎?
能否指導不才的迷津
function [x,zo,xs]=estnoisem(yf,tz,pp)
% Inputs:
% yf input power spectra (one row per frame)
% tz frame increment in seconds
% Alternatively, the input state from a previous call (see below)
% pp algorithm parameters [optional]
%
% Outputs:
% x estimated noise power spectra (one row per frame)
% zo output state
% xs estimated std error of x (one row per frame)
% xs seems often to be an underestimate by a factor of 2 or 3
已上是function以及function的注解~"~
以下是註解裡給的例子
% Example use: y=enframe(s,w,ni); % divide speech signal s(n) into
% % overlapping frames using window w(n)
% yf=rfft(y,nf,2); % take fourier transform
% dp=estnoisem(yf.*conj(yf),tinc); % estimate the noise
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