资源简介
录音并用自相关法计算语音基频。配有相关作图。你懂的,课程练习参考。

代码片段和文件信息
function f=enframe(xwininc)
%ENframe split signal up into (overlapping) frames: one per row. F=(XWININC)
%
% F = ENframe(XLEN) splits the vector X up into
% frames. Each frame is of length LEN and occupies
% one row of the output matrix. The last few frames of X
% will be ignored if its length is not divisible by LEN.
% It is an error if X is shorter than LEN.
%
% F = ENframe(XLENINC) has frames beginning at increments of INC
% The centre of frame I is X((I-1)*INC+(LEN+1)/2) for I=12...
% The number of frames is fix((length(X)-LEN+INC)/INC)
%
% F = ENframe(XWINDOW) or ENframe(XWINDOWINC) multiplies
% each frame by WINDOW(:)
% Copyright (C) Mike Brookes 1997
%
% Last modified Tue May 12 13:42:01 1998
%
% VOICEBOX home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You can obtain a copy of the GNU General Public License from
% ftp://prep.ai.mit.edu/pub/gnu/COPYING-2.0 or by writing to
% Free Software Foundation Inc.675 Mass Ave Cambridge MA 02139 USA.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
nx=length(x);
nwin=length(win);
if (nwin == 1)
len = win;
else
len = nwin;
end
if (nargin < 3)
inc = len;
end
nf = fix((nx-len+inc)/inc);
f=zeros(nflen);
indf= inc*(0:(nf-1)).‘;
inds = (1:len);
f(:) = x(indf(:ones(1len))+inds(ones(nf1):));
if (nwin > 1)
w = win(:)‘;
f = f .* w(ones(nf1):);
end
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 2072 2017-06-07 23:16 基频计算\enfr
文件 879 2019-11-18 13:46 基频计算\pitchcalculator.m
目录 0 2019-11-18 13:47 基频计算
----------- --------- ---------- ----- ----
2951 3
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