function y=rfft(x,n,d)
%RFFT Calculate the DFT of real data Y=(X,N,D)
% Data is truncated/padded to length N if specified.
% N even: (N+2)/2 points are returned with
% the first and last being real
% N odd: (N+1)/2 points are returned with the
% first being real
% In all cases fix(1+N/2) points are returned
% D is the dimension along which to do the DFT
% Copyright (C) Mike Brookes 1998
% Version: $Id: rfft.m,v 1.7 2009/06/03 11:57:52 dmb Exp $
%
% VOICEBOX is a MATLAB toolbox for speech processing.
% 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
% http://www.gnu.org/copyleft/gpl.html or by writing to
% Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
s=size(x);
if prod(s)==1
y=x
else
if nargin <3 || isempty(d)
d=find(s>1);
d=d(1);
if nargin<2
n=s(d);
end
end
if isempty(n)
n=s(d);
end
y=fft(x,n,d);
y=reshape(y,prod(s(1:d-1)),n,prod(s(d+1:end)));
s(d)=1+fix(n/2);
y(:,s(d)+1:end,:)=[];
y=reshape(y,s);
end
没有合适的资源?快使用搜索试试~ 我知道了~
资源推荐
资源详情
资源评论
收起资源包目录
4.3 共振峰估计实验.zip (13个子文件)
4.3 共振峰估计实验
Formant_Root.m 1KB
enframe.m 797B
Formant_Cepst.m 762B
C4_3_y_3.m 972B
C4_3_y_1.m 1KB
pitch_vad.m 1KB
findSegment.m 731B
C4_3_y_2.m 809B
C4_3_y.wav 684B
lpcar2pf.m 1KB
Formant_Interpolation.m 1KB
rfft.m 2KB
FrameTimeC.m 132B
共 13 条
- 1
资源评论
小码蚁.
- 粉丝: 2520
- 资源: 4057
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功