www.gusucode.com > 语音信号处理工具箱 - Voicebox源码程序 > Voicebox\readsfs.m
function [y,fs,hd,ffx]=readsfs(ff,ty,sub,mode,nmax,nskip) %readsfs Read a .SFS format sound file [Y,FS,HD,FFX]=(FF,TY,SUB,MODE,NMAX,NSKIP) % % The SFS (Speech Filing System) is a package mostly written by Mark Huckvale % and is available for UNIX and PC systems from http://www.phon.ucl.ac.uk/resource/sfs/ % % Input Parameters: % % FF gives the name of the file or alternatively % can be the ffx output from a previous call to readsfs % TY gives the type of data item required e.g.: % 0 Main header, 1 Speech data, 2 Laryngograph, 5 Annotation % SUB specifies the instance of type TY in the file: 0 for first (default), -1 for last % MODE specifies the following (*=default): % % File I/O: 'f' Do not close file on exit % Int Format: 'i' Force integer data to be at least 16 bits % (some sfs files have a header error which falsely indicates 8-bit data) % % NMAX maximum number of samples to read (or -1 for unlimited [default]) % NSKIP number of samples or frames to skip from start of file % (or -1 to continue from previous read when FFX is given instead of a filename [default]) % % Output Parameters: % % Y data matrix or cell matrix whose format depends on TY: % TY=0: empty % TY=5: cell array {nf,3} = {position length annotation} % TY=1,2: column vector containing data % TY=11: data array with one row per frame % FS sample frequency in Hz % HD cell matrix whose format depends on TY: % TY=0: cell{14,1} % {1} = [ date file_number machine_type ] % {2} = File type (= 'UC2') % {3} = username of creator % {4} = site of creator % {5} = source % {6} = database % {7} = speaker name % {8} = session code % {9} = session date % {10} = name of token % {11} = token repetition code % {12} = recording conditions % {13} = archiving details % {14} = general comments % TY>0: cell{4,1} % {1} = (1,14) array: % {1}(1) = processdate % {1}(2) = datatype: 1=speech, 2=lx, 3=tx cycle lengths, 4=fx freq % 5=annotations, 6=phonetic, 7=synthesiser, 8=words % 9=grey-level, 10=voicing, 11=energy, 12=formants % 13=energy, 14=lpc, 15=markov, 16=acoustic, 17=?, % 18=geometry, 19=aerodynamics, 20=articulatory % 21=source, 22=physiological, 23=rational filter % 24=poles/zeros, 25=glottal flow, 26=excitation model % 27=nose, 28=calibration, 29=area % {1}(3) = subtype % {1}(4) = floating: 1=float, 0=int, -1=structure+ % {1}(5) = datasize in bytes % {1}(6) = framesize in units of datasize % {1}(7) = numframes % {1}(8) = length in bytes of data % {1}(9) = frameduration=1/sample_rate % {1}(10) = datapresent: 0=deleted, 1=present, 2=link % {1}(11) = time offset % {1}(12) = windowsize % {1}(13) = overlap % {1}(14) = lxsync % {2} = processing history % {3} = parameter field % {4} = comment % % FFX cell array containing: % {1} = filename % {2} = (1,4) = [fid byte_order item_row values_read] % {3} = (nitem,5) = one row per item [type subtype length position byteorder] % % Features yet to be implemented: % % (1) If no output parameters are specified, header information will be printed. % (2) following link items % (3) MODE options: % Scaling: 's' Auto scale to make data peak = +-1 % 'r' Raw unscaled data (integer values) % 'q' Scaled to make 0dBm0 be unity mean square % 'p' * Scaled to make +-1 equal full scale % Copyright (C) Mike Brookes 1998 % % Last modified Mon Sep 17 08:48:16 2001 % % VOICEBOX is a MATLAB toolbox for speech processing. Home page is at % 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. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% if nargin<4 mode='p'; else mode = [mode(:).' 'p']; end if nargout==0 if nargin<2 | ty<=0 [yy,fs,hd,ffx]=readsfs(ff,0); fprintf(1,'File: %s\n',ffx{1}); fprintf(1,'Database: %s, Speaker: %s, Date: %s, Token: %s\n',hd{6},hd{7},hd{9},hd{10}); lst=ffx{3}; for it=2:size(lst,1); [yy,fs,hd,ffx]=readsfs(ffx,lst(it,1),lst(it,2),mode,0); nf=hd{1}(7); fd=hd{1}(9); fprintf(1,'%3d.%02d %ss @ %sHz (%d frames)\n',lst(it,1),lst(it,2),sprintsi(nf*fd),sprintsi(1/fd),nf); end end else if ischar(ff) fid=fopen(ff,'rb','b'); if fid == -1 error(sprintf('Can''t open %s for input',ff)); end t=fread(fid,512,'uchar').'; if (t(1:3)~='UC2') error(sprintf('%s is not an SFS file type UC2',filename)) end itemlist = [0 1 0 0 t(512)]; for i=2:200 pos = ftell(fid); [t,n]=fread(fid,512,'uchar'); if (n < 512) break; end mm=pow2(1,8*([0 1 2 3]+(t(512)==0)*[3 1 -1 -3])); itemlist(i,:)=[mm*[t(389:392) t(393:396) t(413:416)] pos t(512)]; if itemlist(i,1)>29 error(sprintf('%d is not a valid SFS item type',itemlist(i,1))) end fseek(fid,itemlist(i,3),'cof'); end ffx={ff; [fid 0 0 0]; itemlist}; else ffx=ff; fid=ffx{2}(1); if fid<0 fid=fopen(ffx{1},'rb',char('b'+(ffx{2}(2)~=0)*('l'-'b'))); end end list=ffx{3}; if nargin<2 ty=0; end if nargin<3 sub=0; end if ty<0 ty=list(1,1); end if sub>0 it = find(list(:,1)==ty & list(:,2)==sub); elseif sub==0 it = min(find(list(:,1)==ty)); else it = max(find(list(:,1)==ty)); end if (isempty(it)) error(sprintf('Cannot find item %d.%d in file: %s',ty,sub,file)); end lit=list(it,:); if ffx{2}(3)~=it ffx{2}(3)=it; ffx{2}(4)=0; end % read the selected item with the correct byte order if lit(5)~=ffx{2}(2) fclose(fid); fid=fopen(ffx{1},'rb',char('b'+(lit(5)~=0)*('l'-'b'))); ffx{2}(1:2)=[fid lit(5)]; if fid == -1 error(sprintf('Can''t open %s for input',ff)); end end fseek(fid,lit(4),'bof'); y=[]; fs=0; if ~lit(1) mb=fread(fid,512,'uchar').'; if nargout>2 mc=[1 4; 9 28; 29 32; 37 56; 57 76; 77 96; 97 116; 117 136; 137 296; 297 304; 305 312; 313 332; 333 412]; hd=cell(14,1); hd{1}=[pow2(1,8*([2 3 0 1]+(mb(512)==0)*[1 -1 1 -1]))*[mb(5:8); mb(33:36)].' mb(512)]; for i=1:13 hd{i+1}=char(zerotrim(mb(mc(i,1):mc(i,2)))); end end else % read the item header hd=cell(4,1); hdr=zeros(1,14); [str,n]=fread(fid,256,'uchar'); if (n<256) error(sprintf('Error reading item %d.%d in file: %s',ty,sub,file)); end hd{2}=char(zerotrim(str')); [str,n]=fread(fid,128,'uchar'); if (n<128) error(sprintf('Error reading item %d.%d in file: %s',ty,sub,file)); end hd{3}=char(zerotrim(str')); hdr(1:8)=fread(fid,8,'long'); hdr(9)=fread(fid,1,'double'); if hdr(9) fs=1/hdr(9); end hdr(10)=fread(fid,1,'long'); hdr(11)=fread(fid,1,'double'); [str,n]=fread(fid,20,'uchar'); if (n<20) error(sprintf('Error reading item %d.%d in file: %s',ty,sub,file)); end hd{4}=char(zerotrim(str')); [hdr(12:14),n]=fread(fid,3,'long'); if (n<3) error(sprintf('Error reading item %d.%d in file: %s',ty,sub,file)); end fseek(fid,44,'cof'); hd{1}=hdr; % now read the actual data if nargin<6 nskip=ffx{2}(4); elseif nskip<0 nskip=ffx{2}(4); end ksamples=hdr(7)-nskip; if nargin>4 if nmax>=0 ksamples=min(nmax,ksamples); end end if ksamples>0 ffx{2}(4)=nskip+ksamples; fsz=hdr(6); if(hdr(10)==1) % data present if(hdr(4)>=0) % non-structured ds=hdr(5); if(hdr(4)>0) if(ds==4) fmt='float'; elseif (ds==8) fmt='double'; else error('error in sfs file'); end else ds mode if(ds==1 & all(mode~='i')) fmt='uchar'; elseif(ds<=2) fmt='short'; fsz=ceil(fsz*ds/2); elseif(ds==4) fmt='long'; else error('error in sfs file'); end fmt end fseek(fid,lit(4)+512+nskip*fsz*ds,'bof'); nd=fsz*ksamples; [y,n]=fread(fid,nd,fmt); if (n<nd) error(sprintf('Error reading item %d.%d in file: %s',ty,sub,file)); end y = reshape(y,fsz,ksamples)'; else if (hdr(2)==5) y = cell(ksamples,3); for ifr=1:nskip lf=fread(fid,1,'uchar'); fseek(fid,lf,'cof'); end for ifr=1:ksamples lf=fread(fid,1,'uchar'); tdat=fread(fid,2,'long'); y(ifr,:)={tdat(1) tdat(2) char(fread(fid,lf-9,'uchar').')}; lf=fread(fid,1,'uchar'); end else error(sprintf('Cannot convert item %d.%d in file: %s',ty,sub,file)); end end end end end if all(mode~='f') fclose(fid); ffx{2}(1)=-1; end end