vtpchg.m

这是一个用于语音信号处理的工具箱

% Function : change the voicetype classification for the GCI display using the mouse.
%     vtpchg will chnage the voicetype from voiced to unvoiced, or vice versa.
%
%     vtpchg.m is a call_function executed by "chg_vtp" on figure(Vchek_f).

 %----------------------------------------% 
 % change the voicetype classification    %
 %----------------------------------------%
  figure(Vchek_f);

   % select frame to change
  [xx yy]=ginput(1);
  [dummy,choise]=min(abs( (xx+m_len/2)-m_len*idx ));
    
  idx=round(left/m_len)+1:round(right/m_len);

  if vctyp0( idx(choise) )==0
      vctyp0( idx(choise) )=1;
      stg=['U->V'];
  else
      vctyp0( idx(choise) )=0;
      stg=['V->U'];
  end

  % plot the changed voicetype

  plot(left:right,signal(left:right),'b',left+m_len/2:m_len:right,8000*vctyp0(idx));

  for kf=idx
     if vctyp0(kf)
        text(m_len*kf-m_len/2,9000,'V');
     else
        text(m_len*kf-m_len/2,9000,'U');
     end
  end

  text(m_len*idx(choise)-m_len/2,7500,stg);
  axis([left right -10000 10000])
  grid;

  %----------------------------------%
  % plot the voicetype for reference %
  %----------------------------------%

  figure(Vcontour_f);
  plot(1:lens,signal,'b',1+m_len/2:m_len:lens,10000*vctyp0,'r:');
  title('Voicetype classification along the speech signal (dash line: voicetype)');