Thread Subject: Draw cursorline on axes when mouse click on speech signal

I've created a GUI which loads and displays my speech signal in the GUI axes. Now I want to create a cursor line on the y-axis where I click and from the position that I've clicked, the program takes a 10-msec window of the speech segment immediately after the cursor line, and performs LPC analysis.

Is there a way to show cursor lines when u click somewhere and take a 10ms window of e speech segment immediately after the cursor line, and perform LPC analysis?

"Wee Keong " <thangwk@hotmail.com> wrote in message <gt5smt$7k$1@fred.mathworks.com>...
> I've created a GUI which loads and displays my speech signal in the GUI axes. Now I want to create a cursor line on the y-axis where I click and from the position that I've clicked, the program takes a 10-msec window of the speech segment immediately after the cursor line, and performs LPC analysis.
>
> Is there a way to show cursor lines when u click somewhere and take a 10ms window of e speech segment immediately after the cursor line, and perform LPC analysis?

do something like this:

waitforbuttonpress;
xy=get(gca,'currentpoint');

xy will then contain the coordinates of the point clicked by the user. You can then draw a cursor line, and set a 10 [ms] window easily!

"Wee Keong " <thangwk@hotmail.com> wrote in message <gt5smt$7k$1@fred.mathworks.com>...
> I've created a GUI which loads and displays my speech signal in the GUI axes. Now I want to create a cursor line on the y-axis where I click and from the position that I've clicked, the program takes a 10-msec window of the speech segment immediately after the cursor line, and performs LPC analysis.
>
> Is there a way to show cursor lines when u click somewhere and take a 10ms window of e speech segment immediately after the cursor line, and perform LPC analysis?

You can just plot a vertical or horizontal line, e.g. here's code to plot a vertical line
----------
[x,y]=ginput(1); % get a click
xlim = get(gca,'xlim');
ylim = get(gca,'ylim');
plot([x x], ylim); % vertical line
----------

By the way, here is a MATLAB toolbox that does almost exactly what you want (get a frame of speech, draw cursor lines, do a LPC analysis, adjust LPC filter order, etc.).
  http://www.cnbc.cmu.edu/~vallabha/lpctools/index.htm

Gautam