findp.m

A MATLAB tool for analysis of Transient Otoacoustic Emission signals

function P = findp(x, lev)

%	P = findp(x, lev)
%
%	findp	finds the pulse rising edges in x.
%
%   in:	x	pulse measurement data
%	lev	trig level (default 0.5*max(x))
%
%  out:	P	vector of rising edge indices

% (c) Heimo Ihalainen & Harri Mustonen 9.3.1989

if nargin<2; lev = 0.5*max(x); end

P = find(diff(x>=lev)==1)+1;