PeakSeek

Find peaks in vector

Specify a vecter, a minimum peak separation, and a minimum peak height, and this function will find the peaks.. about 250 times faster than findpeaks would!
try:

t=linspace(0,1,10001);
x=sin(2*pi*20*t)+0.2*sin(2*pi*113*t)+.2*randn(size(t));
p=peakseek(x,10000,1);