Peak to Peak distance

I have an m file like this

clear;

figure;

grid on;

hold on;

Fs = 11000; % sampling rate in Hz

dt = 5;   % duration in seconds

y = wavrecord(dt*Fs, Fs, 'double');

ly = length(y);

time = (1/Fs)*ly;

%y1 = fft(y);

t = linspace(0,time,length(y));

%axis([0 5 500 500]);

%freqz(Y);

plot(t,y);

I want to determine sharp peaks as in fft but fft didn't give what i want. And also i want to determine the distance between peaks. How can i do it ? Please help me.

[Walter Roberson]

What difference did you observe between the fft and the information you were looking for?

Are you looking for peak frequencies, or are you looking for peak amplitudes (loudest points) ?