PabRod

clap = audioread('clap.wav');
fs = 96e3;      % sampling frequency
N = 40;         % steps
ssize = 0.15;   % step size
delay = ssize * 2 / 340;
samples = round(delay * fs);
stairs = zeros(samples * N + length(clap) + N, N);
for i = 1:N
    samples = samples + 1;
    indexes = (i-1)*samples+1 : length(clap)+(i-1)*samples;