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Fs = 44100; % Sampling Frequency in Hz
 
  
y = wavread('armstrong'); % Reads the armstrong.wav file specificed by a string file
 
 
wavplay(y,Fs); % Plays the armstrong.wav file at the specified sampling frequency
 
 
 
x = wavread('armstrongforward'); % Reads the armstrongforward.wav file specificed by a string file
 
 
wavplay(x,Fs); % Plays the armstrongforward.wav file at the specified sampling frequency
 
 
 
N = length(x); % Returns the length of vector x. 
 
 
k = 1:1:N; % Creates an array
 
 
minus_k = N+1 - k; % Reverses the created array
 
 
z = x(minus_k);
 
 
wavplay(z,Fs); % Plays the reversal of armstrongforward.wav file
 
 
 
w = zeros(1,2.*N);
 
 
w(1:2:2.*N) = z(1:N);
 
 
wavplay(w,Fs); % Plays the slowed & reversed version of armstrongforward.wav file
 

Latest revision as of 21:49, 22 July 2008

Alumni Liaison

Abstract algebra continues the conceptual developments of linear algebra, on an even grander scale.

Dr. Paul Garrett