(New page: == MATLAB Code == <pre> % Travis Safford % September 5, 2008 % % Homework 1.2 - This file is supposed to reverse and slow down a Judas Priest song % Begin by clearing the console and all ...) |
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Length_Array=size(data); | Length_Array=size(data); | ||
Length=Length_Array(1); | Length=Length_Array(1); | ||
| − | + | data_reverse=zeros(Length,1); | |
for j=Length:-1:1 | for j=Length:-1:1 | ||
| − | + | data_reverse(Length-j+1,1)=data(j); | |
end | end | ||
| − | + | wavplay(data_reverse,sample); | |
| − | wavplay( | + | wavwrite(data_reverse,sample,rate,'jpreverse.wav'); |
| − | wavwrite( | + | |
%To slow the original data, we can just write out the reversed data with | %To slow the original data, we can just write out the reversed data with | ||
% a fraction of the correct sampling rate. | % a fraction of the correct sampling rate. | ||
| − | + | wavwrite(reversedata,sample/1.5,rate,'jpreverseslow.wav'); | |
| − | wavwrite(reversedata, | + | wavplay(reversedata,sample/1.5); |
| − | wavplay(reversedata, | + | |
</pre> | </pre> | ||
Revision as of 16:46, 4 September 2008
MATLAB Code
% Travis Safford
% September 5, 2008
%
% Homework 1.2 - This file is supposed to reverse and slow down a Judas Priest song
% Begin by clearing the console and all saved memory.
clear;
clc;
%Open the wave file and get its length, sample size, and sampling rate
%Make sure the file is in your present working directory for matlab
[data,sample,rate]=wavread('jpforward.wav');
%Play the file once at normal speed
wavplay(data,sample);
%Reverses the data, plays it, then saves it to a file
Length_Array=size(data);
Length=Length_Array(1);
data_reverse=zeros(Length,1);
for j=Length:-1:1
data_reverse(Length-j+1,1)=data(j);
end
wavplay(data_reverse,sample);
wavwrite(data_reverse,sample,rate,'jpreverse.wav');
%To slow the original data, we can just write out the reversed data with
% a fraction of the correct sampling rate.
wavwrite(reversedata,sample/1.5,rate,'jpreverseslow.wav');
wavplay(reversedata,sample/1.5);
