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== Files == | == Files == | ||
| − | [[Media: jpbackwards_ECE301Fall2008mboutin | + | [[Media: jpbackwards_ECE301Fall2008mboutin.wav]] |
| − | + | ||
| + | This file is at the original sampling frequency. | ||
| + | |||
| + | [[Media: jpbackwards70sampling_ECE301Fall2008mboutin.wav]] | ||
| + | |||
| + | This is at 70% the original sampling frequency. The message is a bit more clear. | ||
| + | |||
| + | == Message == | ||
| + | The message is a bit difficult to make out, but I believe he is saying I took my life. | ||
== Matlab Code == | == Matlab Code == | ||
| + | <pre> | ||
| + | %Joseph Mazzei ECE 301 HW1 Problem 2 | ||
| + | %Clear Console and all Variables | ||
| + | clc | ||
| + | clear all | ||
| + | |||
| + | %Get a vector of the wav data and the sampling frequency | ||
| + | [foward,fs] = wavread('Jpforward.wav'); | ||
| + | %Play the wav forwards | ||
| + | sound(foward,fs); | ||
| + | %Reverse the wav data vector | ||
| + | backward = flipud(foward); | ||
| + | %Write a wav of the backwards data at the original sampling frquency | ||
| + | wavwrite(backward,fs,'jpbackwards.wav'); | ||
| + | %Play the wav backwards at original sampling frequency. | ||
| + | sound(backward,fs); | ||
| + | %Write a wav of the backwards data at 70% the original sampling frquency | ||
| + | wavwrite(backward,fs*.7,'jpbackwards70psampling.wav'); | ||
| + | %Play the backwards file at 70% original sampling frequency. | ||
| + | sound(backward,fs*.70); | ||
| + | </pre> | ||
Latest revision as of 04:00, 5 September 2008
Files
Media: jpbackwards_ECE301Fall2008mboutin.wav
This file is at the original sampling frequency.
Media: jpbackwards70sampling_ECE301Fall2008mboutin.wav
This is at 70% the original sampling frequency. The message is a bit more clear.
Message
The message is a bit difficult to make out, but I believe he is saying I took my life.
Matlab Code
%Joseph Mazzei ECE 301 HW1 Problem 2
%Clear Console and all Variables
clc
clear all
%Get a vector of the wav data and the sampling frequency
[foward,fs] = wavread('Jpforward.wav');
%Play the wav forwards
sound(foward,fs);
%Reverse the wav data vector
backward = flipud(foward);
%Write a wav of the backwards data at the original sampling frquency
wavwrite(backward,fs,'jpbackwards.wav');
%Play the wav backwards at original sampling frequency.
sound(backward,fs);
%Write a wav of the backwards data at 70% the original sampling frquency
wavwrite(backward,fs*.7,'jpbackwards70psampling.wav');
%Play the backwards file at 70% original sampling frequency.
sound(backward,fs*.70);
