clear all;
clc;
%Part 1: Smoke on the Water
%%%%%%%% Normal Rate %%%%%%%%
%Tempo
bpm = 112;
bps = 112/60;
spb = 1/bps;
%Sampling Rate
delta = 0.00005;
%Note Length
H = (0:delta:2*spb);
Q = (0:delta:spb);
E = (0:delta:0.5*spb);
DQ = (0:delta:1.5*spb);
%Notes
G = sin(2*pi*440*(2^(-2/12))*Q);
Bflat = sin(2*pi*440*(2^(1/12))*Q);
Cdq = sin(2*pi*440*(2^(3/12))*DQ);
Ch = sin(2*pi*440*(2^(3/12))*H);
Dflat = sin(2*pi*440*(2^(4/12))*E);
Song = [G, Bflat, Cdq, G, Bflat, Dflat, Ch, G, Bflat, Cdq, Bflat, G];
%Rocking Out!
sound(Song, 1/delta);
wavwrite(Song, 1/delta, 'ECE301_HW1_1_A');
%%%%%%%% Faster Now! %%%%%%%%
H2 = H/2;
Q2 = Q/2;
E2 = E/2;
DQ2 = DQ/2;
%Notes
G = sin(2*pi*440*(2^(-2/12))*Q2);
Bflat = sin(2*pi*440*(2^(1/12))*Q2);
Cdq = sin(2*pi*440*(2^(3/12))*DQ2);
Ch = sin(2*pi*440*(2^(3/12))*H2);
Dflat = sin(2*pi*440*(2^(4/12))*E2);
Song = [G, Bflat, Cdq, G, Bflat, Dflat, Ch, G, Bflat, Cdq, Bflat, G];
%Hit It!
sound(Song, 2/delta);
wavwrite(Song, 2/delta, 'ECE301_HW1_1_B');
%%%%%%%% Nail those high notes! %%%%%%%%
G = sin(2*pi*440*(2^(-2/12))*Q);
Bflat = sin(2*pi*440*(2^(1/12))*Q);
Cdq = sin(2*pi*440*(2^(3/12))*DQ);
Ch = sin(2*pi*440*(2^(3/12))*H);
Dflat = sin(2*pi*440*(2^(4/12))*E);
Song = [G, Bflat, Cdq, G, Bflat, Dflat, Ch, G, Bflat, Cdq, Bflat, G];
%%%%%%%% !m!_(>_<)_!m! %%%%%%%%
sound(Song, 2/delta);
wavwrite(Song, 2/delta, 'ECE301_HW1_1_C');
% Part 2: Hidden Messages in Beatles song
%% Read in and play the original file
[Song,Fs] = wavread('Beatles.wav');
sound(Song,Fs);
%% Reverse the song, play the result, and write to file
Reverse = flipud(Song);
sound(Reverse,Fs);
wavwrite(Reverse,Fs,'Beatles_reverse')
The original file sounds like "Number 9" being said repeatedly, while the reversed file sounds to me like "Let me on, Desmond" said repeatedly
