% Play the sound (MATLAB 7.1 compatible) sound(audio_signal, fs);
for i = 1:length(melody) note_idx = melody(i); freq = notes(note_idx); matlab 7.1
% Generate the piece fprintf('Generating musical piece...\n'); % Play the sound (MATLAB 7
% Parameters fs = 8192; % Sampling frequency (Hz) duration = 0.5; % Duration of each note (seconds) tempo = 120; % Beats per minute freq = notes(note_idx)
% Add short silence between notes (optional) silence = zeros(1, round(0.02 * fs));
% Create sine wave with envelope (attack + decay) envelope = exp(-3 * t / duration); % Simple decay envelope note_signal = sin(2 * pi * freq * t) .* envelope;
% Plot the waveform figure; plot((0:length(audio_signal)-1)/fs, audio_signal); xlabel('Time (seconds)'); ylabel('Amplitude'); title('Generated Musical Piece - Waveform'); grid on; xlim([0, length(audio_signal)/fs]);