Matlab: 7.1

% Musical Piece Generator for MATLAB 7.1 % Creates a simple melodic phrase and plays it clear all; close all; clc;

% Optional: save to WAV file (if needed) % wavwrite(audio_signal, fs, 16, 'my_musical_piece.wav'); % fprintf('Saved to my_musical_piece.wav\n');

I notice "matlab 7.1" and "come up with a piece" – I think you might be asking me to generate a piece of (version 7.1 compatible) that creates a musical or algorithmic composition?

fprintf('Note %d: %s (%.2f Hz)\n', i, note_names{note_idx}, freq); end matlab 7.1

% Melody: sequence of note indices (1-8) % Simple melody pattern: C - D - E - C - E - D - C melody = [1, 2, 3, 1, 3, 2, 1, 5, 5, 6, 6, 5, 4, 3, 2, 1];

% Add short silence between notes (optional) silence = zeros(1, round(0.02 * fs));

% 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]); % Musical Piece Generator for MATLAB 7

% Create sine wave with envelope (attack + decay) envelope = exp(-3 * t / duration); % Simple decay envelope note_signal = sin(2 * pi * freq * t) .* envelope;

for i = 1:length(melody) note_idx = melody(i); freq = notes(note_idx);

Since MATLAB 7.1 (R14SP3, from 2005) has limited audio and synthesis capabilities compared to modern versions, here's a piece of code that generates a simple and plays it: % fprintf('Saved to my_musical_piece.wav\n')

% Time vector for one note t = 0:1/fs:duration-1/fs;

% Normalize to prevent clipping audio_signal = audio_signal / max(abs(audio_signal));