How to write audio without data clipping?
5 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Su Latt Sandi
le 15 Fév 2018
Commenté : Pham Xuan Trung
le 9 Juil 2020
Hello,
I want to write audio without data clipping. I tried by multiplying audio coefficients with float number (e.g. 0.1, 0.5, 0.001, etc.) to get the value within the range of -1 to +1. But this error are still occurred Warning: Data clipped when writing file. In audiowrite>clipInputData In audiowrite . I would be grateful if someone help me in this error.
0 commentaires
Réponse acceptée
Star Strider
le 15 Fév 2018
Try this to normalise the signals before you write them:
t = 0:99; % Time Vector (For Plotting)
V1 = randi([-9 9], 100, 1); % Create Out-Of-Range Data
V2 = V1 / max(abs(V1)); % Normalise To ±1
figure(1)
plot(t, V1, t, V2)
hold on
plot(xlim, [1 1], '--k')
plot(xlim, [-1 -1], '--k')
hold off
grid
legend('Original', 'Normalised', '±1')
The code simply divides all the data by the maximum of the absolute value (so it is not necessary to test both the positive and negative values). The plot illustrates the input and output of the normalisation.
Experiment to get the result you want.
3 commentaires
Star Strider
le 16 Fév 2018
My pleasure.
If my Answer helps you solve your problem, please Accept it!
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Audio I/O and Waveform Generation dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!