how to calculate sound level (spL) audio file (*.wav) ?
39 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
calculate sound level
0 Commenti
Risposte (1)
jibrahim
il 4 Mar 2021
Hi ngoc,
You can use splMeter from Audio Toolbox.
% EXAMPLE: Calculate sound pressure level of signal
audFileName = 'FunkyDrums-44p1-stereo-25secs.mp3';
scope = timescope('SampleRate',Fs,...
'TimeSpanSource','property',...
'YLimits',[20 110], 'AxesScaling','auto',...
'ChannelNames',...
{'LAF', 'LAeq', 'LApeak', 'LAmax'});
sm = splMeter('TimeWeighting', 'Fast',...
'FrequencyWeighting', 'A-weighting',...
'SampleRate', Fs, ...
'TimeInterval',2,...
'CalibrationFactor',1);
x = audioread(audFileName);
[LAF,LAeq,LApeak,LAmax] = sm(x(:,1));
scope([LAF,LAeq,LApeak,LAmax])
12 Commenti
Justin
il 29 Ott 2022
Hi, any idea how to obtain the L10, L50 and L90 sound level from an audioread() file?
Vedere anche
Categorie
Scopri di più su Audio and Video Data in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!