how to calculate sound level (spL) audio file (*.wav) ?
27 views (last 30 days)
Show older comments
calculate sound level
0 Comments
Answers (1)
jibrahim
on 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 Comments
Justin
on 29 Oct 2022
Hi, any idea how to obtain the L10, L50 and L90 sound level from an audioread() file?
See Also
Categories
Find more on Audio and Video Data in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!