calculate SPL-Third octave using poctave function

I want to calculate the sound pressure level third ooctave using poctave function

I used poctave function to convert pressure data (p) (time,pressure) to 1/3 octave spectrum

[P3rd, cf] = poctave(p,fs,'FrequencyLimits',[df,fs/2],'BandsPerOctave',3);

In order to calculate the SPL-1/3 Octave (sploct)

sploct        = 10*log10(P3rd/pref^2);

Is the equation for calculating SPL-1/3 octave is correct or not?

[Urmila Rajpurohith]

The solution provided here (The question where you commented)solved your issue?

Answer 1

[zein]

%using filtbank dunction (download it from lib.)
[splfiltb,fcfiltb] = filtbank(p,fs,[],'extended');

%using poctave fun
pref=2e-5;
[P3rd, fc1] = poctave(p,fs,'FrequencyLimits',[3,fs/2],'BandsPerOctave',3);
sploct1       
= 10*log10(P3rd/pref^2);

I have used both these two methods (filtbank and poctave fun) and they showed the same resultsm check them

[ngoc quy hoang ngoc quy]

hello zein, What is the input of p in function poctave??

[zein]

p is the pressure signal

[ngoc quy hoang ngoc quy]

can you send me these file which you have tested, pls?

[ngoc quy hoang ngoc quy]

you can send me to Email: [e-mail]

thank you verry much

[zein]

send ??

Answer 2

[ngoc quy hoang ngoc quy]

do you have the answer? I am also interested in this question