How to extract acoustic samples containing high decibels

[y,fs]=waveread(‘file.wav’) How can know y content high decibel

Answer 1

[KSSV]

To know high values, use max.

[val,idx] = max(f) ; 
val
f(idx)
y(idx)

To get the values lying beyond certian given values, use:

idx = f>val ; 
f(idx)
y(idx)

[Esraa abd Altoni]

Hi. I found by db=20log10(y/pref.) Indx=max(db) That is right or not Another question What did you mean f?

[KSSV]

f is fs from the line you gave, I was shwoing you how to get a max value from given arrays.

[Esraa abd Altoni]

This solution db=20log10(y/pref.) Indx=max(db) That is right or not

[KSSV]

what is pref?

[Esraa abd Altoni]

Pref=2 x 10-5 Pascal

[KSSV]

If the formula is correct..then what you did is correct.

[Esraa abd Altoni]

I know the formula is corret but I don’t know if this formula calculates the decibels