×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

average of energy per octave

average of energy per octave

average of energy per octave

(OP)
Hi there,

I want to calculate the average of energy per octave band (my data are energy levels per octave bands of different time slices I want to get the average of several time slices), the problem is:

levels:
e.g.
5    12    13    14    15    13    5
av=11.00000 =10.41db

levels in db:
6.99    10.79    11.14    11.46    11.76    11.14    6.99
average=10.038db

so what's the correct way to do that?


 

RE: average of energy per octave

Convert each dB value into voltage or engineering units depending upon the dB-Reference. Then do a math average (sum of values divided by the #values). Then convert the math average back into dB units.

Walt

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources