How to Calculate Amplitude Using Decibels?

  • Thread starter Thread starter ninjamidget
  • Start date Start date
  • Tags Tags
    Amplitude Decibels
AI Thread Summary
To calculate amplitude using decibels, the reference amplitude is essential, with a common reference being 60 dB. The formulas provided, A = AR/20log10 x dB and A = -20log10/AR x dB, are intended to relate amplitude to decibel readings. The user expresses confusion about whether the reference of 60 pertains to amplitude or intensity and seeks clarification on calculating the resultant wave's amplitude. Understanding the distinction between amplitude and intensity in the context of decibels is crucial for accurate calculations. Assistance is requested to navigate this complex task effectively.
ninjamidget
Messages
2
Reaction score
0
I have got an assignment in which i need to compare wave interference, so i am going to use decibels readings which i had gotten from experiments and the reference amplitude which is 60 to calculate this very very confusing task.



i have gotten these formulas derived from which i derived from the original formula
A= AR/20log10 x dB
A= -20log10/AR x Db



i am WAY off and so confused with this, would really require help
 
Physics news on Phys.org
Any help would be greatly appreciated
 
I do not understand what the task is. Do you know the dB reading with respect to a reference -is that "60" amplitude or intensity? -and want to find the amplitude of the resultant wave?
 
Thread 'Help with Time-Independent Perturbation Theory "Good" States Proof'

Thread 'Help with Time-Independent Perturbation Theory "Good" States Proof'

(Disclaimer: this is not a HW question. I am self-studying, and this felt like the type of question I've seen in this forum. If there is somewhere better for me to share this doubt, please let me know and I'll transfer it right away.) I am currently reviewing Chapter 7 of Introduction to QM by Griffiths. I have been stuck for an hour or so trying to understand the last paragraph of this proof (pls check the attached file). It claims that we can express Ψ_{γ}(0) as a linear combination of...
View full post »

Similar threads

Calculating Decibels & Watts: Looking for Help
Replies
6
Views
1K
Sound intensity - How to deal with decibels?
Replies
17
Views
2K
I Is there a list of root-power quantities? Or a rule of thumb?
Replies
14
Views
2K
Lagrangian Problem (Find Relation between Amplitude and Momentum)
Replies
6
Views
3K
What Is the Decibel Level After Removing 69 Pigs?
Replies
1
Views
3K
How to Convert dBV and dBA to dBW?
Replies
7
Views
3K
Attenuation finding distace and amplitude
Replies
25
Views
3K
How do you compare the amplitudes of different frequencies?
Replies
4
Views
2K
How to calculate airplane noise as a function of distance?
Replies
49
Views
9K
Mysteries of Geometric Optics In MTW Chapter 22
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top