How to Calculate Amplitude Using Decibels?

  • Thread starter Thread starter ninjamidget
  • Start date Start date
  • Tags Tags
    Amplitude Decibels
Click For Summary
SUMMARY

This discussion focuses on calculating amplitude using decibel (dB) readings in the context of wave interference. The user is attempting to derive amplitude from dB values using the formulas A = AR/20log10(dB) and A = -20log10(AR) x dB. The reference amplitude provided is 60, but the user expresses confusion regarding the relationship between amplitude and intensity in this context. Clarification on these formulas and their application is necessary for accurate calculations.

PREREQUISITES
  • Understanding of wave interference principles
  • Familiarity with logarithmic calculations
  • Knowledge of decibel scale and its applications
  • Basic grasp of amplitude and intensity concepts
NEXT STEPS
  • Study the relationship between amplitude and intensity in wave physics
  • Learn how to apply logarithmic functions in amplitude calculations
  • Research the correct interpretation of decibel readings in experimental contexts
  • Explore practical examples of amplitude calculations using dB values
USEFUL FOR

Students in physics or engineering fields, audio engineers, and anyone involved in wave analysis or sound measurement will benefit from this discussion.

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?
 

Similar threads

Calculating Decibels & Watts: Looking for Help
  • · Replies 6 ·
Replies
6
Views
1K
Sound intensity - How to deal with decibels?
  • · Replies 17 ·
Replies
17
Views
2K
Undergrad Is there a list of root-power quantities? Or a rule of thumb?
  • · Replies 14 ·
Replies
14
Views
2K
Lagrangian Problem (Find Relation between Amplitude and Momentum)
  • · Replies 6 ·
Replies
6
Views
3K
How to Convert dBV and dBA to dBW?
  • · Replies 7 ·
Replies
7
Views
3K
Attenuation finding distace and amplitude
  • · Replies 25 ·
Replies
25
Views
3K
How do you compare the amplitudes of different frequencies?
  • · Replies 4 ·
Replies
4
Views
2K
How to calculate airplane noise as a function of distance?
  • · Replies 49 ·
2
Replies
49
Views
10K
Calculating Divergent Amplitude in Phi-4 Theory
  • · Replies 1 ·
Replies
1
Views
2K
How to Calculate Amplitude Decrease in Damped Harmonic Motion After 10 Cycles?
  • · Replies 3 ·
Replies
3
Views
842