Sound Intensity Level

  • Thread starter Jtappan
  • Start date
  • #1
96
0

Homework Statement



During a rehearsal, all eight members of the first violin section of an orchestra play a very soft passage. The sound intensity level at a certain point in the concert hall is 32.0 dB. What is the sound intensity level at the same point if only one of the violinists plays the same passage?
[Hint: When playing together, the violins are incoherent sources of sound.]
____ dB

Homework Equations



??????

The Attempt at a Solution



Shouldnt this answer be around 40 something? If not any help would be awesome
 

Answers and Replies

  • #2
mezarashi
Homework Helper
650
0
Look up the equation for sound pressure addition for incoherent sources. The total pressure is the sum of the squares of the individual sources.

You can convert from the linear scale to dB scale using the good old "10 log x".
 

Related Threads on Sound Intensity Level

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
10
Views
3K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
1
Views
10K
Replies
2
Views
22K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
3
Views
19K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
10
Views
18K
Top