{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Comm Diss 311-page11

# Comm Diss 311-page11 - 49.(Yes,ofcourse 50.,(No,3 dB...

This preview shows pages 1–2. Sign up to view the full content.

49. It is possible to have a sound that is ‐10 dB SPL. (Yes, of course). 50. If two noises with equal dB SPLs are added, the total is 1 additional dB. (No, 3 dB) 51. The statement “That sound is 40 dB” is meaningless without knowing the reference. (True, there needs to be a reference) 52. The statement “That sound is 40 dB SPL” is meaningless because there is no reference. (False, now there is a reference, e.g., 10^‐12 watts/m2). 53. One example of a reference pressure for dB SPL is .0004 dynes/cm2. (No, .0002 dynes/cm2) 54. The number of dB corresponding to an intensity ratio of 40:1 is approximately 16 dB. (Yes, a factor of 10 is 10 dB and two doublings is another 6, or you can just calculate 10log(40) 55. The number of dB corresponding to a pressure ratio of 40:1 is approximately 32 dB. (True) 56. The intensity ratio corresponding to 60 dB is 100,000,000:1. (No, 1,000,000:1) 57. If everyone sings at the same level, a chorus with 100 singers should make 10 more dB than a chorus with 5 singers. (No 10 log (100/5) is 13 dB).

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}