Formulas

Question 1

What is the formula for wavelength?

Answer 1

λ = c/f

Question 2

What is the formula for a single sinusoid? What does each letter mean?

Answer 2

(Si) = asin(bx+c)

a= amplitude
b= frequency
c= phase

Question 3

Give the two formulas for intensity

Answer 3

I = P^2
I = 1/d^2 *Isource

Question 4

What is the formula for relative intensity?

Answer 4

10 log10 (Ix/I0) dB

Question 5

What is the formula for relative pressure?

Answer 5

20 log10 (Px/P0) dB

Question 6

What is the formula for determining the resonance frequency of a vocal tract?

Answer 6

Fn = (2n-1) c/4L

Question 7

What is the formula for resonance frequency according to the Helmholtz model?

Answer 7

F = c/2π x √A/LV

Question 8

What is the formula for reynolds number? What are the other formulas you need to get there?

Answer 8

Re = (d x ū)/.14

Vv = A x ū
A = πR^2 
d = 2R

Question 9

What is the formula to determine the fold over frequency?

Answer 9

(Ff) = SR – Frequency above NF (Fo)

Question 10

What is the formula to determine the signal to noise ratio?

Answer 10

S/N ratio ≈ (6.02 x Q) + 1.76 (dB)

Question 11

What is the formula for determining the frequency resolution of a window?

Answer 11

(Fres) = sampling rate (SR) / window size (in # of samples)

Question 12

What is the formula for frequency?

Answer 12

F = 1/T

Question 13

What is the formula for period?

Answer 13

T = 1/F