The given equation is
y = 0.40 sin (440 t + 0.61)
Comparing it with the equation of S.H.M
y = a sin (ωt + ϕ0)
We have (i) amplitude, a = 0.40 m
(ii) Angular frequency, ω = 440 Hz
(iii) Frequency of oscillations
v = ω/2π = {440}/{2 x 22/7} = 70 Hz
(iv) Time period of oscillations,
T = 1/v = 1/70 = 0.0143 s.
(v) Initial phase angle, ϕ = 0.61 rad