SPH 267
HW2 Answers
1. Write a description of the vibration pattern of the massspring system (see figure
below) after the hand pushes the mass 10 cm to the left of the rest position and
then releases it.
The description should be similar to the four phas

SPH 267
HW8 - Answers
1. The figure below shows one cycle of pressure variation for a 100 Hz pure tone (sine wave). For a
sine wave we know that the RMS pressure is: Arms = 0.7071A, so in this case (because A = 1 Pa),
Arms = 0.7071 Pa.
Pressure (Pa)
1
0.5

SPH 267
H OMEWORK A SSIGNMENT 6 - A NSWERS
Fill in the table below by calculating the values of the sound pressure using the sine
wave. Each column of the table is for pressure at a different frequency. It is suggested
that you use radians for the calcul

SPH 267
HW20 answers
1. The picture below shows a closed-open tube that is 40 cm long. Your task is to inject sound pulses into the
closed end at just the right time so that the sound already in the tube is maximally reinforced. However, you can
only inje

SPH 267
HW16 Answers
1. Match the waveforms on the left to the most likely amplitude spectra on the right (i.e., write a number
next to each letter).
Amplitude Spectrum
Pressure
Amplitude
Waveform
0
0.005
0.01
Time (sec.)
0.015
0.02
0
500
1000
1.b
1500
20

SPH 267
SPH 267: ACOUSTICS FOR THE S PEECH AND H EARING S CIENCES
Fall 2014
Review for Exam II
The second exam will be given on 10-27-2014 and will cover all new material since the first exam.
You do not need to memorize the mathematical equations/formula