CONTENTS					vii
CHAPTER								PAGE
3.6	LONGITUDINAL VIBRATION OF BARS								66
3.7	TORSIONAL VIBRATION OF BARS ••••....					••..•	.........	••.	68
3.8	OPEN AND CLOSED PIPES •••...•.........					••...	•..•..	•.•.•	69
IV. DYNAMICAL ANALOGIES
4.1	INTRODUCTION .•.••........				•.••..•••.•.•............			••.	71
4.2	DEFINITIONS		.. • .. • ... • ....		••••••••••....	••....	•.•..•..		73
4.3	ELEMENTS		.............	•••••.•.•.••........			•....	•.....	77
4.4	RESISTANCE .....		•	•.•..........	•...•.•........		••••••••.		78
	A. Electrical Resistance ..............................								78
	B.	Mechanical		Rectilineal	Resistance ..................				78
	C.	Mechanical		Rotational	Resistance ..................				78
	D. Acoustical			Resistance	.............................				79
4.5	INDUCTANCE, MASS, MOMENT OF INERTIA, INERTANCE							.•...	79
	A. Inductance .......................................								79
	B. Mass ............................................								79
	C.	Moment of Inertia ................................							80
	D.	Inertance ........................................							80

4.6ELECTRICAL CAPACITANCE, RECTILINEAL COMPLIANCE, ROTA­

TIONAL COMPLIANCE, ACOUSTICAL CAPACITANCE •••.••..••			81
A. Electrical		Capacitance ............................	81
B.	Rectilineal	Compliance ............................	81
C.	Rotational	Compliance ............................	82
D.	Acoustical	Capacitance ............................	82

4.7REPRESENTATION OF ELECTRICAL, MECHANICAL RECTILINEAL,

	MECHANICAL ROTATIONAL AND ACOUSTICAL ELEMENTS.....						83
V. ACOUSTICAL ELEMENTS
5.1	INTRODUCTION •..••.••.•		...•.•••....	••.....	••••.•..•...		88
5.2	ACOUSTICAL RESISTANCE ....•.•.••••..•.•...				••••.••••••		88
5.3	ACOUSTICAL IMPEDANCE OF A TUBE OF SMALL DIAMETER. .•						88
504	ACOUSTICAL IMPEDANCE OF A NARROW SLIT ...•••.••••...						89
5.5	ACOUSTICAL RESISTANCE OF SILK CLOTH •...				•.••.•••.••••		90
5.6	INERTANCE	...........•••.••••••.••..		••.•••••.•••••....			91
5.7	ACOUSTICAL	CAPACITANCE	.. •........	• ......	• ....	• . • ....	91

5.8MECHANICAL AND ACOUSTICAL IMPEDANCE LOAD UPON A

	VIBRATING PISTON	..•	..••...........	••..	•	........	•...	•.	92
5.9	MECHANICAL AND	ACOUSTICAL		IMPEDANCE		LOAD	UPON	A
	PULSATING SPHERE	•...	•••••..	•.•••..............			••...	•	93
5.10	MECHANICAL AND ACOUSTICAL IMPEDANCE LOAD UPON AN
	OSCILLATING SPHERE .••••.•....			•..••••..•• ....•			•••••••		94
5.11 MECHANICAL AND		ACOUSTICAL IMPEDANCE LOAD UPON A
	PULSATING CYLINDER		.....•....	••..•.••.••••• ...•			••.•.•		95
5.12	MECHANICAL AND ACOUSTICAL IMPEDANCE lOAD UPON A
	VIBRATING STRIP ••••••••••••..•.•......				•....	••••••••..			96

5.13MECHANICAL AND ACOUSTICAL IMPEDANCE LOAD UPON A VIBRATING PISTON IN THE END OF AN INFINITE TUBE •••• 97

5.14MECHANICAL AND ACOUSTICAL IMPEDANCE LOAD UPON A

VIBRATING PISTON IN FREE SPACE ••..••..••.......

••••. 99