Radio and Electronics (DED Philippinen, 66 p.): 3. TRANSDUCERS

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Radio and Electronics (DED Philippinen, 66 p.)

3. TRANSDUCERS

		(introduction...)
		3.1. MICROPHONES
		3.2. LOUDSPEAKERS
		3.3. THE TELEPHON SYSTEM
		3.4. PROBLEM OF FREQUENCY RANGES
		3.5. BANDWIDTH