. Elements of acoustical engineering. Electro-acoustics; Sound. WAVE FILTERS 73 ZiA Z2A ZiE Z2E ZlM Z2M ZlA ZoA 1 MC4CO, 1 - = 0, when coc = 1__ 1 MC AOOc" ; = — 4, when coc = = — 4, when coc = = — 4, when coc = 1 WlCe 1 1-\/ mCu 1 2VmC^ Equations , , , , and show the systems of Fig. are high pass wave filters transmitting currents, velocities or Volume currents of all frequencies lying between the cutoff frequency fc where/c = (Jic/li^, and infinity. F. Band Pass Wave Filters. — Electrical, mechanical and acoustical band pass wave filter
. Elements of acoustical engineering. Electro-acoustics; Sound. WAVE FILTERS 73 ZiA Z2A ZiE Z2E ZlM Z2M ZlA ZoA 1 MC4CO, 1 - = 0, when coc = 1__ 1 MC AOOc" ; = — 4, when coc = = — 4, when coc = = — 4, when coc = 1 WlCe 1 1-\/ mCu 1 2VmC^ Equations , , , , and show the systems of Fig. are high pass wave filters transmitting currents, velocities or Volume currents of all frequencies lying between the cutoff frequency fc where/c = (Jic/li^, and infinity. F. Band Pass Wave Filters. — Electrical, mechanical and acoustical band pass wave filters are shown in Fig. ra=nCH ELECTRICAL MECHANICAL ACOUSTICAL Fig. Band pass wave filters. The impedance of the series arm in the three systems is ze\ = jo^Li Zmi = jo^mi zai = ji^Mi The impedance of the shunt arm in the three systems is ZE2 ^ ' 1 — oi^CsLi jw7n2 Zm2 ZA2 = 1 — (jrCu'tn^ jwM2 1 - co^C^Mz Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Olson, Harry Ferdinand, 1901-. New York, D. Van Nostrand company, inc.
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