caa a22 4500 467915725 CHVBK 20180406152901.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1134/S0020441206030080 doi (NATIONALLICENCE)springer-10.1134/S0020441206030080 Shmelyoff O. Moscow State Academy of Instrument Engineering and Computer Science, Problem Laboratory of Molecular Acoustics, ul. Stromynka 20, 107076, Moscow, Russia aut Infrasonic band in a computer signal generator and spectrum analyzer [Elektronische Daten] [O. Shmelyoff] A computer sound card, modified in order to extend its frequency range to include the infrasound and dc regions and designed for use as a component of a computer-based signal generator and a multifunctional spectrum analyzer, is described. After the modification, the lower frequency limit is 10−3 Hz for the generator, 10−2 for the spectrum analyzer, and zero (dc) for the oscilloscope. Pleiades Publishing, Inc., 2006 07.64.+z nationallicence 43.28.Dm nationallicence 43.58.e nationallicence 43.20.Ye nationallicence 43.75.Yy nationallicence Instruments and Experimental Techniques Nauka/Interperiodica 49/3(2006-05-01), 358-360 0020-4412 49:3<358 2006 49 10786 https://doi.org/10.1134/S0020441206030080 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020441206030080 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Shmelyoff O. Moscow State Academy of Instrument Engineering and Computer Science, Problem Laboratory of Molecular Acoustics, ul. Stromynka 20, 107076, Moscow, Russia aut NATIONALLICENCE 773 0- Instruments and Experimental Techniques Nauka/Interperiodica 49/3(2006-05-01), 358-360 0020-4412 49:3<358 2006 49 10786 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer