ished: 20th Dec 2014
Dmitry Sergeevich Zhdanov (1,2) *, Artem Shamilyevich Bureev (1,2), Lyudmila Anatolyevna Khokhlova (1), Anton Ivanovich Seleznev (1,2), Ivan Yuryevich Zemlyakov (1)
(1) Diagnostika + Limited Liability Company, Office 406, Akademichesky Avenue, Tomsk, 634055, Russia.
(2) National Research Tomsk State University, 36 Lenina Avenue, Tomsk, 634050, Russia.
* Corresponding author
Table 1: CORSA recommendations for characteristics of sensors that detect human pulmonary sounds. Parameters Values Frequency range 100 Hz-5 kHz Frequency response Flat in the audio function (FRF) form range of frequencies, irregularity no more than 6 dB Dynamic range > 60 dB Sensitivity It should not change depending on the frequency of signals, direction of sounds or pressure applied onto the sensor Signal/noise ratio > 60 dB (SNR) Direction diagram Omnidirectional Sensor attachment Condenser microphone--elastic belt, glue Piezoelectric microphone, accelerometer--glue Protection against Acoustic sounds: noises and protection against interference vibration, covering with sound- absorbing filling. Electromagnetic interference: twister pair cable or shielded microphone cable. Frequency response Constant and flat in function of the the audio range of amplifier frequencies under study Dynamic range of the > 60 dB amplifier Table 2: Maass and Weber scale. Notation Rated frequency (Hz) Pass-band (Hz) H 35 Up to 70 [C.sub.1] 70 40-180 [C.sub.2] 140 140-400 [B.sub.1] 250 250-650 [B.sub.2] 400 400-1000 A 140 100-400
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|Author:||Zhdanov, Dmitry Sergeevich; Bureev, Artem Shamilyevich; Khokhlova, Lyudmila Anatolyevna; Seleznev, A|
|Publication:||Biology and Medicine|
|Date:||Jul 1, 2014|
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