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Optimizing parameters of speech signals condenser sensor by inner noise of the receiving channel

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Published under licence by IOP Publishing Ltd
, , Citation P A Luchnikov et al 2019 IOP Conf. Ser.: Mater. Sci. Eng. 516 012040 DOI 10.1088/1757-899X/516/1/012040

1757-899X/516/1/012040

Abstract

Noise characteristics of the receiving electroacoustic channel with an electret condenser sensor of speech signal have been considered in the paper. The technique for optimizing the converter' characteristics by inner electrical noise of the signal amplifier as well as the sensor's experimental amplitude-frequency response have been given. It has been found that in order to suppress noise generated by the amplifier it is advantageous to have a Q -factor within 2 4 and resonance frequency ω0 in the range of 0.7 0.85 ω2 in the condenser converter.

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