1 Ocak 2020 Dergi makalesi Açık Erişim

Kaya, Gulhan Ustabas; Sarac, Zehra

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    <subfield code="a">Noise analysis for optical voice recorder based on off-axis digital holography</subfield>
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    <subfield code="a">In this paper, the aim was to analyze in terms of noise the results of the methods used in reconstruction process of sound hologram obtained by optical voice recorder based on off-axis digital holography. In such a system, the sound holograms are captured by using human voice "a, e, i," which is recorded in MP3 recorder and given to the medium by a loudspeaker. These sound holograms are obtained by using high-speed camera with the rate of 2000 frames per second and reconstructed by the commonly used methods (Fourier transform, Fresnel transform, and one-dimensional continuous wavelet transform methods) in the literature. In this study, the purpose is to compare and analyze the results obtained with these methods in terms of noise. This analysis is performed by giving the results obtained by the reconstruction process and by calculating the signal-to-noise ratio values with results obtained from the system.</subfield>
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    <subfield code="u">Istanbul Medeniyet Univ, Dept Elect &amp; Elect Engn, Fac Engn, TR-34700 Istanbul, Turkey</subfield>
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