Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"frequency modulations"”.
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Electric Organ Discharge Frequency Modulations Evoked in Response to Jamming Stimuli in the Weakly Electric Brown Ghost Knifefish (Apteronotus Leptorynchus)
… EOD frequencies, they can actively modulate the frequency of their EODs during social interactions with conspecifics. Gradual frequency shifts occur primarily during the jamming avoidance response (JAR); a behavior in which an animal slowly shifts the frequency of it EOD away from a similar and …
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Properties of naturally produced clear speech at normal rates and implications for intelligibility enhancement
… of F0, and increased modulation depth of low frequency modulations of the intensity envelope. In order to determine which of these acoustical properties of clear/normal speech contribute most to its high intelligibility, signal processing transformations of conversational speech were …
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SIGNAL MODELS, ANALYSIS ALGORITHMS, AND SOFTWARE TOOLS FOR MODAL AUDIO RESYNTHESIS
… in the spectrogram as the amplitude and frequency modulations of beats. This thesis also details the reasons why most signal analysis models fail with beats. Furthermore, the thesis presents the Generalized Mixture Space (GMS) model, which aids in representing sounds with multiple …
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Articulatory feature encoding and sensorimotor training for tactually supplemented speech reception by the hearing-impaired
… derives relative amplitude cues from three frequency-filtered speech bands, preserving the cross-channel timing information required for consonant voicing discriminations, while retaining low-frequency modulations that distinguish voiced and aperiodic signal components. Additionally, a …
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Individual reproductive strategies in the dusky warbler (Phylloscopus fuscatus)
… a relatively high sound amplitude during rapid frequency modulations were consistently preferred by females as copulation partners. Studies of physiological limitations on sound production suggest that such subtle differences in male singing performance can provide an honest reflection of male …
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Modelling and analysis of vibrations in flexible cylinders subjected to internal multiphase and external single-phase flows.
… and parametric resonance. When the slug frequency to structure natural frequency ratio, fs/fn=1, was observed, it generated high amplitudes with an increase of up to 4 times compared to fs/fn=2 ratio at certain flow velocities. Additionally, frequency domain analysis revealed the presence …