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 20 of 104 for “"reverberation"”.
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Reverberation mapping of Active Galactic Nuclei
… black hole (SMBH) mass estimates using reverberation mapping (RM) technique. RM makes use of the time variability of the broad emission lines from the nearby broad-line region (BLR) to measure their time response or delay (τ) relative to the incident ionizing continuum from the accretion …
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Acoustical reverberation level modeling of underwater riverine system
… From this information, a background and target reverberation levels can be calculated. Using this information, guidelines for sonar site selection and configuration can be established.
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Design and construction of an artificial reverberation producer
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Electrical Engineering, 1951.
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Acoustic Model Adaptation For Reverberation Robust Automatic Speech Recognition
Reverberation is a natural phenomenon observed in enclosed environments. It occurs due to the reflection of the signal from the walls and objects in the room. For humans, reverberation is beneficial as it reinforces sound and also provide the sensation of space. However, for automatic speech …
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Reverberation Mapping of Supermassive Black Holes using Machine Learning
… regions remain inaccessible to direct imaging. Reverberation mapping circumvents this limitation by using time delays between correlated emission at different wavelengths to infer physical size scales. While X-ray reverberation probes the innermost accretion flow, continuum reverberation in the …
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Model study of aircraft noise reverberation in a city street.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1972. M.S.
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Real time bottom reverberation simulation in deep and shallow ocean environments
… the Naval Research Laboratory (NRL) for bottom reverberation, and MATLAB, a model will be developed to incorporate the effects of bottom reverberation into the BELLHOP suite of code. This will be accomplished by using BELLHOP to generate a ray trace and eigen ray file. Then a MATLAB script will …
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Real time bottom reverberation simulation in deep and shallow ocean environments
… the Naval Research Laboratory (NRL) for bottom reverberation, and MATLAB, a model will be developed to incorporate the effects of bottom reverberation into the BELLHOP suite of code. This will be accomplished by using BELLHOP to generate a ray trace and eigen ray file. Then a MATLAB script will …
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Wave theory modeling of three-dimensional seismo-acoustic reverberation in ocean waveguides
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1995.
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Advantages of two-ear listening for speech degraded by noise and reverberation
… in anechoic and reverberant space. Reverberation was expected ·to interfere with the task both directly by degrading consonant identification and indirectly by altering interaural cues and decreasing spatial unmasking. Performance was measured as a function of target-to-masker ratio …
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Effect of reverberation on the directional sensitivity of auditory neurons : peripheral factors
Reverberation poses a challenge for theories of sound localization due to the interaction between the direct sound and the various acoustic reflections. These reflections corrupt binaural cues available to the receiver, resulting in a degradation of directional information available in the acoustic …
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My Blood of the Covenant: Reverberation of the New Covenant in Matthew’s Gospel
When the OT prophets looked ahead to the future redemption, they anticipated a string of redemptive-historical events to be recapitulated in the future. Such recapitulation involves a new deliverance in a new Passover, new exodus, and climaxing in a new covenant. As such, the mention of the …
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Sound Absorption and Sound Power Measurements in Reverberation Chambers Using Energy Density Methods
Measurements in a reverberation chamber use spatially averaged squared pressure to calculate sound absorption, sound power, and other sound measurements. While a reverberation chamber provides an approximation of a diffuse sound field, variations in the measurements introduce uncertainty in …
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Black hole masses and host galaxy properties in distant quasars from reverberation mapping surveys
… (co)-evolution, and AGN feedback mechanisms. Reverberation mapping (RM) is the primary technique to measure BH masses beyond the local Universe (z>0.3). RM measures the delay in variability signatures between the accretion disk and the broad-line region (BLR). BH masses can be estimated by …
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Movements in Binaural Space: Issues in HRTF Interpolation and Reverberation, with applications to Computer Music
… by the above methods is harnessed in a binaural reverberation model, based on an early reflection image model and Feedback Delay Network diffuse field, with accurate interaural coherence. In turn, these flexible environmental processing algorithms are used in the development of a multi-channel …
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Modelling binaural speech intelligibility in spatial noise and reverberation for normal-hearing and hearing-impaired subjects
Sprachverständlichkeit in komplexen Situationen, das sogenannte "Cocktail-Party-Problem", wird stark von der Fähigkeit des Hörers beeinflusst, beide Ohren benutzen zu können. Diese Dissertation stellt die Entwicklung eines Modells der binauralen Sprachverständlichkeit und seine Überprüfung für …
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Using Phoneme Groups to Train Deep Learning Models to Remove Reverberation in Cochlear Implant Stimulus Patterns
… speech in listening environments that contain reverberation and noise. </p><p>One way to address this problem is through time-frequency masking, where the time-frequency representation of reverberant and/or noisy speech is elementwise multiplied by a matrix of gain values, known as a mask, in …
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