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 75 for “"Loudness"”.
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Loudness models for rehabilitative audiology
This thesis is devoted towards the loudness perception of normal- and hearing-impaired listeners. It starts with a description of a field-test performed with a wearable DSP prototype hearing aid, which aims at restoring loudness perception in the individual hearing-impaired listener with different …
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Factors influencing equal-loudness level contours
Equal-loudness level contours (ELLCs) are subject of repeated attempts to standardize the results of thorough measurements of several laboratories world-wide. However, numerous findings indicate considerable deviations from the 'old' contours in ISO 226. In addition there are considerable …
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Context Effects in Differential Loudness Judgments
Made available in DSpace on 2014-12-03T23:51:22Z (GMT). No. of bitstreams: 1 6303300.pdf: 4613059 bytes, checksum: d16c3c9603f913dfd7d3ebdf40dfe20c (MD5) Previous issue date: 1962
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Loudness of harmonic and inharmonic two-tone complexes.
Thesis. 1975. M.S.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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An objective measure for the loudness of impulsive noises.
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1972
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Pitch, loudness and frequency selectivity in low-frequency hearing loss
… system. Long-term monitoring of binaural loudness and pitch matches showed that patients had daily fluctuations not present in normal-hearing subjects. The average day-to-day difference was considered as a measure of disease activity. This measure showed that patients with Ménière's …
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Effects of harmonicity and musical training on the loudness of two-tone complexes
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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An Evaluation of the Effects of Selected Psychophysical Methods and Judgmental Procedures Upon Comfortable Loudness Judgments of Connected Speech
Made available in DSpace on 2014-12-10T17:03:09Z (GMT). No. of bitstreams: 1 6503628.pdf: 3102134 bytes, checksum: cecc9e40a0aedf8502455ddc943ec62a (MD5) Previous issue date: 1964
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A framework for semantic and musical hyperlapses
… and playback alignment with a user-chosen song's loudness. Specifically, the hyperlapse slows down during quiet parts of the song to highlight important frames and speeds up during louder segments to de-emphasize less critical content. We also propose strategies to select songs that best …
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The phonetics of metrical prominence and its consequences on segmental phonology
… of the stressed vowel. Second, increasing the loudness of the stressed vowel has side-effects on the realization of stress adjacent stop releases, which result from the subglottal mechanisms used to produce the increase in loudness. These side-effects constitute the small class of …
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On the Application of an Output-based Adaptive, Higher-order Finite Element Method to Sonic Boom Propagation
The reduction of sonic boom loudness to within acceptable limits is a crucial factor for the viability of supersonic aircraft. This thesis presents a computational framework for simulating sonic boom propagation using an output-based adaptive, higher-order finite element method. The research …
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Fine structure in distortion product otoacoustic emissions and auditory perception
… is investigated. Pure tone thresholds and loudness perception of sinusoids show a pronounced fine structure across frequency with level difference of up to 15 dB. These results are relevant for the comparison of DPOAE and psychoacoustical measurements as well as for the basic understanding …
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Relationship between measures related to the cochlear active mechanism and speech reception thresholds in backgrounds with and without spectral and/or temporal fluctuations
… of noise was explored. The perceptual effects of loudness recruitment, a consequence of loss of the active mechanism, were assessed in simulated-loss listeners using a multiband expansion algorithm that models abnormal cochlear linearity. While this algorithm, which derives the expansion …
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Measuring the accuracy of four attributes of sound for conveying changes in a large data set.
… waveform, frequency-sawtooth waveform, loudness and tempo. 24 subjects were given the task of finding the highest data point using sound alone using each of the four sound treatments. Three dependent variables were measured: distance accuracy, numeric accuracy, and time on task. Repeated …
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Padrões rítmicos e marcação de caso em Marubo (Pano)
… is given to pitch, duration and intensity (loudness), searching into the conjugation between phonology and the other linguistic levels. The main word formation processes and case-marking system are described. Semantic/pragmatic case-role coding devices are identified. At the same time there …
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Objective Evaluation of Tracheoesophageal Speech Quality
… objective measures were extracted based on the loudness pattern distortions. Several distance metrics were calculated from the differences between a high quality tracheoesophageal speaker and a corresponding test signal in the perceptual space. Statistical combination of metrics based on the …
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Evaluation and modelling of perceived audio quality in popular music, towards intelligent music production
… Mixes were shown to vary along four dimensions: loudness/dynamics, brightness, bass and stereo width. The variations between individual mix engineers were also studied, indicating a small effect of the mix engineer on mix preference ratings (eta2 = 0.021). Perceptual audio evaluation revealed …
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Toward a social signaling framework : activity and emphasis in speech
… is not the only form of verbal communication. Loudness, pitch, speaking rate, and other non-linguistic speech features are crucial aspects of human spoken interaction. In this thesis, we separate these speech features into two categories -- vocal Activity and vocal Emphasis -- and propose a …
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Negative masking and the units problem in audition
… known as hearing. One aspect of hearing is loudness, to which the field of psychophysics attempts to ascribe a physical correlate intrinsic to the incoming acoustic wave. For over 50 years psychophysicists have attempted to explicitly define the just-noticeable difference (JND) for loudness: …
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The influence of sound envelope shape on instrumental music educators' preferences for concert band crescendos
… (p < .05) for all instruments to increase loudness logarithmically in the shape of a trumpet bell when performing a full band crescendo.
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